• 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:
    A method is proposed for producing a firing base (1) for pyrotechnic systems, comprising the following steps: - an embossing step in which an outer contour of a base body (2) of the firing base (1) forms a cylinder jacket surface (3) and one on the cylinder jacket surface (3) subsequent shoulder (4) is embossed, wherein a generating straight line of the cylinder jacket surface (3) is parallel to the embossing direction, - a scraping step in which at least the cylinder jacket surface (3) is scraped off substantially in the direction of the generating straight line, and a punching step in which the shoulder (4) is removed.
    公开号:AT515349A1
    申请号:T66/2014
    申请日:2014-01-30
    公开日:2015-08-15
    发明作者:Christian Bauer；Dieter Dipl Ing Thumfart
    申请人:Electrovac Hacht & Huber Gmbh；
    IPC主号:
    专利说明:

    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 detonator is provided. Such igniters have a metal base with a base body through which a conductive contact is electrically isolated. Furthermore, another electrical contact for forming an ignition bridge is conductively connected to the main body. The metal base is subsequently firmly connected to a cap having a propellant, wherein the metal base is welded to the cap, in particular on a peripheral contact surface of the main body. When triggering the fire sentence while the detonator is charged with the full pressure, which is caused by the fire, and which ultimately drives the gas generator and inflates the airbag. As a result, such igniters are exposed to a considerable mechanical short-term load, similar to a blow, and special demands are placed on them.
    The basic body known firing socket can be punched here. The disadvantage of this is that the weld between the ignition base and the cap can reduce the overall load capacity of the lighter.
    The object of the invention is therefore to provide a method for producing a Anzündersockels of the type mentioned, with which the mentioned disadvantages can be avoided, and with which a Anzündersockel can be produced, which has a high strength and low production costs, and with which the Overall load capacity of a lighter can be improved.
    This is achieved by the features of claim 1 according to the invention.
    This results in the advantage that a firing socket can be produced by this method in a simple manner, which has a particularly good contact with the cap contact surface, whereby the overall load capacity of a lighter can be improved. Here lies the main body of the
    Ignition socket when fitting in the cap with a large part of the outer surface gap-free. It has been found here that a lit base can be produced by these process steps, which has a particularly smooth and uniform contact surface. As a result, a faultless welding of the igniter can be ensured with little effort, since the welding can be carried out under optimal conditions. As a result, a particularly reliable welding can be accomplished. As a result, a lighter with a high total load capacity can be produced with little manufacturing effort. Furthermore, the rejection of defective detonators during manufacturing can be reduced.
    The invention further relates to a firing socket according to the preamble of claim 11.
    The object of the invention is therefore further to provide a firing socket of the type mentioned, with which the mentioned disadvantages can be avoided, which has a high strength and low production costs, and with which the overall load capacity of a lighter can be improved.
    The advantages of the fuse socket correspond to the advantages mentioned above.
    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 drawings, in which only a preferred embodiment is shown by way of example. Showing:
    Fig. 1 shows a preferred embodiment of a fuze base after a first manufacturing step in section;
    Fig. 2 shows the preferred embodiment of a fuze base in a second manufacturing step in section;
    Fig. 3 shows detail A of Fig. 2;
    Fig. 4 shows the preferred embodiment of a fuze base after the second manufacturing step in section;
    Fig. 5 shows the preferred embodiment of a fuze base in a third manufacturing step in section;
    Fig. 6 shows detail B of Fig. 5;
    Fig. 7 shows the preferred embodiment of a lighter base after the third manufacturing step in section;
    Fig. 8 shows the preferred embodiment of a fuze base with an attached ignition bridge in section;
    Fig. 9 shows a preferred embodiment of a lighter prior to welding the lighter base with a cap in section;
    FIG. 10 shows detail C from FIG. 9, FIG.
    Fig. 11 shows the preferred embodiment of a lighter in section, wherein two different ways of welding are shown.
    Figures 1 to 11 show a preferred embodiment of a lighter socket in different stages of manufacture of a method of manufacturing a lighter socket 1 for pyrotechnic systems.
    A fuze base 1 is a base for a lighter 13 of a pyrotechnic system. Such lighters 13 are provided in particular for airbags in motor vehicles and are also referred to as airbag detonators. In addition, these can also be used in automatically inflating lifejackets and lifeboats, emergency slides for aircraft, belt tensioners and / or battery separation systems. Such lighters 13 are intended above all for applications in which they have to withstand a pressure built up by this after the ignition of a pyrotechnic system for a certain time, without being destroyed itself, unlike ignition arrangements for mines or bombs, which during ignition be destroyed.
