PatentDe  


Dokumentenidentifikation EP0745039 20.05.1999
EP-Veröffentlichungsnummer 0745039
Titel UMLENKUNG FÜR EINEN SICHERHEITSGURT
Anmelder AlliedSignal Inc., Morristown, N.J., US
Erfinder PFEIFFER, Robert, C., Troy, MI 48098, US
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 69509073
Vertragsstaaten DE, ES, FR, GB, IT
Sprache des Dokument En
EP-Anmeldetag 14.02.1995
EP-Aktenzeichen 959117904
WO-Anmeldetag 14.02.1995
PCT-Aktenzeichen US9502031
WO-Veröffentlichungsnummer 9523011
WO-Veröffentlichungsdatum 31.08.1995
EP-Offenlegungsdatum 04.12.1996
EP date of grant 14.04.1999
Veröffentlichungstag im Patentblatt 20.05.1999
IPC-Hauptklasse B60R 22/00

Beschreibung[en]
BACKGROUND AND SUMMARY OF INVENTION

The present invention generally relates to a web guide for a seat belt.

Web guides, or D-rings as they are also called, are primarily utilized to support the shoulder belt portion of a safety belt relative to an occupant's shoulder.

It is the object of the present invention to provide an improved web guide or D-ring. It is another object to provide a web guide having a cover integrally joined to a load absorbing core by a hinge.

While some prior web guides may have occasionally included a cover, such as illustrated in the U.S. Patent 5,207,452 there are no one-piece web guides that include integral covers and a load absorbing core as provided for in the present invention. Further, an inspection of the prior art, including currently manufactured web guides, show that the material used to coat the core is only black, which has marked, negative effect on customer or driver satisfaction because it is different than the colour of the other interior trim parts of the passenger compartment. In one embodiment of the present invention, a synthetic ionomer resin covers the load absorbing core and forms an integral hinge and cover. This type of resin is structurally sound, and has a low coefficient of friction and can be made in colours so that the entire web guide (core, hinge and cover) can match the colour of the interior trim parts of the passenger compartment or even the colour of the seat belt webbing.

Accordingly the invention comprises: a web guide (20) for supporting a portion of safety belt webbing (22), the web guide adapted to be mounted relative to a mounting surface, comprising:

  • a load absorbing core (30) including a first part (34) having a central opening (36) for mounting the web guide to the mounting surface; and
  • a second part (38), below the first part (34) having a top (40), sides (40a, b) and a bottom (44), forming there between a web receiving opening (35) remote from the central opening (36);
  • a covering material (80) molded about the core (30) and covering at least the bottom of the second part of the core to form a webbing supporting surface, the covering material forming an integral hinge (150) and an integral cover (170) extending from the hinge (150), wherein a relatively thin layer of the covering material covers the first part opening (36), and providing an integral bushing (84) about the central opening (36) for receipt of a mounting fastener, and a thick layer (90) of the covering material (80) envelops the bottom (44) of the second part of the core (30) reducing the size of the web receiving opening and providing an integral support surface (92) for the safety belt webbing (22). According to a preferred embodiment the thicker layer of material covers most of thee second part of the core and provided an integral support surface upon which the safety belt webbing can easily slide. The thicker layer of coating material preferably includes a transition surface having a step recessed below a front surface of the thicker layer. The cover, also formed of the coating material, integrally extending from the hinge includes a front surface having a top part joined to the hinge, side parts and a bottom part. The bottom part of the cover may be shaped such that when the cover is rotated about the hinge to its closed position, the bottom part of the cover engages the step on the transition surface. When the cover is closed it is generally coplanar with the front surface of the thick layer. The cover further may include a latch that engages a latch boss on the core to keep the cover closed.

In the prior art, US-A-5 096 224 uses a coating material formed about the guide and incorporates a cover but does not disclose or suggest an integral hinge or the use of thin and thick layers of coating material for different parts of the guide. US-A-4 389 059 is a wire loop guide of which only the upper part is coated with material which forms a cover but again no use is made of different thicknesses of coating.

