EP3039210B1 - Motor vehicle door closure - Google Patents
Motor vehicle door closure Download PDFInfo
- Publication number
- EP3039210B1 EP3039210B1 EP14755327.5A EP14755327A EP3039210B1 EP 3039210 B1 EP3039210 B1 EP 3039210B1 EP 14755327 A EP14755327 A EP 14755327A EP 3039210 B1 EP3039210 B1 EP 3039210B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foam body
- motor vehicle
- vehicle door
- piston
- foam
- 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.)
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Links
- 239000006260 foam Substances 0.000 claims description 78
- 239000000463 material Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000002984 plastic foam Substances 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/42—Means for damping the movement of lock parts, e.g. slowing down the return movement of a handle
Definitions
- the invention relates to a motor vehicle door lock, with at least one closing / adjusting element, and with an associated buffer unit of mostly a plastic foam for movement / noise damping of the closing / adjusting element.
- a motor vehicle door lock which is equipped with an end stop for the locking mechanism for limiting the overstroke of the catch when closing the locking mechanism.
- the stop is assigned a brake wedge for noise-reducing braking of the catch in the overstroke.
- the brake wedge itself is made of a noise-reducing material, eg. B. made of plastic. Nevertheless, with such plastic stops there is the danger that a so-called "opening bang" will occur.
- the further relevant prior art according to the DE 10 2010 012 896 A1 deals with an inlet buffer for motor vehicle door locks.
- the inlet buffer is made of a 2-component plastic, for example in the combination of polyurethane and polyoxymethylene.
- shocks when entering or inserting the lock holder should be substantially excluded.
- EP 2 154 317 A2 deals with a motion damper that is at least partially filled with a velocity-dependent material that makes a transition between a liquid and a solid state.
- Such an embodiment is relatively complex and expensive. This also applies, for the most part, to the previously described buffer units, which require special plastics manufacturing operations. This is increasingly disadvantageous in view of the enormous cost pressure.
- the invention aims to provide a total remedy.
- a front hood lock assembly comprising all features of the preamble of claim 1, comprising a displaceable first lock part and a buffer unit made largely of a plastic foam for damping the movement of the first lock part, wherein the buffer unit comprises at least two parts of a second piston acted upon by the first lock part Lock part and an interacting with the second lock part foam body is formed.
- the invention is based on the technical problem of developing such a motor vehicle door lock so that the production costs are low and possible synergy effects are used.
- a generic motor vehicle door lock is characterized in that the buffer unit is formed at least in two parts with an acted upon by the closing / actuator piston and interacting with the piston foam body.
- a two-part buffer unit is used. This is composed of the piston and the foam body.
- the piston is acted upon directly or indirectly by the closing / adjusting element as part of the motor vehicle door lock.
- the piston typically performs a linear motion in its longitudinal extent. This linear movement of the piston is damped by means of the foam body with which the piston interacts.
- the foam body and at least one seal are formed of the same material or are. That is, the invention is based in this context on the fact that motor vehicle door locks are equipped inter alia with at least one seal, which - like the foam body - are made of a plastic foam. Due to the fact that, on the one hand, the foam body and, on the other hand, the at least one seal are formed of the same material, the foam body and the gasket can be produced, as it were, together or in a matching production process and can be mounted in or on the motor vehicle door lock. In this way, separate manufacturing steps for the buffer unit are avoided and also different materials. Rather, the foam body for the Buffer unit on the one hand and the at least one seal in or on the motor vehicle door lock on the other hand from one and the same material and usually also produced in the course of one and the same manufacturing process.
- the production of seals made of plastic foam in motor vehicles is well known in this context, including on the DE 10 2007 018 792 B4 is pointed out. At this point, a hollow chamber seal is used, which is filled with an intumescent mass.
- the intumescent composition can be a one-component foam or a two-component foam. These can be produced, for example, based on polyurethane.
- the foam body and also the at least one seal can likewise be produced as a one-component foam or as a two-component polyurethane-based foam.
- a housing is used, which receives the piston and the foam body in its interior. The design is regularly made so that the piston closes the housing on an open side.
- the piston operates on the foam body regularly such that the piston compresses / relieves the foam body in accordance with a movement of the closing / adjusting element.
- the compression of the foam body corresponds to the fact that the piston exerts a pressure on the foam body.
- the counter-movement of the piston corresponds to a relief of the foam body. Since such a foam body generally has a certain relaxation behavior, in the context of the invention this does not expressly lead to the "opening bang" already mentioned. That is, in the case of the relief of the foam body in its relaxation after previous compression, this relaxation takes place relatively slowly or on large time scales, so that no excessive or abruptly increasing forces are exerted on the piston and consequently also the closing / adjusting element. Rather, a force curve rising slowly over time is to be expected.
- a first alternative of the invention corresponds to the fact that the piston compresses / relieves the foam body in accordance with the movement of the closing / adjusting element.
- a further second variant provides that the piston slides along the foam body when it is acted upon.
- a friction between piston and foam body is deliberately used for the movement / noise damping.
- the frictional force and thus also the motion / noise damping can be varied in this case.