    The method of manufacturing a lighter socket 1 for pyrotechnic systems comprises several steps.
    The method comprises an embossing step, in which a preliminary outer contour of a base body 2 of the ignition base 1 is embossed to form a cylinder jacket surface 3 and a shoulder 4 adjoining the cylinder jacket surface 3, wherein a generating straight line of the cylinder jacket surface 3 is parallel to the embossing direction. In the embossing step, which is a step of the method, the starting material for the main body 2 is transformed in a forming process, in particular a cold forming process. In particular, pressure forming may be provided as a deformation process. In this case, the generating straight line is a straight line which extends within the cylinder jacket surface 3 and is parallel to a longitudinal axis of the cylinder jacket surface 3.
    The main body 2 may in particular be made of an electrically conductive material.
    Particularly preferably, it can be provided that the base body 2 is made of steel.
    In particular, the base body may have a thickness between 2 mm and 5 mm.
    The embossing step serves to preform the outer contour of the basic body 2, that is to say to form a preliminary outer contour of the basic body 2, so that it can be punched more easily. Here, a starting material for the base body 2 is compressed by a part of the preliminary outer contour of the base body, so that substantially a part of the cylinder surface 3 of the base body 2 is already formed, wherein the compressed starting material forms a, in particular circumferential, shoulder 4.
    The embossing step can be carried out with a starting material from which a plurality of basic bodies 2 can be preformed. This
    The starting material may in particular be a band or a plate.
    Furthermore, it can be provided that the embossing step is carried out with a starting material, from which a base body 2 is preformed. This starting material may in particular be the band or the plate, or a cut-out pill.
    The method further comprises a scraping step, in which at least the cylinder jacket surface 3 is scraped off substantially in the direction of the generating straight line. The scraping is in this case a machining process, wherein material is removed along a defined cutting edge or edge. In this case, the scraping produces, at least on the cylinder jacket surface 3, a smooth and substantially tear-free contact surface 28 of the base body. By the scraping step, the outer contour of the base body 2 is also changed. The scraped-off cylinder jacket surface 3 forms at least part of the contact surface 28 of the base body 2 for connection to the cap 14 of the lighter 13.
    Furthermore, the method comprises a stamping step in which the shoulder 4 is removed. During the stamping step, material is separated by a shearing motion. Here, the shoulder 4 is punched in the punching step and removed from the base body 2. By the punching step, the base body 2 is further formed, wherein material is removed from the base body 2.
    In the finished state of the firing base 1, the base body 2 has its final outer contour with the contact surface 28, which is provided for contacting a cap 14 of the lighter 13.
    It has been shown here that, when producing the outer contour of a basic body 2 with only the punching step, a high punching tear of up to 70% of the thickness of the basic body 2 results from the usual thicknesses of the basic body. The punching rupture here forms an uneven and poorly defined abutment surface for the connection with the cap 14, which can cause a gap which is disadvantageous for the welding process when fitting into the cap 14. Through this gap process-reliable welding is difficult and the
    Total load capacity of the lighter 13 is reduced.
    By the combination of the embossing step, the punching step and the scraping step, a base body 2 can be produced, which has a particularly large and smooth contact surface 28, whereby the firing base 1 can be reliably welded to the cap 14.
    Furthermore, a firing base 1 is provided for pyrotechnic systems, wherein the firing base 1 is produced by this method.
    The contact surface 28 of the main body may in particular be cylindrical, particularly preferably circular cylindrical, and have a height of 60% to 90% of the thickness of the main body 2.
    Furthermore, a lighter 13 may be provided for pyrotechnic systems with such a fuze base 1.
    Furthermore, it can be provided that, in a pre-embossing step, an elevation 11, in particular a conical elevation, is embossed on a first end face 12 of the main body 2. The conical elevation 11 can be developed in particular to a tapered insertion region of the main body 2. As a result, the lighter socket 1 can be more easily inserted into the cap 14. Fig. 1 shows an intermediate form of the main body 2 of the preferred embodiment of the ignition socket 1 after the Vorprägeschritt.
    The first end face 12 may in particular be provided to point into the interior of the lighter 13.
    Furthermore, it can be provided that the shoulder 4 is formed on a, opposite the first end face 12 second end face 15 by the embossing step.
    In Figs. 1, 4 and 7 to 11, the first end face 12 is above and the second end face 15 below, while in Figs. 2, 3, 5, and 6, the first end face 12 below and the second end face 15 is above.
