EP2516776A1 - Procédé pour fabriquer des gâches de serrure et gâche de serrure - Google Patents

Procédé pour fabriquer des gâches de serrure et gâche de serrure

Info

Publication number
EP2516776A1
EP2516776A1 EP10798482A EP10798482A EP2516776A1 EP 2516776 A1 EP2516776 A1 EP 2516776A1 EP 10798482 A EP10798482 A EP 10798482A EP 10798482 A EP10798482 A EP 10798482A EP 2516776 A1 EP2516776 A1 EP 2516776A1
Authority
EP
European Patent Office
Prior art keywords
lock
base plate
cold
recess
lock holder
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
EP10798482A
Other languages
German (de)
English (en)
Other versions
EP2516776B1 (fr
Inventor
Bernhard Kordowski
Thomas Waldmann
Volker Westerwick
Holger Schiffer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kiekert AG
Original Assignee
Kiekert AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kiekert AG filed Critical Kiekert AG
Publication of EP2516776A1 publication Critical patent/EP2516776A1/fr
Application granted granted Critical
Publication of EP2516776B1 publication Critical patent/EP2516776B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/04—Strikers
    • E05B85/045—Strikers for bifurcated bolts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0004—Lock assembling or manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49986—Subsequent to metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/68—Keepers

Definitions

  • the invention relates to a method for producing the lock holder of locks, preferably motor vehicle locks, wherein the consisting of base plate with retaining holes, lock bracket with two stirrup legs and closing bar and recess lock holder is made in one piece and wherein the recess a part of the catch of the motor vehicle lock when closing the vehicle door receiving and the stirrup leg encompassed by the part is designed to correspond with the catch.
  • the invention also relates to a lock holder for a lock, preferably a motor vehicle lock, consisting of a base plate with two or more retaining holes and a lock bracket with a closing web, stirrup leg and encompassed stirrup leg predetermining recess.
  • Such lock holders are applicable for motor vehicle locks but also in connection with locks for doors, gates and locks of buildings.
  • Lock holder for locks in various designs are z. B. basically known for motor vehicle locks.
  • DE 20 2007 012 253 A1 and DE 10 2007 041 479 A1 describe and show a lock holder of a motor vehicle lock, which is designed so that it can be manufactured with relatively little effort.
  • the upper closing web configured as a flat band is designed so that it protrudes beyond the inlet region of the base plate, whereby an increased tensile strength of the locking mechanism in the closed state, ie, especially in the event of a crash, is achieved.
  • the lock holder is designed in two parts, wherein the retaining bolt is a separate component which is captively connected to the bracket and the bracket.
  • a lock holder is produced by punching and punching, which is also to produce in unusual geometries.
  • the invention is therefore based on the object to propose a method for the simple production of a stable lock holder, which requires no post processing 20 and a corresponding lock holder itself.
  • the task is procedurally achieved in that the lock holder is formed by cold extrusion from a preferably round raw material by massive forming a T-shaped semifinished product and thus produced in its basic geometry, while the retaining holes and the recess in the lock bracket then from the high Kaltstauch beforehand present semifinished product are formed.
  • a complete lock holder is made in usually two to five 30 steps from a preferably round monolith made of steel, where it is possible on the cold extrusion, to realize an overall geometry, the post-processing in any case makes superfluous.
  • Cold extrusion is a massive forming process in which both hollow and solid bodies can be produced in a multistage production process using multi-stage presses.
  • the material is made to flow under the action of a high pressure, with temperatures up to about 900 ° C in the object, ie so can occur in the lock holder, which as mentioned cause a transformation occurs, which makes any post-processing unnecessary.
  • the raw material produced by shearing from a round or square or square solid rod and then by cold extrusion to the lock bracket and base plate predetermining T-shaped semi-finished chamfering the holding holes by pressing through one, preferably a plurality of matrices is transformed.
  • the raw material representing the starting point of the process is always shaped the same and has the same amount of available material, because it is sheared off from a preferably round solid bar, in order then dies or the cold extrusion process to be fed.
  • the output parts are all treated the same to give the lock bracket and base plate exhibiting T-shaped semi-finished, which is then appropriately further deformed or completed to the desired lock holder.
  • the basic steps performing cold extrusion produces, as already mentioned several times this T-shaped semi-finished products, which as such but a reworking of the surface does not require, but rather optimally shaped and trained for further operation and in particular the processing in the lock available.
  • the lock bracket is so far massively reshaped by cold extrusion in the axial direction with the stirrup legs and omitting the base plate, that subsequently the recess in the lock bracket can be made by cold punching co-generation of the required for gripping the catch quarter circle around the associated stirrup leg.
  • Retaining holes and recess are made by punching or laser cutting, which does not constitute a post-processing, but rather also listened to the manufacturing steps. Since lock holders are usually produced in large numbers, the reduction in production costs makes a very positive overall impression. In addition, the increased mechanical strength is emphasized.
  • the lock holder can be brought with the inventive method of one piece in the final geometry.
