EP0233506B1 - Motor vehicle door lock - Google Patents

Motor vehicle door lock Download PDF

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Publication number
EP0233506B1
EP0233506B1 EP87100905A EP87100905A EP0233506B1 EP 0233506 B1 EP0233506 B1 EP 0233506B1 EP 87100905 A EP87100905 A EP 87100905A EP 87100905 A EP87100905 A EP 87100905A EP 0233506 B1 EP0233506 B1 EP 0233506B1
Authority
EP
European Patent Office
Prior art keywords
fork
vehicle door
motor vehicle
coating
latch
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.)
Expired
Application number
EP87100905A
Other languages
German (de)
French (fr)
Other versions
EP0233506A3 (en
EP0233506A2 (en
Inventor
Christoph Dipl.-Ing. Schlegel
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Publication of EP0233506A2 publication Critical patent/EP0233506A2/en
Publication of EP0233506A3 publication Critical patent/EP0233506A3/en
Application granted granted Critical
Publication of EP0233506B1 publication Critical patent/EP0233506B1/en
Expired legal-status Critical Current

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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
    • E05B77/36—Noise prevention; Anti-rattling means
    • E05B77/40—Lock elements covered by silencing layers, e.g. coatings
    • 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
    • E05B85/20—Bolts or detents
    • E05B85/24—Bolts rotating about an axis
    • E05B85/26—Cooperation between bolts and detents
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/38—Plastic latch parts
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/56—Silencers
    • 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
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure
    • 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
    • Y10T292/688—With silencing or anti-rattle means

Definitions

  • the invention relates to a motor vehicle door lock, consisting essentially of a fork latch, a pawl and a cylindrical locking bolt with a larger locking bolt head in cross-section, wherein a fork opening of the fork latch includes the locking bolt and the fork latch has a particularly noise-absorbing coating on its surface.
  • Generic motor vehicle door locks are well known in the art, e.g. from DE-A 2 320 351.
  • the applicant also uses devices designed in this way for closing the side vehicle doors.
  • the fork latch has a plastic coating over almost its entire surface, but this must also have corresponding strength properties so that the correct locking of the door is ensured.
  • the coating of the fork latch must be demanded that it can withstand the loads permanently even with a large surface pressure acting on it. Not only is a secure locking in the closing direction required, but it is also necessary that the fork latch / locking bolt connection can also absorb forces directed vertically thereon. These can occur in particular as a result of a side collision deforming the vehicle door.
  • One of the end faces of the fork latch comes into surface-pressing contact with the locking bolt head in the region of the fork opening.
  • a motor vehicle door lock is proposed, as can be found in the features of claim 1.
  • the procedure according to the invention always ensures that the forces occurring can be absorbed by metallic areas of the rotary latch. This applies in an advantageous manner both in the so-called pre-locking position and in the actual main locking position.
  • the noise-damping effect is in no way impaired, since the slightly bulged portions of the coating compound in the area of the fork opening reliably prevent direct purely metallic contact between the locking bolt and the rotary latch.
  • the procedure according to the invention now also gives the possibility of choosing a material with somewhat lower strength properties and thus higher noise damping properties than is customary in the prior art for the coating.
  • the motor vehicle door lock shown in FIG. 1 has, as essential components in the context of the invention, a pawl (1), a locking bolt (2) and a fork latch (5) consisting essentially of a latching leg (3) and a main latching leg (4).
  • Pawl (1) and fork latch (5) are components of a door lock housing (30) located on the vehicle door and are moved accordingly when the vehicle door is moved.
  • the locking bolt (2) itself which also has a locking bolt head (6) ( Figure 2), is attached to the vehicle body, for example on the door spar (29).
  • the locking pin (2) engages in a fork opening (8) of the fork latch (5) and turns the latter counterclockwise and against the spring force of a return spring (32) its axis of rotation (9).
  • the fork latch (5) was previously in a position (shown in dash-dot lines) in which the fork opening (8) was aligned with a housing opening (31) in the door lock housing (30) and could thus accommodate the locking bolt (2).
  • the pawl (1) loaded by a spring (10) can engage behind the pre-locking leg (3) and thereby already prevent the vehicle door from being opened unintentionally.
  • the pawl (1) can ultimately engage behind the main notch leg (4), so that the final closed position is reached.
  • the pawl (1) rotates about its axis of rotation (11).
  • a coating (22) which is preferably made of plastic, for example polyester Ela is stomeric and, in addition to good noise-damping properties, has the required strength properties, in particular with regard to surface pressures that occur.
  • the fork opening (8) has alternatingly coated and uncoated sections (14 and 15) in its area surrounding the locking bolt (2) and in contact with it.
  • the coating (22) is embedded in corresponding depressions (33) in the metallic fork latch core (18).
  • the coated sections (14) project beyond the contour, i. H. the imaginary circular line (16) of the fork opening (8) as slightly bulging elevations (17). This allows them to develop their additional noise-damping effect during the entire movement sequence of the closing process.