- the foam body and / or the housing have at least one trapped air cushion.
- the at least one air cushion additionally acts as a movement / noise damping means.
- the damping and / or friction effect of the foam body can be adjusted on the production side and / or by applied or applied additives.
- the additives in question may be air bubbles or solid particles which vary the damping and / or friction effect of the foam body.
- the foam may be a one-component foam or a two-component foam and combinations.
- the foams are regularly based on polyurethane manufactured.
- the foam body may, for example, have a Shore hardness of about 40 to 60 Shore A. The design is usually made so that the foam is also designed temperature-curing, so that takes place by appropriate Temperaturbeetzwegung or generally ambient temperature of the desired curing process.
- a motor vehicle door closure which is equipped with a special motion / noise damping for one or more closing / adjusting elements.
- the closing / adjusting elements are not restrictive to the locking mechanism or components thereof.
- the buffer unit can also be used in an actuating lever mechanism, a locking lever mechanism, etc.
- the invention regularly accesses a two-part buffer unit in such a way that the closing / adjusting element to be damped with respect to its noise level or movement acts directly or indirectly on a piston.
- a motor vehicle door lock is shown.
- the motor vehicle door lock has at least one closing / adjusting element 1.
- the closing / adjusting element 1 is present and not restrictive to a rotary latch 1.
- With the rotary latch 1 interacts a pawl 2 in a conventional manner and forms a total locking mechanism. 1 2. That is, the rotary latch 1 is able to catch a locking pin, not explicitly shown, and to hold it in the closed position. This corresponds to the in the Fig. 1 illustrated main ratchet position.
- the rotary latch 1 can be converted in the exemplary embodiment in a Kochhub Scheme Ü.
- This Mathhub Scheme Ü corresponds to the fact that the catch 1 in the example shown in its closing movement about an associated axis of rotation 3 performs a movement in the indicated clockwise direction, the rotary latch 1 to beyond the Haupttrastposition after the Fig. 1 pivoted.
- an associated buffer unit 4, 5, 6 is provided in the Fig. 1 is hinted at and in detail in the FIGS. 2 and 3 is pictured.
- the buffer unit 4, 5, 6 is made of mostly a plastic foam for movement / noise damping of the closing / control element 1.
- the buffer unit 4, 5, 6 has at least two parts.
- the buffer unit 4, 5, 6 is composed of a piston 4 acted upon by the closing / adjusting element 1 on the one hand and a foamed body 5, 6 interacting with the piston 4 on the other hand.
- one or more air cushion 6 are additionally realized. The air cushion 6 in question are enclosed by the foam body 5, 6.
- the foam body 5, 6 and a seal on a housing, not shown, respectively, a lock case of the motor vehicle door lock are made of the same material as a rule.
- a one-component foam or a two-component foam is used.
- the foam in question is designed to cure and may cure at ambient temperatures.
- the seal on the one hand and the foam body 5, 6 on the other hand as part of the buffer unit 4, 5, 6 according to the invention can be made together and in one go, which enormously reduces the assembly and manufacturing costs.
- the seal and the foam body 5, 6 are designed the same material.
- both variants are available for the motion / noise damping of the closing / control element 1.
- both variants have in common that the piston 4 and the foam body 5 or 5, 6 are arranged in a common housing 7.
- the housing 7 in the exemplary embodiment is a channel or a channel-like structure with at least one opening or at least one open side 8.
- the air cushion 6 enclosed between the foam body 5 and the housing 7 is closed and can be compressed and relieved when the piston 4 corresponding to the closing / adjusting element 1 is charged.
- the piston 4 performs a predominantly linear movement in its longitudinal extent, which in the FIGS. 2 and 3 each indicated by a double arrow. This results in a compression / release of the foam body 5 and the foam body 5, 6 if you consider the air cushion 6 as part of the foam body 5. As a result, a different damping effect can be realized, which is initially due to a compression of the air cushion 6 and then a subsequent compression of the foam body 5 or may be due. So is the variant of the Fig. 2 proceed.
- the second option according to the variant Fig. 3 is characterized in that not the piston 4, the foam body 5 and 5, 6 in accordance with a movement of the closing / control element 1 is compressed / relieved, as the Fig. 2 represents. Rather, in the variant according to the Fig. 3 The procedure is such that the piston 4 slides along the foam body 5, 6 when it is acted upon or a movement of the closing / adjusting element 1 takes place. That is, the variant after the Fig. 3 deliberately uses a friction between the piston 4 and the foam body 5 or 5, 6.
- the foam body 5 or 5, 6 can interpret generally variable in terms of its damping and / or friction effect. This is ultimately achieved in such a way that the hardness or Shore A hardness of the foam body 5, 6 is varied with the aid of the manufacturing process and, if appropriate, by introduced or applied additives.
- the Shore A hardness of the foam body 5, 6 can be variably adjusted in a wide range, for example in the range of 20 to 80 for the Shore A hardness. In principle, even lower values than 20 down to 10 for the Shore A hardness are conceivable.
