EP0131255B1 - Schloss für Sicherheitsgurte - Google Patents

Schloss für Sicherheitsgurte Download PDF

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Publication number
EP0131255B1
EP0131255B1 EP19840107823 EP84107823A EP0131255B1 EP 0131255 B1 EP0131255 B1 EP 0131255B1 EP 19840107823 EP19840107823 EP 19840107823 EP 84107823 A EP84107823 A EP 84107823A EP 0131255 B1 EP0131255 B1 EP 0131255B1
Authority
EP
European Patent Office
Prior art keywords
ejector
buckle according
arresting
buckle
locking
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
EP19840107823
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0131255A3 (en
EP0131255A2 (de
Inventor
Holger Harenberg
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.)
Autoflug GmbH
Original Assignee
Autoflug GmbH
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 Autoflug GmbH filed Critical Autoflug GmbH
Publication of EP0131255A2 publication Critical patent/EP0131255A2/de
Publication of EP0131255A3 publication Critical patent/EP0131255A3/de
Application granted granted Critical
Publication of EP0131255B1 publication Critical patent/EP0131255B1/de
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2507—Safety buckles actuated by a push-button
    • A44B11/2511—Safety buckles actuated by a push-button acting perpendicularly to the main plane of the buckle, e.g. placed on the front face of the buckle