Description

Die Erfindung bezieht sich auf einen Kraftfahrzeugtürverschluß, im wesentlichen bestehend aus einer Gabelfalle, einer Sperrklinke sowie einem zylindrischen Schließbolzen mit einem im Querschnitt größeren Schließbolzenkopf, wobei eine Gabelöffnung der Gabelfalle den Schließbolzen umfaßt und die Gabelfalle auf ihrer Oberfläche eine insbesondere geräuschdämpfende Beschichtung aufweist.The invention relates to a motor vehicle door lock, consisting essentially of a fork latch, a pawl and a cylindrical locking bolt with a larger locking bolt head in cross-section, wherein a fork opening of the fork latch includes the locking bolt and the fork latch has a particularly noise-absorbing coating on its surface.

Gattungsgemäße Kraftfahrzeugtürverschlüsse sind im Stand der Technik hinreichend bekannt, z.B. aus der DE-A 2 320 351. Auch die Anmelderin verwendet derart gestaltete Einrichtungen zum Verschließen der seitlichen Fahrzeugtüren. Insbesondere zum Zwecke der Geräuschdämpfung beim Zusammenwirken der Bauteile Gabelfalle, Sperrklinke und Schließbolzen während des Schließvorganges weist die Gabelfalle über nahezu ihre gesamte Oberfläche eine Kunststoffbeschichtung auf, die aber auch entsprechende Festigkeitseigenschaften aufweisen muß, damit die ordnungsgemäße Verriegelung der Tür sichergestellt ist.Generic motor vehicle door locks are well known in the art, e.g. from DE-A 2 320 351. The applicant also uses devices designed in this way for closing the side vehicle doors. Especially for the purpose of noise reduction when the components of the fork latch, pawl and locking bolt interact during the closing process, the fork latch has a plastic coating over almost its entire surface, but this must also have corresponding strength properties so that the correct locking of the door is ensured.

Ublich ist auch, ergänzend hierzu oder stattdessen den Schließbolzen im Kontaktbereich mit der Gabelfalle mit einer Kunststoffbeschichtung zu versehen (DE-PS 3 131 119). Dabei hat sich aber gezeigt, daß diese meist sehr schnell verschleißt und die ihr zugedachte Funktion nicht mehr ordnungsgemäß erfüllen kann.It is also customary, in addition to this or instead, to provide the locking bolt in the contact area with the fork latch with a plastic coating (DE-PS 3 131 119). However, it has been shown that this usually wears out very quickly and can no longer properly perform the function intended for it.

Aufgrund der gegebenen hohen Sicherheitsanforderungen an den Verriegelungsmechanismus ist gerade von der Beschichtung der Gabelfalle zu fordern, daß diese auch bei großer auf sie einwirkender Flächenpressung den Belastungen dauerhaft Stand halten kann. Dabei ist nicht nur eine sichere Verriegelung in Schließrichtung gefordert, sondern es ist auch erforderlich, daß die Verbindung Gabelfalle/Schließbolzen auch senkrecht darauf gerichtete Kräfte aufnehmen kann. Diese können insbesondere infolge eines die Fahrzeugtür verformenden, seitlichen Zusammenstoßes auftreten. Dabei kommt eine der Stirnflächen der Gabelfalle im Bereich der Gabelöffnung mit dem Schließbolzenkopf in flächenpressende Berührung.Due to the given high safety requirements for the locking mechanism, the coating of the fork latch must be demanded that it can withstand the loads permanently even with a large surface pressure acting on it. Not only is a secure locking in the closing direction required, but it is also necessary that the fork latch / locking bolt connection can also absorb forces directed vertically thereon. These can occur in particular as a result of a side collision deforming the vehicle door. One of the end faces of the fork latch comes into surface-pressing contact with the locking bolt head in the region of the fork opening.