Many other objects and purposes of the invention will be clear from the following detailed description of the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:

  • FIGURE 1 shows a plan view of a web guide.
  • FIGURE 2 shows a side view of the web guide.
  • FIGURE 3 shows a cross sectional view taken generally along section 3-3 of FIGURE 1.
  • FIGURE 4 shows partial cross sectional view of a portion of the web guide.

DETAILED DESCRIPTION OF THE DRAWING:

With reference to the FIGURES there is shown a web guide 20 for supporting a portion of safety belt webbing 22 (shown in FIGURE 3). The web guide is adapted to be mounted relative to a vehicle mounting surface, such as the B-pillar or alternatively a structural support member within an automotive seat. The web guide 20 includes a metal load absorbing plate or core 30 that is bent slightly about a bend line 31. The core 30 is generally triangular in shape with truncated, curved corners. The load absorbing core 30 includes an upper first part 34 having a central opening 36 and a lower second part 38 which extends from and is positioned below the first part and below the bend line 31. The second part includes an oval opening 35 bounded by a top 40, sides 40a,b and a bottom 44. The top 40 also includes a notch 37 which forms a widened center part of the opening 35. The second part of the core further includes two locating apertures 46a and 46b within a central portion 50 of the top 40. These locating apertures are used to spatially lift the core 30 relative to inside walls of a mold so that a coating material 80 can flow about the core as the material 80 is molded thereabout. The coating material 80, such as an ionomer plastic resin or other lubricous polymeric material, which displays a high degree of lubricity, is molded about the core 30. One such preferred material is DuPont's Bexloy W. A relatively thin layer 82 of this covering material 80 covers the front and sides of the first part 34 of the core. The thin layer 82 also covers the central portion 50 of the top of the second part of the core 30, including the top and sides of the notch 37. As can be seen from FIGURE 1, the metal surface about the locating apertures 46a and 46b remains exposed for shouldering standoff pins in the mold. The thin layer 82 also extends along the edge of the rear surface of the first part to lock the thin layer 80 in place on the core 30. The thin layer 82 of coating material 80 reduces the diameter of the central opening 36 forming a narrowed opening 36'. The coating material 80 or 82 inside the narrowed central opening 36' forms an integral bushing 84 through which a mounting fastener 86 is inserted. As can be appreciated the web guide is rotatable about the axis of fastener 86.

A thicker layer 90 of the coating material 80 covers the ends 52a and 52b of the top 40 of the second part 36 outboard of the locating apertures 46a and 46b. The sides 42a,b and bottom 44 are also covered by this increased thickness layer 90. As can be seen, this layer 90 of coating material is also formed into a bridge 94 which extends generally across the top of the oval opening 35 in the core 30. The bridge 94 in concert with the coating material 82 covering the notch 37 reduces the size of the notch 37 forming a generally rectangular opening 95. The bridge 94 includes a boss 96 which extends from a lower surface. As mentioned the thick layer of coating material 92 also covers the bottom of the second part 34 of the core 30 and provides an integral support surface 92 upon which the safety belt 22 can easily slide. As can be seen from the cross-sectional view FIGURE 3, this thick layer 90, proximate the location of contact with the safety belt webbing 22, is generally circular in cross-section and has a radius of approximately ten millimeters. The boss 96 as well as the material covering the bottom of the second part of the core reduces the size of the opening 35 to a spacing or slit 98 slightly more that the thickness of the webbing 22 to prevent the webbing 22 from twisting.

As can be seen from FIGURES 1 and 3, the thick layer 90, which covers the ends of 52a and 52b of the central portion and forms the bridge 94 includes an inwardly extending transition surface having sections 100a, 100b and 100c. Each section of the transition surface includes a stepped or shoulder portion 104 recessed below the front surface 102 of the thick layer 90 of covering material. The central portion 110b, at its step includes a narrow extending portion of coating material forming a latch boss 112 which engages a latch formed on a cover.