  • the different cross-sectional strengths allow an adaptation of the cross-sectional shape, so that the optimal overall geometry is realized at the end. This means that material can be reduced in weakly loaded areas of the lock holder and material can be accumulated in the heavily loaded area. Particular preference is given to a sectionwise increase in the cross-sectional thickness by more than 30%, for example in the region of the bar arms.
  • the cross-sectional strengths are measured in the normal direction of the surface of the lock holder. While in known lock holders which have been produced from sheet steel, the cross-sectional thickness is almost constant and corresponds to the sheet thickness of the steel sheet, the process end product according to the invention is better adapted to the loads occurring with its different cross-sectional strengths.
  • the necessary manufacturing steps can be selectively reduced by the recess and the retaining holes are produced in the context of cold extrusion by using transverse inserts.
  • transverse inserts it is particularly well possible in the weakly loaded areas to reduce material and heavily contaminated areas supply, so then gives the above-mentioned optimal lock holder.
  • the high loads exposed transverse inserts for the preparation of the recess and the retaining holes give the opportunity to selectively supply the "superfluous" material to the highly loaded areas of the lock holder and accumulate here and thus optimally optimize the resilience of the lock holder without reworking is necessary.
  • a cold heading steel preferably a 33B 2 matnr. 1.5514 with ⁇ 0.009 wt% Boron Rm max. 580 N / mm 2 is used, preferably with 0.005 wt.% Boron.
  • the addition of boron increases the good cold flowability and at the same time also increases the optimum formation of the surface of the entire component.
  • a round or square or square raw material can also be a cold heading steel 35B 2 matnr. 1,551 1 with max. 0.005 wt.% Boron Rm 500 - 650 N / mm 2 .
  • This Kaltstauchstahi can be optimally used by the addition of boron for cold extrusion and leads to the good properties of the component, as described earlier.
  • a stainless steel X5CrNi1810 can be used.
  • the entire lock holder provided after completion with a corrosion protection layer and / or that during punching a particular surface structure resulting grooves or knurls is applied to the associated stirrup leg.
  • the corrosion coating is a kind of post-processing, but is not processing in the sense that only one layer must be applied and no change in the overall geometry is necessary.
  • the anti-corrosion layer ensures that the lock holder made of cold-forged steel can perform its task optimally in the motor vehicle lock.
  • the applied grooves or knurling or even simple Grooves or webs ensure even force transmission and avoid annoying background noise (creaking).
  • a stainless steel X5CrNi1810 preferably with 0.08 - 0.12% C, 1% Si and 16 - 20% Cr can be used.
  • a lock holder produced by the method according to the invention consists of a base plate with two or more retaining holes and a lock bracket with a closing web and bracket leg predetermining recess.
  • This lock holder solves the object according to the invention in that the base plate and lock bracket are integrally formed from a preferably round, rod-shaped raw material by cold extrusion under specification of the shape of the closing web and the stirrup leg and the base plate and that then the recess and the retaining holes are generated by cold punching.
  • a lock holder is created, which can be used immediately after the punching of the holding holes and the recess without any further processing or post-processing step.
  • the saving of the post-processing is important for pricing, because additional organizational and process steps are eliminated, but in particular the production time is minimized. It is particularly advantageous that in cold extrusion, the possibility is exploited of selectively weakening weakly loaded areas of the lock holder by removing material, while heavily loaded areas of the lock holder can be purposefully reinforced by additional material unnecessary, but that the entire surface is present in high cold crushing quality, with roughness depths of 12 - 18 mm. In the subsequent punching then the special surface structure has been applied to the loaded stirrup leg.
  • the base plate is formed with the lock bracket in a multi-stage press. Shearing off or Cutting the raw material pieces from the solid rod material is integrated into the overall operation and, if possible, assigned to the first stage of the multi-stage press, with advantageously shortening being possible instead of shearing off. Also, the step of manufacturing the recess and the retaining holes is integrated as far as possible in the multi-stage process, then just in the last part of such a multi-stage press.
  • the raw material used is preferably a round rod-shaped cold-upsetting steel, preferably a 33B 2 matnr. 1.5514 or a 35B2 matnr. 1.5511 with max. 0.005 wt.% Boron or a stainless steel.
  • the base plate is first worked out of the rod-shaped base material or raw material, whereupon then the lock bracket is produced by cold extrusion.
  • the base plate is circular and the lock bow in the middle of the base plate is formed like a torus or outstanding.
  • the recess and the retaining holes can be made so that the lock bracket is in the form of a gate, and depending on the nature of the manufacturing of the recess and the retaining holes material can be cleverly moved again, if it was in the previous Work steps in the multi-stage press for some reason could not be put in the correct position. All this is possible because the high pressure creates a temperature that allows the rod material to be deformed so as to form a one-piece, stable lock holder after completion.