Definitions

  • the invention relates to a lock for seat belts in passenger transport means, with a lock housing and a lock tongue which can be inserted into an opening and locked by at least one locking member in the housing and which is acted upon by a spring-loaded ejector, the ejector being engaged by a locking device in a locking device when the lock tongue is not inserted Inserting opening closing position is held, which is detachable from this when the lock tongue is inserted.
  • EP-A-0 023 122 proposes a lock of the generic type which is intended to prevent unauthorized persons from using a screwdriver to penetrate the interior of the lock through the entry opening for the lock tongue and make the lock unusable by the ejector with a corresponding object is pressed into the housing following its path, resulting in a false triggering of the lock with the locking member falling into the path for the lock tongue.
  • the ejector in the known lock at its free, in contact with the lock tongue end has a recess which is designed such that after ejection of the lock tongue, the locking member rests on a side surface of the ejector such that a corner overhangs the recess and projecting into it, the side surface of the ejector having a stop near the corner of the locking member which engages with the locking member and prevents inward movement of the ejector, the head portion of the lock tongue when inserted into the recess in the ejector is engaged with the overhanging corner of the locking member and thereby clearing the locking member from the stop and allowing an insert movement of the ejector.
  • the ejector is locked in a still slightly retracted position inside the lock housing by the locking member.
  • Such a design inevitably requires that a cavity is formed between the insertion opening for the lock tongue and the recess of the ejector, into which foreign bodies, for example coins, can still penetrate or be inserted, which can then be inserted into the interior of the lock tongue when the lock tongue is inserted
  • Lock housing are pressed and prevent proper locking of the locking member here.
  • dirt for example in the form of dust particles or cigarette ash, can easily collect in this cavity, which also impairs the functionality of the lock.
  • the invention is therefore based on the object of offering a lock for seat belts in which the penetration of foreign bodies and dirt into the interior of the lock and improper manipulation of the lock can be reliably prevented.
  • the locking device for the ejector is advantageously designed as a spring element with locking projections and recesses. If the security is to be increased still further, an advantageous embodiment of the invention provides that the locking part is additionally supported by a pressure element which acts on it with a force component running transversely to the direction of insertion or ejection.
  • the locking device ensures that the ejector is held securely even when the lock tongue is released, so that rattling noises are prevented.
  • Another advantage of the invention results from the fact that the locking device simultaneously closes the insertion opening on the side, so that there is additional security against the ingress of dirt particles.
  • FIG 1 is an as an example Pushbutton buckle trained belt buckle shown. It has a so-called two-plate housing 10 with a path 11 running between the two plates for a plate-shaped lock tongue 12. This contains an opening 13 into which a locking member 14 arranged orthogonally to the lock housing plates 10 and to the lock tongue 12 can snap in order to close the belt buckle.
  • a finger button 15 is used, on which fork-shaped projections 16 are formed, which enclose the locking member 14.
  • a compression spring 17 loads the locking member 14 from above, so that it constantly strives in the locking position.
  • a slide button not shown, can also be provided.
  • the path 11 for the lock tongue 12 is on the one hand open to the outside and there forms a funnel-like insertion opening 18 for the lock tongue; on the opposite side, the web 11 is closed by a plate-shaped connecting member 19 for an anchoring part 20.
  • a rivet 21 is used to connect the lock housing 10 to the connecting member 19.
  • An ejector 22 is mounted for longitudinal movement in the central region of the track 11 and is supported on two side ejector springs 23 which close the ejector 22 in the direction of the insertion opening 18 for the lock tongue 12 push strive. When the lock tongue 12 is inserted, it and the ejector 22 are in contact with one another.
  • the lock housing 10 formed from two plates, which absorbs the essential belt forces and introduces it into the vehicle via the anchoring part 20, is externally covered by appropriately and attractively shaped housing caps, preferably made of plastic, by an upper cap 24 and a lower cap 25 leave the insertion opening 18 and the possibility of access to the finger button 15 free with complementary designs.
  • the caps are preferably centered on one another by means of pins and corresponding holes.
  • connecting screws not shown, are provided.
  • the inner surfaces of the cover caps 24, 25 are profiled to perform various functions, for example the lower cap 25 has upstanding ribs for positioning and holding the housing 10.
  • a locking device 55 designed as a latching device is arranged on the outside, which will be described in more detail below with reference to FIGS. 2 to 5.
  • each part of the locking device consists of a spring element 30, 31, which is made, for example, of flexible plastic and has, in rough approximation, the shape of an S-shaped band, the material thickness of which depends on the average loads at Use of the buckle varies. At the ends of the S-shape, extensions can be provided, which in particular perform fastening and support functions. Due to the two opposing arches of the S shape, multiple spring effects can be achieved.
  • the spring element 30, 31 is an independent component which is used in the assembly of the lock in the lower cap 25, which for this purpose has a corresponding profile, in such a way that the section forming the actual locking part 60 is pivotable .
  • the locking part 60 can be pivoted or pressed onto or away from the pivot point 68 arranged in the outer region of the lock cap via the outer arm 67.
  • the arrangement of the spring element 30, 31 during assembly is such that the locking part 60 in its locking position, ie. H. when the lock tongue 12 is not retracted, its inner surface 60b is positioned essentially parallel to the side surface 25a of the housing cap 25 and that its inner surface 60a projects into the web 11 for the ejector 22.
  • the locking part 60 is designed in detail as follows. On its surface 60a facing the ejector 22, it has, approximately in the middle, a continuous recess 62 running perpendicular to the lock housing plates 10.
  • the recess 62 forming a snap-back recess is formed by a correspondingly inclined shape of the side surface 64 facing the free end of the locking part 60 such that it has a smaller width in the region of the surface 60a than at its base.
  • the surface 64 simultaneously forms one side of a locking lug 61 which adjoins the free end of the locking part 60.
  • the opposite side of the locking lug 61 is formed by a surface which extends outwards from the inner surface 60a and which at the same time has the function of a run-up slope 63.
  • the surface of the ramp slope 63 in turn extends perpendicular to the lock housing plates 10.
  • this is provided with a rounding 65, which in turn serves as a run-up slope for the lock tongue 12, as will be explained below.
  • the shape of the ejector 22 is also particularly adapted to that of the locking part 60.
  • the ejector 22 has on its free end facing the lock tongue 12 laterally recesses 71, the free End facing surface 72 is again inclined so that the continuous recess 72 on the side surface 22a of the ejector 22 has a smaller width than at its base.
  • the depth of the recess 62 which corresponds to the height of the locking lug 61, also essentially corresponds to the depth of the recess 71 in the ejector 22.
  • the ejector 22 is equipped at its free end with a concave curvature which corresponds to the convex curvature of the front insertion part of the lock tongue 12.
  • the corner regions 22c, 22d of the concave surface 22e are rounded.
  • each locking part 60 of the spring elements 30, 31 lies with its outer surface 60a at least partially on the outer surfaces 12a of the lock tongue 12 (FIG. 5).
  • the locking part 60 can not take over a locking function in this position, but it now causes due to the spring action of the spring 30, 31 a transverse to the insertion or ejection direction force component against the lock tongue 12 so that it is held laterally and rattling of the lock tongue is avoided .
  • the locking devices 55 according to the invention are arranged on both sides of the inlet opening, as a result of which a uniform force distribution and particularly secure locking of the ejector 22, as will be described, can be achieved.
  • the ejector 22 After loosening the lock tongue 12 with the aid of the locking member 14 via the pushbutton of the belt buckle, the ejector 22 is then pushed forward via the lateral ejection springs 23 in the direction of the inlet opening 18, pushing the lock tongue 12 in front of it, pushing it out of the belt buckle housing. As soon as the corner regions 22c, 22d of the ejector 22 come forward out of the path 11 formed by the lock housing plates 10, they run onto the run-on slopes 63 of the locking parts 60 of the spring elements 30, 31 and press the locking parts 60 against each other due to the stronger spring action of the ejection springs 23 the spring elements 30, 31 to the outside.
  • each locking part 60 engages after the ejector 22 with its corner regions 22c, 22d has overrun the latching lug 61 into the recesses 71 due to the spring action of the spring elements 30, 31.
  • the recesses 62 encompass the corner regions 22c, 22d of the ejector 22, so that, due to the hook effect of the oblique surfaces 64, 72, a double latching and thus a secure locking is achieved.
  • a release of the lock is rather only possible with the lock tongue 12 itself or - purely theoretically - with a body of the same shape.
  • lock tongue 12 If the lock tongue 12 is reinserted into the lock housing, its front corner regions first abut against the bevels 65 of the locking parts 60 and press them away to the outside. As a result, the locking lugs 61 are led outwards at the same time, whereby the locking with the ejector 22 is released (FIG. 4) and when the lock tongue 12 is pushed in further, the ejector 22 is pressed into its retracted position until the locking member 14 engages and the lock tongue 12 sets in the lock housing 10.
  • the locking device cannot be released with other foreign bodies, such as coins or the like, because these generally do not have the shape of the front end of the lock tongue which is necessary in order to push the locking parts 60 away and thus to be able to expose the ejector 22.
  • the invention also offers the advantage that no dirt particles, such as ash residues or the like, can penetrate into the interior of the lock, since the locking device acts laterally like a seal.
  • a locking part 60 can be articulated directly to the lock housing plates 10 via an arm, at least the arm having to have sufficient spring properties. Further exemplary embodiments are listed by way of example in the patent claims.
  • the locking part 60 should preferably also be equipped with a pressure element which has a force component transverse to the insertion or ejection direction of the locking pin 12, in order to ensure that this locking device is also subjected to greater forces not or only with the Lock tongue 12 can be solved.
  • a supporting pressure element will generally not be required in the embodiment shown in FIGS. 2 to 5 if spring elements 30, 31 are used with sufficient spring action. However, it may be necessary for manufacturing reasons or for cost reasons that the spring action of the spring elements 30, 31 and thus the pressing forces of the locking part 60 are not sufficient to ensure reliable locking into the recesses of the ejector 22. In such a case, even in such an embodiment, the locking part 60 can be additionally supported with a pressure element 66, for example a compression spring (shown in broken lines in FIG. 3).
  • the embodiment shown in the figures gives the additional possibility of giving up an additional compressive force on the oblique side edges 34 of the lock tongue 12 via the spring action of the arms 67, as a result of which the lock tongue 12 is held even more securely and a rattling of the lock tongue in the lock housing when fully engaged is excluded.