Aber gerade hier liegt ein Schwachpunkt bei der Verbindung, da nahezu ausschließlich die elastische Beschichtungsmasse mit der relativ kleinen Anlagefläche des Schließbolzenkopfes in Kontakt kommt und nicht in der Lage ist, die auftretenden Kräfte aufzufangen.But this is precisely where the connection is weak, since the elastic coating mass comes into contact almost exclusively with the relatively small contact surface of the locking bolt head and is not able to absorb the forces that occur.

Davon ausgehend ist es die Aufgabe der vorliegenden Erfindung, einen Kraftfahrzeugtürverschluß hervorzubringen, der einerseits einen geräuscharmen Schließvorgang gewährleistet und andererseits nicht nur in Schließrichtung sondern auch quer zu dieser ein Höchstmaß an Haltekräften übertragen kann.Proceeding from this, it is the object of the present invention to produce a motor vehicle door lock which, on the one hand, ensures a low-noise closing process and, on the other hand, can transmit a maximum of holding forces not only in the closing direction but also transversely to it.

Zur Lösung dieser Aufgabe wird ein Kraftfahrzeugtürverschluß vorgeschlagen, wie er den Merkmalen des Patentanspruches 1 entnommen werden kann. Durch die erfindungsgemäße Vorgehensweise ist stets erreicht, daß die auftretenden Kräfte von metallischen Bereichen der Drehfalle aufgenommen werden können. Dies gilt in vorteilhafter Weise sowohl in der sogenannten Vorraststellung als auch in der eigentlichen Hauptraststellung. Die geräuschdämpfende Wirkung wird in keiner Weise beeinträchtigt, da gerade durch die leicht bauchig ausgebildeten Abschnitte der Beschichtungsmasse im Bereich der Gabelöffnung ein unmittelbar rein metallischer Kontakt zwischen Schließbolzen und Drehfalle sicher verhindert wird. Es ist durch die Vorgehensweise gemäß der Erfindung nun auch die Möglichkeit gegeben, für die Beschichtung einen Werkstoff mit etwas geringeren Festigkeitseigenschaften und somit höheren Geräuschdämpfungseigenschaften als im Stand der Technik üblich zu wählen.To solve this problem, a motor vehicle door lock is proposed, as can be found in the features of claim 1. The procedure according to the invention always ensures that the forces occurring can be absorbed by metallic areas of the rotary latch. This applies in an advantageous manner both in the so-called pre-locking position and in the actual main locking position. The noise-damping effect is in no way impaired, since the slightly bulged portions of the coating compound in the area of the fork opening reliably prevent direct purely metallic contact between the locking bolt and the rotary latch. The procedure according to the invention now also gives the possibility of choosing a material with somewhat lower strength properties and thus higher noise damping properties than is customary in the prior art for the coating.

Die Erfindung ist nachstehend anhand eines Ausführungsbeispieles beschrieben und in der Zeichnung dargestellt. Diese zeigt dabei in

  • Figur 1 einen Kraftfahrzeugtürverschluß mit den wesentlichen Bauteilen und der erfindungsgemäß ausgestatteten Gabelfalle,
  • Figur 2 einen Schnitt gemäß Pfeile 2 in Figur 1 und
  • Figur 3 eine vergrößerte Darstellung der Gabelfalle.
The invention is described below using an exemplary embodiment and shown in the drawing. This shows in
  • FIG. 1 a motor vehicle door lock with the essential components and the fork latch equipped according to the invention,
  • Figure 2 shows a section according to arrows 2 in Figure 1 and
  • Figure 3 is an enlarged view of the fork latch.