  • the base plate and the bar arms and the closing bar When reshaping the base plate and the bar arms and the closing bar it is expedient to leave around the bar arms a kind of bulge, which is used according to the invention that the bar arms have a kind of base in the bulge on the base plate.
  • the bulge arises when forming the base plate and the lock handle.
  • the closing web is equipped on one or both sides with shoulders sloping down to the outer edges of the bar legs and one or both bar legs have a bulged curvature. This shaping also brings advantages in the production process, so that for these reasons and because of the advantageous stability values, such a shaping is expedient.
  • the invention is characterized in particular by the provision of a method and a subsequently produced lock holder, which make it possible to produce the lock holder in one piece, wherein the individual working steps are selected so skilfully that it is possible to manage with a few pressing operations or work processes.
  • the single lock holder is removed from a solid bar material, so that already the round shape of the base plate is predetermined. It is then only necessary to form from this round rod material, the base plate and the unit forming a lock bracket, so that then only the recess in the lock bracket and retaining holes must be made. So you can deal with relatively few steps, but receives after completion of this process, an end product, ie, a lock holder, the immediately without any further processing steps z. B.
  • Figure 1 shows a finished lock holder with recess
  • Figure 2 is a plan view of such a lock holder and Figure 3 is a Vorkopfansicht.
  • the base plate 2 is circular, wherein the retaining holes 3, 4 are arranged on the outer circle of the base plate 2 in such a way that the remaining protruding from the base plate 2 components also in the center of the base plate 2 are to be arranged.
  • the stirrup leg 5 is reinforced.
  • About the closing web 6 of the bar arm 5 is connected to the hanger arm 8, so that there is an overall reinforced lock bracket.
  • Closing bar 6 and comprehensive bar leg 8 are connected to each other at the free end 7 or even merge into one another. Centered between the hanger arm 5 and hanger arm 8, the recess 10 is provided, through which engages the rotary latch, not shown around the hanger arm 8 or 5.
  • both the bar arm 5 and the bar arm 8 are connected via a kind of bulge 11 with the actual base plate 2 and are formed out of this. This creates a common base 12, which also contributes to the stabilization of the entire lock holder 1. About the widened base 12 of the stirrup leg 5, 8 of the lock bracket 9 go uniformly in the base plate 2 over.
  • the stirrup leg 5 has a corrosion layer 20 according to FIG. 1, but this is only necessary if the stainless steel is not used.
  • the corrosion layer 20 is usually applied to the base plate 2 and the lock bracket 9. It can also be seen in FIG Cold punching of recess 10 and retaining holes 3, 4 at the same time for embracing the rotary latch not shown here smooth quarter circle (between 9 and 12 o'clock) on the encompassed hanger arm 8 is created during punching or (between 12 and 3 o'clock) at the hanger arm 5, if this is covered by the catch.
  • the special surface structure 20 ' is provided, which is applied during punching.
  • the hanger arm 8 preferably also has this surface structure 20 '.
  • the illustration in Figure 1 illustrates that a corresponding
  • Lock holder 1 has been formed out of a rod-shaped monolith by cold extrusion.
  • the shearing off or cutting to length of this rod-shaped monolith takes place, from which the base plate 2, which is already predetermined by the outer contours, is then formed in a first pressing process.
  • the unit is transformed by bar arms 5, 8 and 6 closing bar, which as already mentioned earlier, therefore, while maintaining the connection with the base plate 2 is possible because of the cold extrusion process temperatures of about 900 ° C can be achieved, which a corresponding deformation favors.
  • the recess 10 and the retaining holes 3, 4 is then produced.
  • FIG. 2 shows a plan view, whereby it is again made clear here that material has been accumulated on the inner side 19 of the retaining bolt 5 so as to reach this bulbous curvature 18.
  • the bulge 11 is somewhat narrow in this representation, also it can be seen that the base plate 2 here has no circular shape, but rather is somewhat oval cut, because this is advantageous in certain motor vehicle locks. In general, such a special shape for the base plate 2 but not required.
  • Figure 3 actually shows the special shape of the closing web 6, 15 at the outer edges 14, 15 sloping shoulders 16, 17 has. In the illustration in Figure 3, even a certain rounding results, but this is not absolutely necessary, but it may be as mentioned a bevel, thereby facilitating the installation, but in total also given a very stable lock holder 1 according to FIG is.
  • the bar arm 5 is formed reinforced. He has about 20 - 40% more mass, as the hanger arm 8. Also in Figure 3 is the in FIG.
  • the lock holder 1 in the manner shown is formed as a one-piece and very solid component, wherein, as already mentioned advantageous at least 5% or even 20% of the base surface of the base plate 2 has a different cross-sectional thickness. Under base surfaces are the top and bottom surfaces and not the lateral edge surfaces of the base plate 2 to understand. In the illustration shown in Figure 1, the retaining holes 3, 4 and the areas of the bulge 11 are formed with different cross-sectional thicknesses.
  • the surface structure 20 ' is applied to compensate for the load in the contact region of the rotary latch by punching. These are grooves or webs, threads or grooves or knurls on or in the outer wall of the bar arms 5, 8, which lead to a reduction of the load, in particular also the noise load. This surface structure 20 'is generated when punching the recess 10, so that a separate operation is not required. All mentioned features, including the drawings to be taken alone, are considered to be essential to the invention alone and in combination.