Landscapes

  • Buckles (AREA)
  • Automotive Seat Belt Assembly (AREA)
EP19840107823 1983-07-09 1984-07-05 Schloss für Sicherheitsgurte Expired EP0131255B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833324850 DE3324850A1 (de) 1983-07-09 1983-07-09 Schloss fuer sicherheitsgurte
DE3324850 1983-07-09

Publications (3)

Publication Number Publication Date
EP0131255A2 EP0131255A2 (de) 1985-01-16
EP0131255A3 EP0131255A3 (en) 1986-08-27
EP0131255B1 true EP0131255B1 (de) 1988-05-18

Family

ID=6203606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840107823 Expired EP0131255B1 (de) 1983-07-09 1984-07-05 Schloss für Sicherheitsgurte

Country Status (3)

Country Link
EP (1) EP0131255B1 (enrdf_load_stackoverflow)
JP (1) JPS6036005A (enrdf_load_stackoverflow)
DE (1) DE3324850A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0636729Y2 (ja) * 1988-09-21 1994-09-28 日本精工株式会社 シートベルト用バックル
GB8904205D0 (en) * 1989-02-23 1989-04-05 Bsrd Ltd Seat belt buckle
IT231546Y1 (it) * 1993-12-22 1999-08-03 Guido Ferrarese Fibbia di cintura di sicurezza a tre rami
DE29810954U1 (de) * 1998-06-18 1999-03-25 TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf Gurtschloß
US6539595B1 (en) 2001-06-29 2003-04-01 Charles E. Benedict Non-inertial release safety restraint belt buckle system
EP1464244A1 (en) * 2003-04-04 2004-10-06 Pony Ma Fastening device capable of releasable engagement with more than one latch plate in different directions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197619A (en) * 1978-09-22 1980-04-15 Britax (Wingard) Limited Tongue and buckle fastener for a safety belt harness
DE3021796C2 (de) * 1980-06-11 1985-03-28 Repa Feinstanzwerk Gmbh, 7071 Alfdorf Sicherheitsgurtverschluß

Also Published As

Publication number Publication date
DE3324850A1 (de) 1985-01-24
DE3324850C2 (enrdf_load_stackoverflow) 1987-05-27
EP0131255A3 (en) 1986-08-27
JPS6036005A (ja) 1985-02-25
EP0131255A2 (de) 1985-01-16

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