• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a method for manufacturing a lighting base (1) for pyrotechnic systems, it is proposed that a steel base body (2) be work hardened to form structural transformations by inserting a through hole (3) in the steel base body (2), in the through hole (3) a first metal pin (4 and a glass material (5) insulating the first metal pin (4) from the through hole (3), the enamel assembly of steel base body (2), glass material (5) and first metal pin (4) thus formed being heated to a glass wetting temperature, and wherein a melting time period of heating the fusing assembly is greater than a glass melting time period and less than a fabric back conversion period.
    公开号:AT513505A4
    申请号:T11592012
    申请日:2012-10-25
    公开日:2014-05-15
    发明作者:Christian Bauer；Dieter Dipl Ing Thumfart
    申请人:Electrovac Hacht & Huber Gmbh；
    IPC主号:
    专利说明:

    1 33773 / lh
    The invention relates to a method for producing a lighting socket for pyrotechnic systems according to claim 1.
    In airbags gas generators are included, which produce the gas required to inflate the airbag. In this case, the ignition of a fire sentence is usually provided, for which purpose a corresponding lighter is provided. Such lighters have a cylindrical body through which a conductive contact is electrically isolated. When triggering the fire sentence while the lighter is charged with the full pressure, which is caused by the fire, and which ultimately drives the inflator and inflates the airbag. As a result, such lighters are exposed to a considerable mechanical short-term load, similar to a blow, and special demands are placed on them.
    Such lighters have a firing base, which as a rule has a so-called metal / glass leadthrough, which, as has been shown, represents a part of the entire lighter which limits the overall load capacity of such a firing base. If the lighter is loaded until it fails, the glass part is pressed out of a base body, which jeopardizes the further safe functioning of the entire pyrotechnic system.
    The object of the invention is therefore to provide a method of the type mentioned, with which the mentioned disadvantages can be avoided, and with which a lighter, in particular a lighter socket, can be produced, with which the safe function of pyrotechnic systems can be supported, which supports a has high total load and a low production and material costs.
    This is achieved by the features of claim 1 according to the invention.
    As a result, a lighter socket can be produced, which has a higher load capacity than conventional sock bases. This supports the safe operation of pyrotechnic systems. As a result, a lighter socket can be produced, which has a significantly lower material expenditure at a same load capacity as 2 33773 / lh conventional socking base. Such a manufactured socking base also has a lower energy consumption for its production. By the objective measures while the Auspresskraft of such a glass material and the Pinauszugskraft be increased, or can be created a lighter base, which is able to meet the same requirements with significantly smaller dimensions, as before, significantly larger Anzündersockel.
    The subject invention further relates to a firing socket for pyrotechnic systems according to the preamble of claim 12.
    The object of the invention is therefore to provide a Anzündersockel the aforementioned type, with which the aforementioned disadvantages can be avoided, and which has a high overall load and a low manufacturing and material costs.
    This is achieved by the features of claim 12 according to the invention.
    Thereby, the above-mentioned advantageous effects can be achieved.
    The subclaims relate to further advantageous embodiments of the invention.
    It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim.
    The invention will be described in more detail with reference to the accompanying drawing, in which a merely preferred embodiment is shown by way of example. The single figure shows a preferred embodiment of an objective lighter.
    The sole FIGURE shows a firing base 1 for pyrotechnic systems. Such Anzündersockel 1 are part of lighters, which are provided in particular for so-called. Airbags in motor vehicles and are also referred to as airbag detonator. In addition, these can also be used in automatically inflating lifejackets and lifeboats, emergency slides for aircraft, 3 33773 / lh
    Belt tensioners and / or battery separation systems. Such lighters are intended primarily for applications where, after ignition of a pyrotechnic system, they must withstand a pressure built up by this system for some time without being destroyed themselves, unlike detonators for mines or bombs.