Der in Figur 1 dargestellte Kraftfahrzeugtürverschluß weist als im Rahmen der Erfindung wesentliche Bauteile eine Sperrklinke (1), einen Schließbolzen (2) sowie eine, im wesentlichen aus Vorrastschenkel (3) und Hauptrastschenkel (4) bestehende Gabelfalle (5) auf. Sperrklinke (1) und Gabelfalle (5) sind dabei Bestandteile eines an der Fahrzeugtür sich befindenden Türverschlußgehäuses (30) und werden beim Bewegen der Fahrzeugtür entsprechend mitbewegt. Der Schließbolzen (2) selbst, der außerdem einen Schließbolzenkopf (6) (Figur 2) aufweist, ist an der Fahrzeugkarosserie, beispielsweise am Türholm (29) befestigt. Beim Bewegen von Fahrzeugtür mit Türverschlußgehäuse (30) in Schließrichtung (Pfeil 7) greift der Schließbolzen (2) in eine Gabelöffnung (8) der Gabelfalle (5) ein und dreht dabei letztere entgegen dem Uhrzeigersinn und gegen die Federkraft einer Rückstellfeder (32) um ihre Drehachse (9). Die Gabelfalle (5) war zuvor in einer Stellung (strichpunktiert dargestellt), in der die Gabelöffnung (8) entsprechend einer Gehäuseöffnung (31) des Türverschlußgehäuses (30) gerichtet war, und so den Schließbolzen (2) aufnehmen konnte. In einer sogenannten "Vorraststellung" kann die durch eine Feder (10) belastete Sperrklinke (1) hinter dem Vorrastschenkel (3) einfallen und dadurch bereits jetzt ein unbeabsichtigtes Öffnen der Fahrzeugtür verhindern. Wird letztere weiter in Schließrichtung bewegt und damit die Gabelfalle (5) weiter um ihre Drehachse (9) gedreht, so kann letztendlich die Sperrklinke (1) hinter dem Hauptrastschenkel (4) einfallen, so daß die endgültige Schließstellung erreicht ist. Die Sperrklinke (1) dreht sich dabei um ihre Drehachse (11).The motor vehicle door lock shown in FIG. 1 has, as essential components in the context of the invention, a pawl (1), a locking bolt (2) and a fork latch (5) consisting essentially of a latching leg (3) and a main latching leg (4). Pawl (1) and fork latch (5) are components of a door lock housing (30) located on the vehicle door and are moved accordingly when the vehicle door is moved. The locking bolt (2) itself, which also has a locking bolt head (6) (Figure 2), is attached to the vehicle body, for example on the door spar (29). When moving the vehicle door with the door lock housing (30) in the closing direction (arrow 7), the locking pin (2) engages in a fork opening (8) of the fork latch (5) and turns the latter counterclockwise and against the spring force of a return spring (32) its axis of rotation (9). The fork latch (5) was previously in a position (shown in dash-dot lines) in which the fork opening (8) was aligned with a housing opening (31) in the door lock housing (30) and could thus accommodate the locking bolt (2). In a so-called "pre-locking position", the pawl (1) loaded by a spring (10) can engage behind the pre-locking leg (3) and thereby already prevent the vehicle door from being opened unintentionally. If the latter is moved further in the closing direction and thus the fork latch (5) is rotated further about its axis of rotation (9), the pawl (1) can ultimately engage behind the main notch leg (4), so that the final closed position is reached. The pawl (1) rotates about its axis of rotation (11).

Ausgenommen an ihren Anlagestellen (12, 13) mit der entsprechend geformten Sperrklinke (1) ist nahezu die gesamte Oberfläche der Gabelfalle (5) mit einer Beschichtung (22) versehen, die vorzugsweise aus Kunststoff, beispielsweise Polyester-Elastomer ausgeführt ist und neben guten geräuschdämpfenden Eigenschaften den Erfordernissen genügende Festigkeitseigenschaften, insbesondere hinsichtlich auftretender Flächenpressungen, besitzt.Except at their contact points (12, 13) with the correspondingly shaped pawl (1), almost the entire surface of the fork latch (5) is provided with a coating (22), which is preferably made of plastic, for example polyester Ela is stomeric and, in addition to good noise-damping properties, has the required strength properties, in particular with regard to surface pressures that occur.

