DE4315886C2 - Seat belt retractor equipped with a comfort function - Google Patents

Seat belt retractor equipped with a comfort function

Info

Publication number
DE4315886C2
DE4315886C2 DE19934315886 DE4315886A DE4315886C2 DE 4315886 C2 DE4315886 C2 DE 4315886C2 DE 19934315886 DE19934315886 DE 19934315886 DE 4315886 A DE4315886 A DE 4315886A DE 4315886 C2 DE4315886 C2 DE 4315886C2
Authority
DE
Germany
Prior art keywords
spring
comfort
around
seat belt
belt retractor
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 - Fee Related
Application number
DE19934315886
Other languages
German (de)
Other versions
DE4315886A1 (en
Inventor
Walter Jahn
Juergen Dipl Ing Gimbel
Joachim Dipl Ing Fausel
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz 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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Priority to DE19934315886 priority Critical patent/DE4315886C2/en
Publication of DE4315886A1 publication Critical patent/DE4315886A1/en
Application granted granted Critical
Publication of DE4315886C2 publication Critical patent/DE4315886C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
    • B60R2022/4446—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in series
    • B60R2022/4453—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in series the additional retraction device being a second spring

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)

Description

Die Erfindung betrifft einen mit einer Komfortfunktion ausge­ statteten Sicherheitsgurt-Aufroller, der neben einer Aufroll­ feder eine dieser gegenüber in Reihe geschaltete, schwächer dimensionierte Komfortfeder aufweist, wobei die beim Umschalten von verminderte auf unverminderte Gurtspannung in Abhängigkeit vom Spannzustand der Komfortfeder an dieser wirkende Stoßbe­ lastung bremsend gemindert wird.The invention relates to a comfort function equipped seat belt retractor that is next to a retractor spring one of these, connected in series, weaker Dimensioned comfort spring, which when switching from reduced to undiminished belt tension depending from the tension state of the comfort spring on this acting shock absorber load is reduced by braking.

Ein derartiger Sicherheitsgurt-Aufroller ist durch die DE 29 23 391 A1 bekannt, wobei die Bremswirkung für die äußere letzte Windung der Komfortfeder durch ein längliches, an dieser Windung zur Anlage bringbares elastisches Element hervorgerufen wird.Such a seat belt retractor is by the DE 29 23 391 A1 known, the braking effect for the outer last Winding of the comfort spring by an elongated, on this winding elastic element that can be brought into contact.

Weiterhin ist es durch die US 1 138 738 bei einer vorzugsweise als Uhrwerksfeder eingesetzten Feder bekannt, die äußere letzte Windung mit einem hakenförmig aufgebogenen Stützabschnitt zu versehen und über diesen Abschnitt hinaus zu verlängern und an­ liegend an die äußere Windung über mindestens eine volle Windung zurückzuführen. Durch diese Doppellagigkeit wird erreicht, daß die äußere Windung verstärkt nach außen gedrückt wird und ihr Stützabschnitt sicher einrastet.Furthermore, it is preferred by US 1 138 738 at one known as the clock spring used, the outer last Winding with a hook-shaped bent support section provided and extend beyond this section and on lying on the outer turn over at least one full turn attributed. This double layer ensures that the outer turn is pushed outward and her Support section securely engages.

Zum sicheren Einhängen des Endes der äußeren Windung einer Auf­ rollfeder eines Gurtrollers ist es durch die GB 22 18 022 A be­ kannt, das Federende einzurollen und den letzten Abschnitt als Lasche abzubiegen, damit die Lasche von einem in Achsrichtung eines Zapfens verlaufenden Schlitzes aufgenommen werden kann.For securely hanging the end of the outer turn of an open It is the roller spring of a belt roller due to GB 22 18 022 A knows to roll the spring end and the last section as Bend the tab so that the tab of one in the axial direction a pin extending slot can be added.

Es ist Aufgabe der Erfindung, die klinkenradseitige Festlegung der Komfortfeder so auszubilden, daß selbst bei einer über einen äußerst langen Zeitraum erfolgenden Gurtbenutzung die Komfort­ funktion gewährleistet ist.It is an object of the invention to determine the ratchet wheel side the comfort spring so that even with one over extremely long period of belt use the comfort function is guaranteed.

Diese Aufgabe wird durch die Merkmale des Patentanspruches gelöst.This object is achieved by the features of the claim solved.