    The lighter base 1 has a steel body 2, which will be described in more detail below. In the steel base body 2, a through hole 3 is arranged. In this, a first metal pin 4 is arranged, which protrudes on a first side 8 of the steel base body 2 clearly above this and forms an electrical connection pin or pin. The first metal pin 4 is held by an annularly arranged around this glass material 5 in the through hole 3 and electrically insulated by the glass material 5, even with respect to the steel base body 2. The glass material 5 is fused to the first metal pin 4 and an inner surface of the through hole 3. A part of the first metal pin 4 protrudes as Zündkontaktstelle on the second side 9 of the steel body 2 from this, or closes, as shown in the single figure, flush with the second side 9 of the steel base body, which side are also referred to as the front side or end face can, from. On the first side 8 of the steel base body 2, a second metal pin 6 is preferably further conductively attached. Preferably, the second metal pin 6 is soldered to the first side or front side. The second metal pin 6 also forms an electrical connection pin or pin. Preferably, the ends of the first and the second metal pin 8, 9 are at least partially coated with a noble metal, in particular gold or rhodium. Such a steel base body 2 has typical outside dimensions in the single-digit millimeter range.
    In addition to the parts of the firing base 1 shown in the figure, a firing agent or an explosive is usually arranged directly on the second end face 9 on a complete lighter. The complete lighter may have other features and assemblies not described.
    In the following, a method is described for producing the igniter base, wherein: • a steel base body 2 is work-hardened to form structural transformations, • a through-opening 3 is introduced in the steel base body 2, • a first metal pin 4 in the through-hole 3 and one, the first
    Metal pin 4 opposite the passage opening 3 insulating, glass material 5 are arranged, wherein the thus formed Einschmelzanordnung steel base 2, glass material 5 and the first metal pin 4 is heated to a glass wetting temperature, and wherein a melting time of the heating of the meltdown is greater a glass melting time and less a Gefuggerückwandwanddauerzeitdauer ,
    The first two mentioned method steps can be carried out in different orders - as will be described below with reference to preferred embodiment variants.
    Inventive Anzündersockel 1 have a steel body 2, therefore, a body or comprising steel on. In particular, highly alloyed stainless steel or stainless steel steels are provided with low carbon content, in particular between 0.01% and 0.7%, and further 10% to 20% chromium and 5% to 15% nickel, or also unalloyed quality steels with a carbon content less than or equal to 0.3%, which quality steels - according to a preferred embodiment - are nickel-plated after a punching operation for the purpose of corrosion protection. In addition, the steel in question may contain other alloying constituents.
    The steel base body 2 generally has a cylindrical basic shape, but may also have other geometric shapes. In particular, rotationally symmetrical shapes are preferably provided.
    The steel base body 2 is work hardened, which - as described below can be done at different steps of the subject method. For this purpose, the relevant steel base body 2 is preferably plastically compressed, for example in a press, which leads to structural changes or microstructural changes in the steel base body 2, which microstructural changes lead to a clearly ascertainable increase in strength of the steel base body 2. Above all, it comes to so-called. Displacements and further to the area-wise training of so-called Versetzungsmartensit. In this case, a reshaping of the lattice structure within the structure of austenite to martensite takes place during the deformation of the steel base body 2 in regions.
    Hereinafter, three preferred embodiments of the method to the introduction of the metal pin 4 and a glass material 5 are described in the through hole 3.
    According to the first preferred embodiment of said method steps, a steel strip is provided as the starting material, wherein it may be provided that the steel strip has previously been annealed in order to partially or substantially completely eliminate possible solidifications which may be caused by a rolling process whose production could have originated.
    In this first preferred embodiment of the method it is provided that the passage opening 3 is produced by punching in the steel strip. It is provided below that the steel base body 2 is punched out of the steel strip, which already has the passage opening 3. It can be provided that the steel strip or at least the region of the steel strip which will be punched out as a steel base 2, is work hardened by defined loads by the punch or parts of the punching machine, wherein it can be provided in particular that in each punching step a little further Degree of work hardening is caused. As an alternative to strain hardening in the context of at least one punching process, a separate process step may be provided in which the steel base body 2 is loaded in order to achieve work hardening.
    According to the second preferred embodiment of said method steps, it is provided that a basic shape of the steel base body 2, which preferably already approximately substantially has the outer contour of the ignition base 1, is produced, in particular by cutting a wire to length or by
    ......... 6 ..... 33773 / lh
    Production of the corresponding part as a turned part. It is subsequently provided that the passage opening 3 is produced by a material-removing method in the steel base body 2. In particular, metal-removing processes, such as drilling, or electro-erosion processes, such as spark erosion, are provided as material-removing processes. Preferably, after the production of the passage opening 3, the work hardening takes place as already described.