- the buffer unit 4, 5, 6 is in the example of the Fig. 1 used as Kochhubpuffer 4, 5, 6 of the catch 1.
- Such an overstroke buffer 4, 5, 6 is associated with the particular advantage that the foam body 5 or 5, 6 used has a pronounced relaxation behavior. That is, the foam body 5, 6 deforms when compressed by means of the piston 4 quasi-static and takes a considerable amount of time, typically up to a second or more, to take its original shape after discharge again.
- This specific relaxation behavior is used in the context of the invention in the application described as Kochhubpuffer 4, 5, 6 in that the voltage applied to the Kochhubpuffer 4, 5, 6 rotary latch 1 during the opening process of the associated locking mechanism 1, 2 easily from the relevant buffer unit 4, the fifth , 6 is released.
- the opening operation of the rotary latch 1 and the associated speed of the rotary latch 1 in the counterclockwise direction is many times greater than the relaxation rate of the buffer unit 4, 5, 6.
- the rotary latch 1 comes in the described opening operation directly from the buffer unit 4, 5th , 6 free, as a result of this, the rotary latch 1 is not (more) applied with force or exerts a possibly small force. This can be done open the catch 1 almost noiseless and it comes at this point not to the observed in the prior art "opening bang".
- the foam body 5, 6 can be variably adjusted with respect to its damping and / or friction effect.
- This variability can be realized for example by one or more air cushion 6.
- Another possibility is to the effect, for example, in the variant of the Fig. 3 the material thickness d of the lateral layer of the foam body 5 and thus to change the friction conditions between the foam body 5 or 5, 6 and the piston 4.
- the design is generally made such that the friction between the piston 4 on the one hand and the foam body 5 and 5, 6 on the other hand increases with increasing material thickness d, up to a material thickness d, the movement of the piston 4 is not or practically not (more) permits.
Landscapes
- Fluid-Damping Devices (AREA)
- Superstructure Of Vehicle (AREA)
- Lock And Its Accessories (AREA)
Description
Die Erfindung betrifft einen Kraftfahrzeugtürverschluss, mit zumindest einem Schließ-/Stellelement, und mit einer zugehörigen Puffereinheit aus größtenteils einem Kunststoff-Schaum zur Bewegungs-/Geräuschdämpfung des Schließ-/ Stellelementes.The invention relates to a motor vehicle door lock, with at least one closing / adjusting element, and with an associated buffer unit of mostly a plastic foam for movement / noise damping of the closing / adjusting element.
Die Bewegungs-/Geräuschdämpfung in Kraftfahrzeugtürverschlüssen nimmt aktuell und in der Zukunft einen immer größeren Raum ein. Dies ist letztlich der Tatsache geschuldet, dass die Kraftfahrzeuge sowohl im Hinblick auf die Innengeräusche als auch auf die Außengeräusche immer leiser werden, so dass zunehmend Geräusche in den Vordergrund treten, die in der Vergangenheit durch beispielsweise Motorgeräusche überdeckt wurden. Außerdem werden Zusatzfunktionen gefordert, wie beispielsweise ein Überhub eines obligatorischen Gesperres als Bestandteil des Kraftfahrzeugtürverschlusses. Durch einen solchen Überhub wird regelmäßig sichergestellt, dass die Sperrklinke einwandfrei mit der Drehfalle wechselwirken kann.The motion / noise damping in motor vehicle door locks is currently and in the future an ever-larger space. This is ultimately due to the fact that the vehicles are becoming quieter both in terms of interior noise and on the outside noise, so that more and more noise come to the fore, which were covered in the past by, for example, engine noises. In addition, additional functions are required, such as an overstroke of a compulsory locking mechanism as part of the motor vehicle door lock. Such an overrun regularly ensures that the pawl can properly interact with the rotary latch.
Im Stand der Technik nach der
Dieser Öffnungsknall resultiert im Kern daraus, dass der Überhubpuffer bzw. der Bremskeil im zuvor beschriebenen Fall die Drehfalle zumindest geringfügig verspannt. Sobald die Drehfalle geöffnet wird, löst sich diese Verspannung unter Erzeugung des zuvor bereits angesprochenen Öffnungsknalls. Jedenfalls treten gegebenenfalls unerwünschte Geräusche auf, die als störend betrachtet werden.This opening bang results in the core of the fact that the overstroke buffer or the brake wedge in the case described above, the catch at least slightly braced. Once the catch is opened, this tension dissolves creating the previously mentioned opening bang. In any case, undesirable noises occur, which are considered disturbing.
Der weitere einschlägige Stand der Technik nach der
Die schließlich noch zu nennende
Zudem ist aus der
Der Erfindung liegt das technische Problem zugrunde, einen derartigen Kraftfahrzeugtürverschluss so weiterzuentwickeln, dass die Herstellungskosten gering sind und möglichst Synergieeffekte genutzt werden.The invention is based on the technical problem of developing such a motor vehicle door lock so that the production costs are low and possible synergy effects are used.