Der Gegenstand der Erfindung wird nachfolgend anhand eines Aus­ führungsbeispiels näher erläutert.The subject matter of the invention is described below with the aid of an off management example explained in more detail.

Von einem mit einer Komfortfunktion ausgestatteten Sicherheits­ gurt-Aufroller, wie er Gegenstand der EP 0 371 288 A2 ist, auf die hinsichtlich der Wirkungsweise von Aufrollfeder und Komfort­ feder verwiesen wird, ist nur ein Abschnitt des Klinkenrades 1 ersichtlich, dessen Rand 2 mit einer Einbuchtung 18 versehen ist, von deren Grund 19 ein Steg 20 abragt, dem mit Abstand ein weiterer Steg 21 vorgeschaltet ist. Im Klinkenrad 1 liegt eine Komfortfeder 7 ein, deren eines Ende 8 um den Steg 20 herumge­ führt ist. In nicht dargestellter Weise ist das andere Ende der Komfortfeder 7 achsseitig an einer von der Gurtrolle aus an­ treibbaren Mitnehmerhülse festgelegt.From a safety belt retractor equipped with a comfort function, as is the subject of EP 0 371 288 A2, to which spring is referred with regard to the mode of action of the retraction spring and comfort, only a section of the ratchet wheel 1 can be seen, the edge 2 of which has an indentation 18 is provided, from the bottom 19 of which a web 20 protrudes, which is preceded by a further web 21 . In the ratchet wheel 1 there is a comfort spring 7 , one end 8 of which leads around the web 20 . In a manner not shown, the other end of the comfort spring 7 is fixed on the axle side to a driving sleeve that can be driven from the belt reel.

Zusammen mit der Komfortfeder 7 verläuft über mehrere Windungen derselben eine Flachfeder 9, die zur Verdeutlichung mit Abstand zur Komfortfeder 7 dargestellt ist, die jedoch in Wirklichkeit an der Komfortfeder 9 anliegt. Der Einfachheit halber sind je­ weils nur Teilbereiche zweier Windungen gezeigt. Das dem Ende 8 der Komfortfeder 7 zugeordnete Ende 10 der Flachfeder 9 ist ab­ gewinkelt um den Steg 21 herumgeführt, während ihr anderes, nicht wiedergegebenes Ende zwischen zwei Windungen der Komfort­ feder 7 ausläuft. Together with the comfort spring 7 extends over a plurality of turns thereof, a leaf spring 9, which is shown to illustrate a distance from the comfort spring 7, but in reality applied to the comfort spring. 9 For the sake of simplicity, only partial areas of two turns are shown. The end 8 of the comfort spring 7 assigned to the end 10 of the flat spring 9 is led from angled around the web 21 , while its other, not shown end between two turns of the comfort spring 7 runs out.

Zum gemeinsamen Festlegen von Komfortfeder 7 und Flachfeder 9 treten somit deren beide Enden 8 und 10 zunächst in die Einbuch­ tung 18 ein, werden um den hinteren Steg 20 herumgeführt und dann in nicht dargestellter Weise unlösbar, z. B. durch Schwei­ ßen, miteinander verbunden. Das noch weiterlaufende Ende 10 ist um den vorderen Steg 21 herumgeführt und endet in einem beide Stege 20 und 21 voneinander trennenden Schlitz 22.To jointly set comfort spring 7 and flat spring 9 , both ends 8 and 10 of which initially enter the device 18 , are guided around the rear web 20 and then unsolvable in a manner not shown, for. B. by welding, connected. The still running end 10 is guided around the front web 21 and ends in a slot 22 separating both webs 20 and 21 .

Claims (1)