    According to the third preferred embodiment of said method steps, it is provided that a basic shape of the steel base body 2 is produced analogously to the preceding paragraph, and subsequently that the passage opening 3 is produced by punching in the steel base body 2. Punching refers to a form of deformation in which a depression is introduced from both sides into the end faces of the steel base body 2 or its basic shape, and a web existing between these depressions is pressed from the one depression through the other depression with a punch. Since no die is provided as a counterpart to the stamp, it is not a punching operation in which a punch presses against a material which rests on a base, the die, which dictates the shape of the punched out hole. In the absence of a die, it is therefore not a punching process. Preferably, after the production of the passage opening 3, the work hardening takes place as already described.
    It can be provided in all the described method also further process steps for further shaping the outer contours of the steel body 2.
    After, in particular, according to one of the three preferred methods described above, a steel body 2 was prepared with a through hole 3, a first metal pin 4 and a glass material 5 is arranged in a further process step in the through hole 3. The glass material 5 is intended to both hold the first metal pin 4 in a finished firing socket 1 and to electrically insulate it from the steel base body 2. As already stated at the outset, the glass / metal bushings or glass / metal connection in question is exposed to particular stresses. 7/16 ......... 7 ..... 33773 / lh
    It is preferably provided that the glass material 5 is introduced in the form of a glass ring in the passage opening 3, and further the first metal pin 4 is disposed in an inner opening of the glass ring. This glass ring is preferably formed by sintering or by cutting to length a drawn semifinished product. Alternatively, however, it can also be provided that the first metal pin 4 is introduced into the passage opening 3 and held without contact with the lateral surfaces of the passage opening 3, while the tubular space between the passage opening 3 and the first metal pin 4 with a granulated or pulverulent glass material 5 is completed.
    The arrangement of the steel base body 2, the glass material 5 and the first metal pin 4 formed in accordance with the preceding paragraph will be referred to hereinafter as a meltdown arrangement. To connect the glass material 5 with the first metal pin 4 and the steel base body 2 is provided to heat the Einschmelzanordnung. Due to its amorphous structure, glass changes its properties conspicuously, although not linearly, with increasing temperature, whereby no exact melting temperature can be specified.
    It is therefore envisaged that the sealing assembly is heated in an oven or other heating arrangement at least to a glass wetting temperature. The glass wetting temperature is a temperature which is so high that the glass material 5 - in a substantially stationary temperature state - wets at least partially on both the first metal pin 4 and the steel base body 2. This can easily be proven or established with established measuring methods.
    The height of the glass wetting temperature or the temperature range of the glass wetting temperature is dependent on the type of glass used. Typically, the glass wetting temperature is more than 600 ° C, especially more than 700 ° C.
    It may also be envisaged to heat the fuser assembly until the glass material has a predeterminable viscosity, preferably less than 104 poise. 8/16 8 33773 / lh
    In order to achieve a secure and permanent connection of the glass material 5 with the first metal pin 4 and the steel base body 2, a heating of the sealing assembly is required for a certain minimum period of time, which is referred to as Glaseinschmelzzeitdauer usually. In addition to the type of glass used and the associated glass wetting temperature, this is also dependent on the maximum temperature reached in each case in the oven. In particular, the period of time during which the melt-down arrangement must be kept above the glass wetting temperature in order to form a glass / metal compound is designated as the glass melting time period. Alternatively, and for ease of comparison, it may be envisaged to use, instead of the glass wetting temperature, the temperature of the P-S-K line in the iron-carbon diagram, which is 723 ° C for most steels.
    Typical values for the required Glaseinschmelzzeitdauer are in the range between 5 and 40 minutes, in particular between 20 and 30 minutes, depending on the actual temperature profile of the particular furnace used and the glass material 5, and can be determined by simple test series.
    To ensure a secure glass / metal connection, it is preferable to heat the fuser assembly for a period of time greater than the glass fusing period, which is referred to as a fusing period.