    The embossing step can be carried out in particular with an embossing tool 16, particularly preferably with an embossing stamp.
    2 and 3 show the intermediate shape of the main body 1 immediately before the embossing step, wherein the base body 2 is arranged in the embossing tool 16.
    Here, the base body 2 can be arranged in the embossing step on the second end face 15 on a support 17 of the embossing tool 16, while an embossing mold 18 of the embossing tool 16 presses from the first end face 12 on the base body 2 and the base body 2 opposite to the embossing mold 18 formed becomes.
    The embossing mold 18 has a cylindrical, in particular circular cylindrical, embossing recess 23 into which the base body 2 is pressed during the embossing step, wherein the cylinder jacket surface 3 is formed by the embossing mold 18.
    In this case, it can be particularly preferably provided that the embossing direction is in the direction of the generating straight line of the cylinder jacket surface 3.
    Particularly preferably, it may be provided that in the embossing step, the cylinder jacket surface 3 is formed circular-cylindrical.
    In particular, the cylindrical embossing recess 23 may have a diameter which corresponds to the diameter of the cylinder jacket surface 3 after the embossing step.
    Preferably, it can be provided that the shoulder 4 has a thickness of 10% to 70%, in particular 20% to 50%, of the thickness of the main body 2 after the embossing step.
    Furthermore, it can be provided that the cylinder jacket surface 3 is embossed with a height of 90% to 30%, in particular 80% to 50%, of the thickness of the main body 2.
    Furthermore, it can be provided that a transition 19 between the cylinder jacket surface 3 and the shoulder 4 is rounded. This can be achieved in particular by a rounded edge 29 of the stamping mold 18. This is exemplified in Fig. 3.
    Furthermore, it can be provided that at the beginning of the embossing step, the edge 29 of the embossing mold 18 rests on the lateral surface of the conical elevation 11. Here, a self-centering can be achieved, followed by the embossing step the cylinder jacket surface 3 on the conical lateral surface of the elevation 11.
    The shape of the main body 2 after the embossing step of the preferred embodiment is shown in FIG.
    Particularly preferably, it can be provided that first the embossing step, then the scraping step and subsequently the punching step is carried out. In this case, during the punching step, a diameter can be punched which corresponds to the diameter of the cylinder jacket surface 3 after the scraping step, as a result of which the shoulder 4 can be punched without leaving any residue.
    Alternatively, it can be provided that the scraping step is carried out subsequently to the punching step. In this case, in particular a residual shoulder, which has remained after the removal of the shoulder 4, are removed in the scraping step.
    In particular, it can be provided that the punching step is carried out immediately following the scraping step. In this case, the method can be carried out with a particularly small amount of time.
    Particularly preferably, it can be provided that the scraping step and the punching step are carried out in the same working step of a punching tool 5. The punching tool 5 can perform both the scraping step and the punching step without being deposited. This has proved to be particularly advantageous, since in this case a contact surface of the base body 2 designed in a particularly advantageous manner for the cap 14 is formed. In the case of a punching step, this generally results in an eruption 20, the length of the tear in the thickness direction of the basic body 2 correlating with the thickness of the stamped material. By forming a shoulder 4 in the embossing step, the thickness of the material to be punched can be kept low.
    A different from the punching tool 5 scraping tool is not required.
    In this case, in particular, the scraping step and the punching step can be carried out in the same working step in an uninterrupted motion.
    By the combination of scraping step and punching step to a step, the punching tool 5 can first scrape the cylinder surface 3 until it reaches the shoulder 4, where subsequently the shoulder 4 is punched immediately thereafter. In this case, the scraping step does not increase the tear in the following punching step. In this case, it can also be achieved that no residual shoulder is left over from the shoulder 4 after the punching step, since the punching tool 5 already begins the punching step in the material of the base body 2.
    Particularly preferably, it can be provided that the punching tool 5 scrapes from the first end face 12 in the direction of the second end face 13.
    Furthermore, it can be provided that only the cylinder jacket surface 3 is scraped off in the scraping step. As a result, the abgeschabende thickness of the base body 2 can be kept low, whereby the tool wear can also be kept low.
    Particularly preferably, it can be provided that the cylinder jacket surface 3 is scraped off in the scraping step, and in particular also in the punching step, around the entire circumference. Here, the entire cylinder surface 3 can be scraped off in one step.
    4 and 5 show the intermediate form of the main body 1 immediately before the scraping step, wherein the base body 2 is arranged in the punching tool 5.