Mit einer Komfortfunktion ausgestatteter Sicherheitsgurt-Aufrol­ ler, der neben einer Aufrollfeder eine dieser gegenüber in Reihe geschaltete, schwächer dimensionierte Komfortfeder (7) aufweist, wobei die beim Umschalten von verminderte auf unverminderte Gurtspannung in Abhängigkeit vom Spannzustand der Komfortfeder (7) an dieser wirkende Stoßbelastung dadurch bremsend gemindert, daß eine als in Nähe des einen randseitig an einem Klinkenrad (1) festgelegten Endes (8) der Komfortfeder (7) eingehängte, zu­ sammen mit der Komfortfeder (7) über mehrere Windungen laufende und frei auslaufende Flachfeder (9) vorgesehen ist, deren fi­ xiertes Ende (10) zusammen mit dem zugeordneten Ende (8) der Komfortfeder (7) eingerollt ist und beide Enden (8, 10) zusammen am Klinkenrad (1) festgelegt sind, an dessen Rand (2) eine Ein­ buchtung (18) vorgesehen ist, von deren Grund (19) zwei einander spiegelbildlich zugekehrte Stege (20, 21) abragen, um deren in Einlaufrichtung der beiden eingerollten Enden (8, 10) hintenlie­ genden Steg (20) zunächst beide Enden (8, 10) herumgeführt und dann unlösbar miteinander verbunden sind und daß dann nur noch das Ende (10) der Flachfeder (9) um den anderen Steg (21), im beide Stege (20, 21) voneinander trennenden Schlitz (22) endend, herumläuft.Seat belt retractor equipped with a comfort function, which, in addition to a retraction spring, has a comfort spring ( 7 ) with a smaller dimension than it is connected in series, with the shock load acting on the comfort spring ( 7 ) when switching from reduced to undiminished belt tension depending on the tension state of the comfort spring ( 7 ) Braking reduced that one as in the vicinity of the one end of a ratchet wheel ( 1 ) fixed end ( 8 ) of the comfort spring ( 7 ), together with the comfort spring ( 7 ) running over several turns and free-running flat spring ( 9 ) is provided is whose fi xed end ( 10 ) is rolled up together with the associated end ( 8 ) of the comfort spring ( 7 ) and both ends ( 8 , 10 ) are fixed together on the ratchet wheel ( 1 ), at the edge ( 2 ) of which is a bulge ( 18 ) is provided, from the bottom ( 19 ) of which two mutually opposite webs ( 20 , 21 ) protrude, around which in the inlet Direction of the two rolled ends ( 8 , 10 ) in the back web ( 20 ) first led around both ends ( 8 , 10 ) and then permanently connected and that only the end ( 10 ) of the flat spring ( 9 ) around the other web ( 21 ), ending in the slot ( 22 ) separating the two webs ( 20 , 21 ), runs around.
DE19934315886 1993-05-12 1993-05-12 Seat belt retractor equipped with a comfort function Expired - Fee Related DE4315886C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934315886 DE4315886C2 (en) 1993-05-12 1993-05-12 Seat belt retractor equipped with a comfort function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934315886 DE4315886C2 (en) 1993-05-12 1993-05-12 Seat belt retractor equipped with a comfort function

Publications (2)

Publication Number Publication Date
DE4315886A1 DE4315886A1 (en) 1994-11-17
DE4315886C2 true DE4315886C2 (en) 1995-10-19

Family

ID=6487928

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19934315886 Expired - Fee Related DE4315886C2 (en) 1993-05-12 1993-05-12 Seat belt retractor equipped with a comfort function

Country Status (1)

Country Link
DE (1) DE4315886C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611748C2 (en) * 1996-03-25 1998-03-26 Autoliv Dev Seat belt retractor with comfort function
DE29807231U1 (en) * 1998-04-21 1998-08-13 TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf Auxiliary spring for a belt retractor of a vehicle seat belt and belt retractor provided with this
DE102013201849B4 (en) 2013-02-05 2015-08-27 Autoliv Development Ab Seat belt retractor with a 2-spring comfort function

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1138738A (en) * 1913-12-26 1915-05-11 Charles I Earll Spring.
DE1777121U (en) * 1958-08-01 1958-11-06 Yale & Towne Mfg Co SPRING, IN PARTICULAR DOOR CLOSING SPRING.
FR2428767A1 (en) * 1978-06-13 1980-01-11 Securaiglon Sa Vehicle safety seat belt - has spiral spring elastic component acting on last spring winding to limit tension
DE2847544A1 (en) * 1978-11-02 1980-05-22 Eberle & Cie Gmbh J N Spiral timepiece balance spring - has hooked ends and deformed section in outermost coinciding over which outer end fits
AU1345183A (en) * 1982-04-14 1983-10-20 Rainsfords Metal Products Pty. Ltd. Seat belt retractor
DE3838175C1 (en) * 1988-11-10 1990-05-23 Trw Repa Gmbh, 7077 Alfdorf, De

Also Published As

Publication number Publication date
DE4315886A1 (en) 1994-11-17

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART,

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE

8339 Ceased/non-payment of the annual fee