    In order to produce a safe and durable glass / metal connection, when using typical types of technical glass, it is preferable to heat the sealing assembly to maximum temperatures of more than 750 ° C. It is therefore envisaged to heat the melting-in arrangement, which comprises a steel base body, to temperatures above the so-called P-S-K line in the iron-carbon diagram. At such temperatures, however, microstructure transformations occur in the steel base body 2, in particular recrystallization, in which dislocations are degraded, as well as a reshaping of the lattice structure, and therefore also a degradation of deformation martensite. In this case, the period of time in which substantially complete degradation of the dislocations and of the deformation martensite occurs is referred to as the structural regrind time. 9/16 9 33773 / lh
    It has been found that when the fuser assembly is heated to a temperature higher than the glass wetting temperature for a fusing period which is greater than the glass fusing period and at the same time smaller than the fouling re-conversion period, a substantial increase in so-called glass squeezing force can be achieved. The glass extrusion force is the force that is required to remove the melted glass material 5 again from the steel base body 2. By the subject measures, the glass extrusion force compared to conventional methods can be surprisingly increased by 20% to 40%, without hiezu further mechanical structural changes would be required on one of the parts of the firing socket 1.
    By the subject measures is further unexpectedly the pin extraction force, therefore, the force which is necessary to remove the first metal pin 4 from the through hole 3, by 5% to 30% can be increased.
    Investigations have shown that it can be achieved by deliberately lower heating of the melter arrangement that the strength-enhancing structural constituents, in particular dislocations and deformation martensite, are not completely degraded, but retained to a part, whereby the steel body 2 of a lighter according to the invention a high strength and in particular has a high dimensional stability, which in turn has a positive effect on the glass / metal compound.
    It is therefore preferably provided that the melting-in period is so low that deformation martensite and / or dislocations are retained in the structure of the steel base body 2. It is provided that dislocations and / or deformation martensite in a sample of the steel body of a lighter with already formed glass / metal compound can be determined by conventional metallurgical processes. In particular, it is provided that at least when the micrograph of 1000: 1 deformation martensite and / or dislocations in more than one grain, in particular in at least 20% of the grains and / or 20% of the surface of the micrograph, of the microstructure is detectable.
    It has been shown that the strength has a direct correlation to the measurable hardness, especially the Vickers hardness, so that by means of hardness measurement directly on the 10/16 10 33773 / lh
    Strength of the steel body 2 can be closed. This is advantageous since it would not be possible to measure the tensile strength directly on such a small component. The high strength or strength of the steel body 2 has a positive effect on the already mentioned extrusion force of the glass material 5 in the through hole 3.
    Preferably, it is therefore provided that the melting time period and / or the temperatures are so low that the steel base body after the melting process has a Vickers hardness of at least 140 HV, in particular at least 150 HV, especially at least 160 HV.
    It is particularly preferred that the meltdown arrangement be kept at temperatures above 723 ° C. for a period of less than 30 minutes.
    Furthermore, it is preferably provided that the sealing assembly is heated to a temperature of at most 940 ° C, in particular at most 880 ° C.
    The two measures described above are practical values for achieving the described benefits. Through appropriate experiments, the relevant values can be easily further optimized.
    Corresponding firing bases 1 generally have a second metal pin 6, which is fixed to the steel base body 2, in particular the first side 8, in an electrically conductive manner, in particular soldered. It can be provided that this second metal pin 6, which usually serves as ground contact, is both butt soldered to the steel base body 2, but it can also be provided that the second metal pin 6 in a corresponding recess or a further opening of the Steel body 2 is arranged. It can be provided to attach the second metal pin 6 in a separate step to the steel body 2, but it is preferably provided to attach the second metal pin 6 in a soldering together with the melting process on the steel body 2.
    It is therefore preferably provided in development that - before heating the Einschmelzanordnung - at one area of the steel body 2, a second 11 33773 / lh
    Metal pin 6 is arranged together with a Lot 7, and that simultaneously with the melting of the first metal pin 4, the second metal pin 6 is soldered to the steel base body 2. This can be dispensed with an additional or separate heating of the steel body 2 or a part thereof. As a result, only a partial structural change in the steel base body 2 can be prevented, which would be caused by a subsequent selective soldering, and would lead to a weakening of the steel base body.
    With regard to the solder used, it should be noted that this has a correspondingly low melting temperature in order to achieve the formation of a wet and warm solder joint at the maximum temperatures described above. Corresponding solders such as Ag72Cu28 are known.
    The present invention further relates to a firing base 1 for pyrotechnic systems, wherein the firing base 1 has a steel base body 2 with a passage opening 3, wherein in the passage opening 3, a first metal pin 4 and a, the first metal pin 4 with respect to the passage opening 3 insulating, glass material. 5 are arranged, wherein the steel base body 2 has deformation-induced microstructural transformations.