    The punching tool 5 may in particular have a punch 21 and a counterpart 22 with a cylindrical recess 6. The cylindrical recess 6 may in particular be circular-cylindrical. The punch 21 is formed opposite to the counterpart 22.
    In this case, the base body 2 can be arranged in the punching tool 5, and the scraping step and the punching step are carried out by a successive movement of the punch 21 and the counterpart 22, wherein the punch 21 is moved into the recess 6 of the counterpart 22.
    Furthermore, it can be provided that the relative movement between the
    Punch 21 and the counterpart 22 is parallel to the generating straight line of the cylinder surface 3.
    Particularly preferably, it can be provided that the punching tool 5 with the cylindrical recess 6 is used for the scraping step and the punching step, and that a diameter of the recess 6 is smaller than a diameter of the cylinder jacket surface 3 immediately after the stamping step. In other words, in the embossing step, an embossing tool 16 can be used with a embossing recess 23, wherein the embossing recess 23 has a first diameter, and for the scraping step and the punching step, the punching tool 5 are used with the cylindrical recess 6, wherein the recess 6 has a second diameter and that the second diameter is smaller than the first diameter. In this case, the cylinder jacket surface 3 with the first diameter can first be formed in the embossing step in a simple manner, and the cylinder jacket surface 3 can be scraped off to the second diameter in the scraping step, whereby the shoulder 4 is also removed by the punching tool 5 with the second diameter. In this case, the diameter of the contact surface 28 of the finished base body 2 does not exceed the second diameter.
    It has proved to be particularly advantageous that the diameter of the recess 6 is smaller by 0.01 mm to 1 mm, in particular by 0.15 mm to 0.4 mm, than the diameter of the cylinder jacket surface 3 immediately after the embossing step. In other words, the diameter of the recess 6 can be smaller by 0.01 mm to 1 mm, in particular by 0.15 mm to 0.4 mm, than the diameter of the embossing recess 23. By virtue of this selected difference in diameter, the cylinder jacket surface 3 can be particularly be scraped good because the abgespante part 24 of the cylinder surface 3 is easily deformed and there are no tears. In this case, a particularly reliable scraping of the cylinder jacket surface 3 can be achieved, wherein the scraped-off surface, which is then part of the contact surface 28, is particularly error-free.
    Fig. 7 shows the finished base body 2 of the preferred embodiment, wherein for illustrative purposes on one side of the punched shoulder 4 is shown with the deformed abgespanten parts 24 of the cylinder jacket surface 3. In the place of
    Body 2 on which the shoulder 4 was formed is partially a circumferential eruption 22 is formed. The scraped-off cylinder jacket surface 3 forms at least part of the contact surface 28.
    Furthermore, it may be preferred that a glass feedthrough opening 7 is introduced into the main body 2, that a first pin 8 is arranged in a glass body 9 in the glass feedthrough opening 7, and that a second pin 10 is conductively connected to the main body 2. Through the glass body of the first pin from the main body 2 is electrically isolated. The first pin 8 and the second pin 10 may also be referred to as pins or pins.
    As shown in Fig. 8, the second pin 10 may butt against the base body 2 and be welded or soldered thereto.
    Alternatively it can be provided that the second pin 10 is arranged in a recess of the base body or in a further passage opening of the main body 2.
    It can preferably be provided that the glass feedthrough opening 7 is formed before the embossing step. Alternatively, the glass feedthrough opening 7 may be introduced after the embossing step, the scraping step or the punching step.
    In particular, the glass feedthrough opening 7 can be formed centrally in the base body 2.
    The finished base body 2 with the attached first pin 8 and the attached second pin can in particular form the final firing socket 1.
    In a method for producing a lighter 13 for pyrotechnic systems, it may be provided, in particular, that the first pin 8 is conductively connected to the base body 2 via a firing bridge 25 of the firing base 1.
    Fig. 8 shows the final ignition socket 1 of the preferred embodiment, wherein additionally the ignition bridge 25 is mounted and connects the two pins 8, 10 together.
    In a method for producing a lighter 13 for pyrotechnic systems may further be provided that a fuze base 1 is inserted into an opening of the cap 14 and closes the cap 14, wherein in the cap 14 already a fire sentence 26 is arranged, and that the fuze base 1 firmly connected to the cap 14, in particular welded. In this case, the firing base 1 rests with its contact surface 28 on an inner side of the cap 14.