Die Gabelöffnung (8) weist in ihrem, den Schließbolzen (2) umfassenden und mit diesem in Kontakt stehenden Bereich abwechselnd beschichtete und unbeschichtete Abschnitte (14 bzw. 15) auf. Die Beschichtung (22) ist dabei in entsprechende Vertiefungen (33) des metallischen Gabelfallenkernes (18) eingebettet. Wie Figur 1 entnommen werden kann, überragen die beschichteten Abschnitte (14) die Kontur, d. h. die gedachte Kreislinie (16) der Gabelöffnung (8) als leicht bauchige Erhebungen (17). Damit können diese während des gesamten Bewegungsablaufes des Schließvorganges ihre zusätzlich geräuschdämpfende Wirkung entfalten.The fork opening (8) has alternatingly coated and uncoated sections (14 and 15) in its area surrounding the locking bolt (2) and in contact with it. The coating (22) is embedded in corresponding depressions (33) in the metallic fork latch core (18). As can be seen in FIG. 1, the coated sections (14) project beyond the contour, i. H. the imaginary circular line (16) of the fork opening (8) as slightly bulging elevations (17). This allows them to develop their additional noise-damping effect during the entire movement sequence of the closing process.

Wie der Schnittdarstellung nach Figur 2 entnommen werden kann, werden bei auftretenden Querkräften (Pfeil 19) diese von der inneren Stirnfläche (20) des Schließbolzenkopfes (6) aufgenommen, an die die entsprechend zugewandte Stirnfläche (21) der Gabelfalle (5) zur Anlage kommt. Insbesondere hier erhöhen die unbeschichteten d. h. metallischen Abschnitte (15) des Gabelfallenkernes (18) ganz wesentlich die Haltbarkeit der Verbindung. Über die, die Beschichtung (22) aufweisenden weiteren Oberflächenabschnitte der Gabelfalle (5) ist diese mit, der Schichtdicke entsprechenden Ausnehmungen (23) versehen.As can be seen from the sectional view according to FIG. 2, when transverse forces occur (arrow 19), these are absorbed by the inner end face (20) of the locking bolt head (6), against which the correspondingly facing end face (21) of the fork latch (5) comes to rest . Especially here the uncoated d. H. metallic sections (15) of the fork latch core (18) very significantly the durability of the connection. The further surface sections of the fork latch (5), which have the coating (22), are provided with recesses (23) corresponding to the layer thickness.

Claims (4)

1. Motor vehicle door catch consisting essentially of a fork latch (5), a pawl (1) and a cylindrical locking pin (2) with a locking pin head (6) of larger cross- section, in which a fork opening (8) of the fork latch (5) encloses the locking pin (2) and the fork latch (5) has on its surface a particularly noise-suppressing coating (22), characterized in that in the region of the fork opening (8) the fork latch (5) has alternate coated and uncoated sections (14 and 15).
2. Motor vehicle door catch according to Claim 1, characterized in that the coating (22) provided in the sections (14) is embedded in corresponding indentations (33) in a metallic fork latch cord (18) and project beyond the contour of the fork opening (8) in the form of slightly bulged projections (17).
3. Motor vehicle door catch according to Claim 1, characterized in that the other regions of the surface of the fork latch (5) which have the coating are provided with recesses (23) corresponding to the thickness of the layer.
4. Motor vehicle door catch according to Claim 1, characterized in that a plastic, preferably polyester elastomer, with good noise-suppressing properties and high strength is used for the coating (22).
EP87100905A 1986-02-21 1987-01-23 Motor vehicle door lock Expired EP0233506B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3605601 1986-02-21
DE3605601A DE3605601C1 (en) 1986-02-21 1986-02-21 Motor vehicle door lock

Publications (3)

Publication Number Publication Date
EP0233506A2 EP0233506A2 (en) 1987-08-26
EP0233506A3 EP0233506A3 (en) 1988-01-07
EP0233506B1 true EP0233506B1 (en) 1989-03-29

Family

ID=6294625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100905A Expired EP0233506B1 (en) 1986-02-21 1987-01-23 Motor vehicle door lock

Country Status (5)

Country Link
US (1) US4783103A (en)
EP (1) EP0233506B1 (en)
JP (1) JPS62211479A (en)
DE (2) DE3605601C1 (en)
ES (1) ES2007286B3 (en)

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Also Published As

Publication number Publication date
DE3760083D1 (en) 1989-05-03
EP0233506A3 (en) 1988-01-07
JPS62211479A (en) 1987-09-17
EP0233506A2 (en) 1987-08-26
US4783103A (en) 1988-11-08
DE3605601C1 (en) 1987-02-19
ES2007286B3 (en) 1993-11-01

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