    As already stated above, it is preferably provided that the deformation-induced microstructures transform deformation martensite and / or dislocations, whereby the stated advantages can be achieved.
    claims:
    权利要求:
    Claims (13)
    [1]
    DR. FERDINAND GIBLER DR DR. WOLFGANG POTH Austrian and European Patent and Trademark Attorneys 33773 / lh GIBLER & POTH PATENTANWÄLTE PATENT CLAIMS 1. A method for producing a lighting base (1) for pyrotechnic systems, wherein • a steel base body (2) is work hardened to form microstructural transformations, • in the steel base body (2) a through hole (3) is introduced, • in the through hole (3) a first metal pin (4) and a, the first metal pin (4) relative to the passage opening (3) insulating, glass material (5) are arranged, wherein the thus formed Einschmelzanordnung steel base body (2), glass material (5) and the first Metal pin (4) is heated to a glass wetting temperature, and wherein a melting time period of heating the sealing assembly is greater than a Glaseinschmelzzeitdauer and less a Gefuggerumwandungszeitdauer.
    [2]
    2. The method according to claim 1, characterized in that the glass material (5) is designed as a glass ring.
    [3]
    3. The method according to claim 1 or 2, characterized in that the melting time is so low that deformation martensite and / or dislocations in the structure of the steel base body (2) are maintained.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the smelting arrangement is maintained for a period of less than 30 minutes at temperatures above 700 ° C. 13/16 • · • · * 13 · 33773 / lh
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the meltdown assembly to a temperature of at most 940 ° C, in particular at most 880 ° C, is heated.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that - before the heating of the Einschmelzanordnung - at a portion of the steel base body (2) a second metal pin (6) together with a Lot (7) is arranged, and that at the same time the melting of the first metal pin (4) of the second metal pin (6) is soldered to the steel base body (2).
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the passage opening (3) is produced by punching in a steel strip.
    [8]
    8. The method according to claim 7, characterized in that from the steel strip of the steel base body (2) is punched out.
    [9]
    9. The method according to any one of claims 1 to 6, characterized in that the passage opening (3) by a materialabtragendes, in particular machining or electroerodizing process in which, in particular designed as steel turned part, steel base body (2) is produced.
    [10]
    10. The method according to any one of claims 1 to 6, characterized in that the passage opening (3) by punching in the steel base body (2) is produced.
    [11]
    11. The method according to any one of claims 1 to 8, characterized in that the steel base body is upset to achieve the work hardening.
    [12]
    12. ignition base (1) for pyrotechnic systems, wherein the ignition base (1) has a steel base body (2) with a through hole (3), wherein in the through hole (3) a first metal pin (4) and, the first metal pin (4 ) relative to the passage opening (3) insulating, glass material (5) are arranged, characterized in that the steel base body (2) deformation-induced microstructural transformations.
    [13]
    13. igniter base (1) according to claim 12, characterized in that 14/16 14 33773 / lh the deformation-induced microstructural transformations deformation martensite and / or dislocations include. Cf, Ί & Gibler & Poth Patent Attorneys OG (Dr. F. Gibler or Dr. W. Poth)
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    同族专利:
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    引用文献:
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    DE102020202794A1|2020-03-04|2021-09-09|Electrovac Hacht und Huber Gesellschaft mit beschränkter Haftung|Fuse base|US5157831A|1991-12-20|1992-10-27|Alfred University|Process for preparing an hermetically sealed glass-metal electrical connector|
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    法律状态:
    优先权:
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    AT11592012A|AT513505B1|2012-10-25|2012-10-25|Method of manufacturing a firing base for pyrotechnic systems and firing bases for pyrotechnic systems|AT11592012A| AT513505B1|2012-10-25|2012-10-25|Method of manufacturing a firing base for pyrotechnic systems and firing bases for pyrotechnic systems|
    EP13789393.9A| EP2912402B1|2012-10-25|2013-10-03|Method for producing an igniter base for pyrotechnic systems|
    PCT/IB2013/002273| WO2014064497A1|2012-10-25|2013-10-03|Method for producing an igniter base for pyrotechnic systems and igniter base for pyrotechnic systems|
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