Zur Lösung dieser technischen Problemstellung ist im Rahmen der Erfindung ein gattungsgemäßer Kraftfahrzeugtürverschluss dadurch gekennzeichnet, dass die Puffereinheit wenigstens zweiteilig mit einem vom Schließ-/Stellelement beaufschlagten Kolben und einem mit dem Kolben wechselwirkenden Schaumkörper ausgebildet ist.To solve this technical problem in the context of the invention, a generic motor vehicle door lock is characterized in that the buffer unit is formed at least in two parts with an acted upon by the closing / actuator piston and interacting with the piston foam body.
Im Rahmen der Erfindung kommt also zunächst einmal eine zweiteilige Puffereinheit zum Einsatz. Diese setzt sich aus dem Kolben und dem Schaumkörper zusammen. Der Kolben wird von dem Schließ-/Stellelement als Bestandteil des Kraftfahrzeugtürverschlusses mittelbar oder unmittelbar beaufschlagt. Als Folge hiervon führt der Kolben typischerweise eine Linearbewegung in seiner Längserstreckung aus. Diese Linearbewegung des Kolbens wird mit Hilfe des Schaumkörpers gedämpft, mit dem der Kolben wechselwirkt.In the context of the invention, therefore, initially a two-part buffer unit is used. This is composed of the piston and the foam body. The piston is acted upon directly or indirectly by the closing / adjusting element as part of the motor vehicle door lock. As a result, the piston typically performs a linear motion in its longitudinal extent. This linear movement of the piston is damped by means of the foam body with which the piston interacts.
Ein besonderer Synergieeffekt wird im Rahmen der Erfindung für den Fall beobachtet, dass der Schaumkörper und zumindest eine Dichtung materialeinheitlich ausgebildet sind oder werden. Das heißt, die Erfindung geht in diesem Kontext von der Tatsache aus, dass Kraftfahrzeugtürverschlüsse unter anderem mit wenigstens einer Dichtung ausgerüstet werden, die - wie der Schaumkörper - aus einem Kunststoffschaum hergestellt sind. Dadurch, dass einerseits der Schaumkörper und andererseits die wenigstens eine Dichtung materialeinheitlich ausgebildet werden, lassen sich Schaumkörper und Dichtung gleichsam gemeinsam bzw. in einem übereinstimmenden Herstellungsprozess produzieren und im oder am Kraftfahrzeugtürverschluss anbringen. Auf diese Weise werden separate Herstellungsschritte für die Puffereinheit vermieden und auch unterschiedliche Materialien. Vielmehr werden der Schaumkörper für die Puffereinheit einerseits und die zumindest eine Dichtung im oder am Kraftfahrzeugtürverschluss andererseits aus ein und demselben Material und meistens auch im Zuge ein und desselben Herstellungsvorganges produziert.A particular synergy effect is observed in the context of the invention for the case that the foam body and at least one seal are formed of the same material or are. That is, the invention is based in this context on the fact that motor vehicle door locks are equipped inter alia with at least one seal, which - like the foam body - are made of a plastic foam. Due to the fact that, on the one hand, the foam body and, on the other hand, the at least one seal are formed of the same material, the foam body and the gasket can be produced, as it were, together or in a matching production process and can be mounted in or on the motor vehicle door lock. In this way, separate manufacturing steps for the buffer unit are avoided and also different materials. Rather, the foam body for the Buffer unit on the one hand and the at least one seal in or on the motor vehicle door lock on the other hand from one and the same material and usually also produced in the course of one and the same manufacturing process.
Die Herstellung von Dichtungen aus Kunststoffschaum bei Kraftfahrzeugen ist in diesem Kontext wohl bekannt, wozu auf die
Im Rahmen der Erfindung kann der Schaumkörper und ebenso die wenigstens eine Dichtung ebenfalls als Einkomponenten-Schaumstoff oder auch als Zweikomponenten-Schaumstoff auf Polyurethan-Basis hergestellt sein. Dabei kommt meistens ein Gehäuse zum Einsatz, welches den Kolben und den Schaumkörper in seinem Innern aufnimmt. Dabei ist die Auslegung regelmäßig so getroffen, dass der Kolben das Gehäuse an einer offenen Seite verschließt. Außerdem arbeitet der Kolben auf den Schaumkörper regelmäßig derart, dass der Kolben den Schaumkörper nach Maßgabe einer Bewegung des Schließ-/ Stellelementes komprimiert/entlastet.In the context of the invention, the foam body and also the at least one seal can likewise be produced as a one-component foam or as a two-component polyurethane-based foam. In most cases, a housing is used, which receives the piston and the foam body in its interior. The design is regularly made so that the piston closes the housing on an open side. In addition, the piston operates on the foam body regularly such that the piston compresses / relieves the foam body in accordance with a movement of the closing / adjusting element.