    In Fig. 9, the lighter socket 1 of the preferred embodiment is shown, wherein this is arranged in the cap 14 with the fire set 26. FIG. 10 shows the detail where the base body 2 rests against the cap 14 with the contact surface which essentially corresponds to the scraped-off cylinder jacket surface 3. The lateral surface of the conical elevation 11 and the elevation 20 form a gap to the cap 14.
    In Fig. 11, the firing base 1 of the preferred embodiment is fixedly connected to the cap 14 by a weld 27. The weld 27 can be introduced in particular by means of laser welding.
    Here, the weld 27 can be formed centrally and circumferentially on the cylinder jacket surface 3. This corresponds to the weld shown in Fig. 11 on the left side.
    Alternatively it can be provided that the weld 27 is formed on the second end face 13 circumferentially between the base body 2 and the cap 14.
    This corresponds to the weld shown in Fig. 11 on the right side.
    claims:
    权利要求:
    Claims (11)
    [1]
    Dl DR. FERDINAND GIBLER / ^ IQI CD P Π / ΝΤΙ Dl DR. WOLFGANG POTH VJ IDLCK Ot KU I Π Trademark Attorney's PATENT OFFICES CLAIMS 1. A method of manufacturing a firing base (1) for pyrotechnic systems comprising the steps of: - an embossing step, in which a preliminary outer contour of a base body (2) of the ignition base (1) is formed to form a cylinder jacket surface (3) and a shoulder (4) adjoining the cylinder jacket surface (3), wherein a generating straight line of the cylinder jacket surface (3) parallel to the Marking direction is: a scraping step in which at least the cylinder jacket surface (3) is scraped off substantially in the direction of the generating line, and a punching step in which the shoulder (4) is removed.
    [2]
    2. The method according to claim 1, characterized in that first the embossing step, then the scraping step and subsequently the punching step is performed.
    [3]
    3. The method according to claim 1 or 2, characterized in that the punching step is carried out immediately following the scraping step.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that in the scraping step, only the cylinder jacket surface (3) is scraped off.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the cylinder jacket surface (3) is scraped in the scraping step around the entire circumference.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the scraping step and the punching step in the same step of a punching tool (5) is performed.
    [7]
    7. The method according to claim 6, characterized in that for the scraping step and the punching step, a punching tool (5) with a cylindrical recess (6) is used, and that a diameter of the recess (6) is smaller than a diameter of the cylinder jacket surface (3 ) immediately after the embossing step.
    [8]
    8. The method according to claim 7, characterized in that the diameter of the recess (6) by 0.01 mm to 1 mm, in particular by 0.15 mm to 0.4 mm, smaller than the diameter of the cylinder jacket surface (3) directly after the embossing step.
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that in a Vorprägeschritt a, in particular conical, elevation (11) on a first end face (12) of the base body (2) is embossed.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that in the base body (2) a glass passage opening (7) is introduced, that in the glass passage opening (7), a first pin (8) in a glass body (9) is arranged , And that a second pin (10) is conductively connected to the base body (2).
    [11]
    11. Ignition base (1) for pyrotechnic systems, characterized in that the ignition base (1) is produced by a method according to one of claims 1 to 10.

    Gibler & Poth Patent Attorneys OG (Dr. F. Gibler or Dr. W. Poth)
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0911434A2|1997-10-22|1999-04-28|Zinser Textilmaschinen GmbH|Ring spinning spindle with yarn cutting device|
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    US6907827B2|2002-11-14|2005-06-21|Special Devices, Inc.|Pyrotechnic initiator having output can with encapsulation material retention feature|
    DE20314580U1|2003-03-03|2004-08-05|Schott Glas|Metal-glass fastening equipment lead-through for airbag or seat belt tension triggers has metal pins in a through-opening and a main body with front and rear sides and a release action|
    DE102005009644B4|2005-03-03|2013-09-12|Schott Ag|Ignition device for a pyrotechnic protection device, method for producing such an ignition device and gas generator with such an ignition device|
    EP3537093A1|2010-09-17|2019-09-11|Schott AG|Ring or board-shaped element and method for manufacturing the same|JP6293350B1|2017-12-01|2018-03-14|新光電気工業株式会社|Eyelet manufacturing method|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA66/2014A|AT515349B1|2014-01-30|2014-01-30|Method of making a lighter socket|ATA66/2014A| AT515349B1|2014-01-30|2014-01-30|Method of making a lighter socket|
    PCT/EP2015/000119| WO2015113746A1|2014-01-30|2015-01-22|Method for producing an igniter socket|
    EP15705767.0A| EP3099999B1|2014-01-30|2015-01-22|Method for producing an igniter socket|
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