Abstract

Pour fabriquer une gâche de serrure (1), destinée de préférence à des serrures de véhicules à moteur, on effectue tout d'abord un formage massif d'une matière première en acier, en forme de barre, par matriçage à froid en plusieurs étapes individuelles permettant d'obtenir ladite gâche de serrure (1), la géométrie finale de la gâche (20) étant produite simultanément à ce processus de formage massif de sorte qu'il n'est pas nécessaire d'avoir recours à d'autres étapes d'usinage. Il reste ensuite uniquement à pratiquer l'évidement (10) dans l'anse formée ou façonnée de manière appropriée, comportant les bras (5, 8), et à ménager les orifices de maintien (3, 4) dans la plaque de base (2) par poinçonnage ou découpe par laser ou similaire. La gâche de serrure (1) obtenue selon un tel procédé se caractérise par une géométrie globale nette et lisse, une structure superficielle (20') étant appliquée dans les zones fortement sollicitées et éventuellement plusieurs couches de matériaux étant appliquées, ce qui permet d'obtenir, une fois les étapes individuelles du matriçage à froid accomplies, une gâche de serrure ne nécessitant pas de finissage ultérieur.
EP20100798482 2009-12-24 2010-11-06 Procédé pour fabriquer des gâches de serrure et gâche de serrure Active EP2516776B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009060375 2009-12-24
DE102010011716A DE102010011716A1 (de) 2009-12-24 2010-03-17 Verfahren zum Herstellen von Schlosshaltern und Schlosshalter
PCT/DE2010/001303 WO2011076161A1 (fr) 2009-12-24 2010-11-06 Procédé pour fabriquer des gâches de serrure et gâche de serrure

Publications (2)

Publication Number Publication Date
EP2516776A1 true EP2516776A1 (fr) 2012-10-31
EP2516776B1 EP2516776B1 (fr) 2015-01-07

Family

ID=44025264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100798482 Active EP2516776B1 (fr) 2009-12-24 2010-11-06 Procédé pour fabriquer des gâches de serrure et gâche de serrure

Country Status (8)

Country Link
US (1) US20120286525A1 (fr)
EP (1) EP2516776B1 (fr)
JP (1) JP6080157B2 (fr)
CN (1) CN102725466B (fr)
BR (1) BR112012015332A2 (fr)
DE (1) DE102010011716A1 (fr)
RU (1) RU2549036C2 (fr)
WO (1) WO2011076161A1 (fr)

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Also Published As

Publication number Publication date
CN102725466A (zh) 2012-10-10
JP2013515879A (ja) 2013-05-09
US20120286525A1 (en) 2012-11-15
BR112012015332A2 (pt) 2017-07-25
EP2516776B1 (fr) 2015-01-07
JP6080157B2 (ja) 2017-02-22
CN102725466B (zh) 2015-02-11
RU2012125907A (ru) 2014-01-27
WO2011076161A1 (fr) 2011-06-30
DE102010011716A1 (de) 2011-06-30
RU2549036C2 (ru) 2015-04-20

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