Die Kompression des Schaumkörpers korrespondiert dazu, dass der Kolben einen Druck auf den Schaumkörper ausübt. Demgegenüber korrespondiert die Gegenbewegung des Kolbens zu einer Entlastung des Schaumkörpers. Da ein solcher Schaumkörper im Allgemeinen über ein bestimmtes Relaxationsverhalten verfügt, kommt es im Rahmen der Erfindung hierdurch ausdrücklich nicht zu dem bereits angesprochenen "Öffnungsknall". Das heißt, im Falle der Entlastung des Schaumkörpers bei dessen Relaxation nach vorheriger Kompression findet diese Relaxation relativ langsam bzw. auf großen Zeitskalen statt, so dass auf den Kolben und folglich auch das Schließ-/Stellelement keine übermäßigen oder schlagartig ansteigenden Kräfte ausgeübt werden. Vielmehr ist mit einer über die Zeit langsam ansteigenden Kraftkurve zu rechnen.The compression of the foam body corresponds to the fact that the piston exerts a pressure on the foam body. In contrast, the counter-movement of the piston corresponds to a relief of the foam body. Since such a foam body generally has a certain relaxation behavior, in the context of the invention this does not expressly lead to the "opening bang" already mentioned. That is, in the case of the relief of the foam body in its relaxation after previous compression, this relaxation takes place relatively slowly or on large time scales, so that no excessive or abruptly increasing forces are exerted on the piston and consequently also the closing / adjusting element. Rather, a force curve rising slowly over time is to be expected.
Wie bereits erläutert, korrespondiert eine erste Alternative der Erfindung dazu, dass der Kolben den Schaumkörper nach Maßgabe der Bewegung des Schließ-/Stellelementes komprimiert/entlastet. Eine weitere zweite Variante sieht so aus, dass der Kolben bei seiner Beaufschlagung am Schaumkörper entlanggleitet. In diesem Fall wird bewusst eine Reibung zwischen Kolben und Schaumkörper für die Bewegungs-/Geräuschdämpfung genutzt. Je nachdem, wie viel seitliche Kraft von dem Schaumkörper auf den Kolben beim Entlanggleiten an dem Schaumkörper ausgeübt wird, kann die Reibungskraft und damit auch die Bewegungs-/Geräuschdämpfung in diesem Fall variiert werden.As already explained, a first alternative of the invention corresponds to the fact that the piston compresses / relieves the foam body in accordance with the movement of the closing / adjusting element. A further second variant provides that the piston slides along the foam body when it is acted upon. In this case, a friction between piston and foam body is deliberately used for the movement / noise damping. Depending on how much lateral force is exerted by the foam body on the piston when sliding along the foam body, the frictional force and thus also the motion / noise damping can be varied in this case.
Eine weitere Variationsmöglichkeit besteht für den Fall, dass der Schaumkörper und/oder das Gehäuse wenigstens ein eingeschlossenes Luftpolster aufweisen. In diesem Fall fungiert das wenigstens eine Luftpolster zusätzlich als Bewegungs-/Geräuschdämpfungsmittel. Dadurch lässt sich der Schaumkörper insgesamt hinsichtlich seiner Dämpfungs- und/oder Reibungswirkung variabel auslegen.A further possibility of variation exists in the event that the foam body and / or the housing have at least one trapped air cushion. In this case, the at least one air cushion additionally acts as a movement / noise damping means. As a result, the foam body as a whole can be interpreted variably in terms of its damping and / or friction effect.
Tatsächlich kann die Dämpfungs- und/oder Reibungswirkung des Schaumkörpers herstellungsseitig und/oder durch ein- oder aufgebrachte Zusatzmittel eingestellt werden. Bei den fraglichen Zusatzmitteln mag es sich um Luftblasen oder auch Festkörperpartikel handeln, die die Dämpfungs- und/oder Reibungswirkung des Schaumkörpers variieren.In fact, the damping and / or friction effect of the foam body can be adjusted on the production side and / or by applied or applied additives. The additives in question may be air bubbles or solid particles which vary the damping and / or friction effect of the foam body.
Wie zuvor bereits erläutert, kann es sich bei dem Schaum um einen Einkomponenten-Schaumstoff oder auch einen Zweikomponenten-Schaumstoff sowie Kombinationen handeln. Die Schaumstoffe sind regelmäßig auf Polyurethan-Basis hergestellt. Außerdem mag der Schaumkörper beispielsweise über eine Shore-Härte von ca. 40 bis 60 Shore A verfügen. Dabei ist die Auslegung meistens so getroffen, dass der Schaum darüber hinaus temperaturaushärtend ausgelegt ist, so dass durch entsprechende Temperaturbeaufschlagung oder allgemein Umgebungstemperatur der gewünschte Aushärtungsvorgang stattfindet.As previously explained, the foam may be a one-component foam or a two-component foam and combinations. The foams are regularly based on polyurethane manufactured. In addition, the foam body may, for example, have a Shore hardness of about 40 to 60 Shore A. The design is usually made so that the foam is also designed temperature-curing, so that takes place by appropriate Temperaturbeaufschlagung or generally ambient temperature of the desired curing process.
Im Ergebnis wird ein Kraftfahrzeugtürverschluss zur Verfügung gestellt, der mit einer speziellen Bewegungs-/Geräuschdämpfung für ein oder mehrere Schließ-/ Stellelemente ausgerüstet ist. Bei den Schließ-/Stellelementen handelt es sich nicht einschränkend um das Gesperre bzw. Bestandteile desselben. Grundsätzlich kann die Puffereinheit aber auch bei einem Betätigungshebelwerk, einem Verriegelungshebelwerk etc. zum Einsatz kommen. Dabei greift die Erfindung regelmäßig auf eine zweiteilige Puffereinheit derart zurück, dass das hinsichtlich seiner Geräuschentwicklung bzw. Bewegung zu dämpfende Schließ-/ Stellelement einen Kolben mittelbar oder unmittelbar beaufschlagt.As a result, a motor vehicle door closure is provided, which is equipped with a special motion / noise damping for one or more closing / adjusting elements. The closing / adjusting elements are not restrictive to the locking mechanism or components thereof. In principle, however, the buffer unit can also be used in an actuating lever mechanism, a locking lever mechanism, etc. In this case, the invention regularly accesses a two-part buffer unit in such a way that the closing / adjusting element to be damped with respect to its noise level or movement acts directly or indirectly on a piston.
Infolge der Beaufschlagung des Kolbens mit Hilfe des Schließ-/Stellelementes wird dessen Bewegung und auch Geräuschentwicklung gedämpft. Denn der Kolben wechselwirkt mit dem Schaumkörper. Dabei wird der Schaumkörper entweder komprimiert/entlastet oder übt durch den am Schaumkörper entlanggleitenden Kolben entsprechende Reibungskräfte aus.As a result of the loading of the piston by means of the closing / adjusting element whose movement and noise is attenuated. Because the piston interacts with the foam body. In this case, the foam body is either compressed / relieved or exercises by the sliding along the foam body piston corresponding frictional forces.
Das alles gelingt unter Berücksichtung eines besonders einfachen und kostengünstigen Aufbaus. Denn die Erfindung macht sich den Umstand zu Nutze, dass typischerweise eine oder mehrere Dichtungen bei einem solchen Kraftfahrzeugtürverschluss ebenfalls aus Kunststoffschaum hergestellt werden. Dadurch lassen sich der Schaumkörper einerseits und die zumindest eine Dichtung andererseits materialeinheitlich ausbilden. Außerdem besteht hierdurch die weitere Möglichkeit, die Herstellung der Dichtung und diejenige des Schaumkörpers für die erfindungsgemäße Puffereinheit in einem Zug durchzuführen. Dadurch werden besondere Synergieeffekte erreicht und insgesamt die Herstellungs- und Montagekosten gegenüber bisherigen Vorgehensweisen verringert. Hierin sind die wesentlichen Vorteile zu sehen.All of this succeeds considering a particularly simple and inexpensive construction. For the invention takes advantage of the fact that typically one or more seals in such a motor vehicle door lock are also made of plastic foam. As a result, the foam body on the one hand and the at least one seal on the other hand can be formed of the same material. In addition, there is the further possibility of the production of the seal and that of the To perform foam body for the buffer unit according to the invention in one go. As a result, special synergy effects are achieved and overall the manufacturing and assembly costs are reduced compared to previous approaches. Here are the main benefits.
Im Folgenden wird die Erfindung anhand lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert; es zeigen:
- Fig. 1
- einen erfindungsgemäßen Kraftfahrzeugtürverschluss reduziert auf die für die Erfindung wesentlichen Bauteile und
- Fig. 2 und 3
- zwei unterschiedliche Varianten der an dieser Stelle eingesetzten Puffereinheit.
- Fig. 1
- a motor vehicle door lock according to the invention reduced to the components essential for the invention and
- FIGS. 2 and 3
- two different variants of the buffer unit used at this point.
In den Figuren ist ein Kraftfahrzeugtürverschluss dargestellt. Der Kraftfahrzeugtürverschluss verfügt über wenigstens ein Schließ-/Stellelement 1. Bei dem Schließ-/Stellelement 1 handelt es sich vorliegend und nicht einschränkend um eine Drehfalle 1. Mit der Drehfalle 1 wechselwirkt eine Sperrklinke 2 in üblicher Art und Weise und bildet insgesamt ein Gesperre 1, 2. Das heißt, die Drehfalle 1 ist in der Lage, einen nicht ausdrücklich dargestellten Schließbolzen zu fangen und in geschlossener Position festzuhalten. Hierzu korrespondiert die in der
Damit die in der
Die Puffereinheit 4, 5, 6 ist aus größtenteils einem Kunststoffschaum zur Bewegungs-/Geräuschdämpfung des Schließ-/Stellelementes 1 hergestellt. Zu diesem Zweck verfügt die Puffereinheit 4, 5, 6 über wenigstens zwei Teile. Erfindungsgemäß setzt sich die Puffereinheit 4, 5, 6 aus einem vom Schließ-/ Stellelement 1 beaufschlagten Kolben 4 einerseits und einem mit dem Kolben 4 wechselwirkenden Schaumkörper 5, 6 andererseits zusammen. Im Rahmen des Ausführungsbeispiels sind zusätzlich noch ein oder mehrere Luftpolster 6 realisiert. Die fraglichen Luftpolster 6 werden vom Schaumkörper 5, 6 umschlossen.The
Der Schaumkörper 5, 6 und eine Dichtung an einem nicht dargestellten Gehäuse respektive einem Schlosskasten des Kraftfahrzeugtürverschlusses werden im Regelfall materialeinheitlich hergestellt. Dabei kommt typischerweise ein Einkomponenten-Schaumstoff oder auch ein Zweikomponenten-Schaumstoff zum Einsatz. Der fragliche Schaumstoff ist temperaturaushärtend ausgelegt und mag bei Umgebungstemperaturen aushärten. Dadurch können die Dichtung einerseits und der Schaumkörper 5, 6 andererseits als Bestandteil der erfindungsgemäßen Puffereinheit 4, 5, 6 zusammen und in einem Zug hergestellt werden, was den montage- und herstellungsbedingten Aufwand enorm verringert. Außerdem sind die Dichtung und der Schaumkörper 5, 6 materialeinheitlich ausgelegt.The foam body 5, 6 and a seal on a housing, not shown, respectively, a lock case of the motor vehicle door lock are made of the same material as a rule. Typically, a one-component foam or a two-component foam is used. The foam in question is designed to cure and may cure at ambient temperatures. As a result, the seal on the one hand and the foam body 5, 6 on the other hand as part of the
Für die Bewegungs-/Geräuschdämpfung des Schließ-/Stellelementes 1 stehen erfindungsgemäß zwei verschiedene Varianten zur Auswahl. So ist beiden Varianten zunächst einmal gemein, dass der Kolben 4 und der Schaumkörper 5 bzw. 5, 6 in einem gemeinsamen Gehäuse 7 angeordnet werden. Bei dem Gehäuse 7 handelt es sich im Ausführungsbeispiel um einen Kanal respektive ein kanalartiges Gebilde mit wenigstens einer Öffnung respektive wenigstens einer offenen Seite 8.According to the invention, two different variants are available for the motion / noise damping of the closing / control element 1. Thus, for the time being, both variants have in common that the
Im Rahmen der Variante nach der
Tatsächlich vollführt der Kolben 4 eine überwiegend lineare Bewegung in seiner Längserstreckung, die in den
Die weitere zweite Möglichkeit entsprechend der Variante nach
Dabei lässt sich der Schaumkörper 5 bzw. 5, 6 generell hinsichtlich seiner Dämpfungs- und/oder Reibungswirkung variabel auslegen. Das gelingt letztlich in der Weise, dass mit Hilfe des Herstellungsvorganges sowie gegebenenfalls durch eingebrachte oder aufgebrachte Zusatzmittel die Härte bzw. Shore-A-Härte des Schaumkörpers 5, 6 variiert wird. Tatsächlich lässt sich die Shore-A-Härte des Schaumkörpers 5, 6 in einem weiten Bereich variabel einstellen, beispielsweise im Bereich von 20 bis 80 für die Shore-A-Härte. Grundsätzlich sind sogar auch geringere Werte als 20 bis hinunter zu 10 für die Shore-A-Härte denkbar.In this case, the foam body 5 or 5, 6 can interpret generally variable in terms of its damping and / or friction effect. This is ultimately achieved in such a way that the hardness or Shore A hardness of the foam body 5, 6 is varied with the aid of the manufacturing process and, if appropriate, by introduced or applied additives. In fact, the Shore A hardness of the foam body 5, 6 can be variably adjusted in a wide range, for example in the range of 20 to 80 for the Shore A hardness. In principle, even lower values than 20 down to 10 for the Shore A hardness are conceivable.
Die Puffereinheit 4, 5, 6 nach der Erfindung wird im Beispielfall der
Das heißt, der Öffnungsvorgang der Drehfalle 1 und die damit verbundene Geschwindigkeit der Drehfalle 1 im Gegenuhrzeigersinn ist um ein Vielfaches größer als die Relaxationsgeschwindigkeit der Puffereinheit 4, 5, 6. Dadurch kommt die Drehfalle 1 bei dem beschriebenen Öffnungsvorgang unmittelbar von der Puffereinheit 4, 5, 6 frei, die als Folge hiervon die Drehfalle 1 nicht (mehr) mit Kraft beaufschlagt oder eine allenfalls geringe Kraft ausübt. Dadurch lässt sich die Drehfalle 1 nahezu geräuschlos öffnen und kommt es an dieser Stelle nicht zu dem im Stand der Technik beobachteten "Öffnungsknall".That is, the opening operation of the rotary latch 1 and the associated speed of the rotary latch 1 in the counterclockwise direction is many times greater than the relaxation rate of the
Hinzu kommt, dass der Schaumkörper 5, 6 hinsichtlich seiner Dämpfungs- und/ oder Reibungswirkung variabel eingestellt werden kann. Diese Variabilität lässt sich beispielsweise durch ein oder mehrere Luftpolster 6 realisieren. Eine weitere Möglichkeit besteht dahingehend, beispielsweise bei der Variante nach der
Claims (9)
- Motor vehicle door latch, with at least one closing/actuator element (1), and with an associated buffer unit (4, 5, 6) consisting mostly of a plastic foam to dampen the movement/noise of the closing/actuator element (1), whereby the buffer unit (4, 5, 6) is made up of at least two parts with a piston (4) acted upon by the closing/actuator element (1) and a foam body (5, 6) that interacts with the piston (4), characterized in that the foam body (5, 6) and at least one gasket are made of the same material.
- Motor vehicle door latch according to claim 1, characterized in that the piston (4) compresses/relieves the foam body (5, 6) subject to movement from the closing/actuator element (1).
- Motor vehicle door latch according to one of the claims 1 to 2, characterized in that the piston (4) slides along the foam body (5, 6) when acted upon.
- Motor vehicle door latch according to one of the claims 1 to 3, characterized in that the piston (4) and foam body (5, 6) are arranged in a housing (7).
- Motor vehicle door latch according to one of the claims 1 to 4, characterized in that the foam body (5, 6) and/or the housing (7) demonstrate at least one enclosed air cushion (6).
- Motor vehicle door latch according to one of the claims 1 to 5, characterized in that the design of the foam body (5, 6) is variable with regards to its dampening and/or friction effect.
- Motor vehicle door latch according to one of the claims 1 to 6, characterized in that the dampening and/or friction effect of the foam body (5, 6) is adjusted at the manufacturing stage and/or by additives that are applied into or onto it.
- Motor vehicle door latch in accordance with one of the claims 1 to 7, characterized in that the foam body (5, 6) is manufactured from a two-component foam.
- Motor vehicle door latch in accordance with one of the claims 1 to 8, characterized in that the foam body (5, 6) hardens dependent on the temperature.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013014556.2A DE102013014556A1 (en) | 2013-08-31 | 2013-08-31 | Motor vehicle door lock |
PCT/DE2014/100259 WO2015027986A1 (en) | 2013-08-31 | 2014-07-15 | Motor vehicle door closure |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3039210A1 EP3039210A1 (en) | 2016-07-06 |
EP3039210B1 true EP3039210B1 (en) | 2019-06-05 |
Family
ID=51398471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14755327.5A Active EP3039210B1 (en) | 2013-08-31 | 2014-07-15 | Motor vehicle door closure |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3039210B1 (en) |
DE (2) | DE102013014556A1 (en) |
WO (1) | WO2015027986A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016102202A1 (en) * | 2016-02-09 | 2017-08-10 | Kiekert Ag | MOTOR VEHICLE LOCK |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1324726C (en) * | 1988-09-26 | 1993-11-30 | Yoshikazu Hamada | Noise suppressing device in lock device for vehicle |
DE4318544C1 (en) * | 1993-06-04 | 1994-05-05 | Bayerische Motoren Werke Ag | Motor vehicle door-lock with rotary catch - has pre-loaded seal generating resistance to delay unlocking |
DE19948800A1 (en) * | 1999-10-11 | 2001-05-23 | Bernhard Hebel | Hatch motion damper with locking function for use in vehicle has cylinder, piston, and piston rod with overflow aperture which is regulated by valve |
DE19957868A1 (en) * | 1999-12-01 | 2001-06-07 | Volkswagen Ag | Safety unit on motor vehicle to protect pedestrians has two-section support element consisting of first section fixed to body of vehicle and second section movable relative to first section via sliding guide arrangement |
DE102005007433A1 (en) | 2004-08-27 | 2006-03-02 | Kiekert Ag | Motor vehicle door lock |
DE102006006443A1 (en) * | 2006-02-10 | 2007-08-23 | Kiekert Ag | Motor vehicle door lock |
DE102007007941A1 (en) * | 2007-02-17 | 2008-08-21 | Daimler Ag | Locking device for e.g. door of passenger car, has catch, at which locking tab is integrally formed, and damping elements provided for damping movement of catch from locking position into release position with higher acceleration force |
DE102007018792B4 (en) | 2007-04-20 | 2009-12-31 | Metzeler Automotive Profile Systems Gmbh | Method for producing a seal and device for producing a seal |
US8196975B2 (en) * | 2007-08-14 | 2012-06-12 | Magna Closures Inc | Safety device for vehicle door latch systems |
DE102010012896A1 (en) | 2010-03-26 | 2011-09-29 | Kiekert Ag | Lock for e.g. motor car door, has intake buffer including U-shaped clamp-like section formed as single piece and two component buffer, where U-shaped clamp-like section forms contour surface at lock holder |
-
2013
- 2013-08-31 DE DE102013014556.2A patent/DE102013014556A1/en not_active Withdrawn
-
2014
- 2014-07-15 DE DE112014003977.2T patent/DE112014003977A5/en not_active Withdrawn
- 2014-07-15 EP EP14755327.5A patent/EP3039210B1/en active Active
- 2014-07-15 WO PCT/DE2014/100259 patent/WO2015027986A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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WO2015027986A1 (en) | 2015-03-05 |
DE112014003977A5 (en) | 2016-06-09 |
EP3039210A1 (en) | 2016-07-06 |
DE102013014556A1 (en) | 2015-03-05 |
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