Extending upwardly from the coating about the first part 34 of the core 30, formed by a thin section of the resin coating material 80, is an integral hinge 150. Extending from the hinge 150 is an integrally molded cover 170. The cover 170 is shown in an opened configuration in FIGUREs 1 and 2. The phantom lines in FIGURE 3 show the cover closed and latched in place. The cover 170 includes a front surface 172 and two angled sides 176s and 176b. The sides meet at a top part 174 (referenced to its position when the cover is closed) generally at the hinge 150. The front surface 172 is sculptured so as to make a smooth transition into the sides and top part. A bottom part 178 (referenced to its position when the cover is closed) of the cover 170 is shaped such that when the cover 170 is rotated about the hinge 150 toward the covered load absorbing core 30, the bottom part 178 engages the step 104 on each transition surface 100a,b and c. In addition, the front surface 172 of the cover 170, when in this rotated, closed configuration, is generally coplanar of the first surface 102 of the thick layer 90 of the covering material.

The cover 170 further includes two locating tabs 182a and 182b extending from the inside of the front surface. Also extending down from the inside of the front surface 172 of the cover is a stepped, cover latch 184 which lockingly engages the latch boss 112 on the bridge 94. When the cover 170 is rotated, the locating tabs slidingly engage the sides of the rectangular opening 95 providing lateral stability for the cover, that is, with the cover latched in place and with the locating tabs against the sides of the rectangular opening 95 the cover 170 is inhibited from being moved to the left or to the right. The cover also includes three perpendicularly extending ribs 192a, 192b and 192c which extend outwardly generally from the inside of the transition surface between the front surface and the sides. These ribs 192 engage the coating material on the front surface 194 of the first part of the core 30 and with the cover 170 latched in place, position the front surface 172 at a determinable distance from the core 30 so that the front surface 172 is generally in line with the top surface 102 of the thick layer of covering material 92.

FIGUREs 1 and 3 also show two other tabs 196a and 196b which extend from ribs 192a, and b generally downwardly on the inside surface of each side 176a,b. These tabs 196 are designed to engage the sides of the coated first part off the core 30, and provide additional lateral stability of the cover 170.


Anspruch[de]
  1. Bandführung (20), um einen Bereich eines Sicherheitsgurtbandes (22) zu tragen, wobei die Bandführung ausgelegt ist, um relativ zu einer Montageoberfläche angebracht zu werden, aufweisend:
    • einen lastaufnehmenden Kern (30), der einen ersten Teil (34) umfaßt, der eine zentrale Öffnung (36) hat, um die Bandführung an der Montageoberfläche anzubringen; und
    • einen unter dem ersten Teil (34) angeordneten zweiten Teil (38), der ein oberes Ende (40), Seiten (40a, b), und ein unteres Ende (44) hat, die dazwischen eine fern von der zentralen Öffnung (36) gelegene Bandaufnahmeöffnung (35) bilden;
    • ein Bedeckungsmaterial (80), das um den Kern (30) herum preßgeformt ist, und mindestens das untere Ende des zweiten Teils des Kerns bedeckt, um eine Bandauflagefläche zu bilden, wobei das Bedeckungsmaterial ein integrales Scharnier (150) und eine von dem Scharnier (150) ausgehende, integrale Abdeckung (170) bildet, wobei eine relativ dünne Schicht des Bedeckungsmaterials die Öffnung (36) in dem ersten Teil bedeckt, und eine integrale Buchse (84) für die Aufnahme eines Montage-Befestigungselements um die zentrale Öffnung (36) herum bildet, und
    • eine dicke Schicht (90) des Bedeckungsmaterials (80) das untere Ende (44) des zweiten Teils des Kerns (30) umhüllt, wobei sie die Größe der Bandaufnahmeöffnung verringert und eine integrale Auflagefläche (92) für das Sicherheitsgurtband (22) bildet.
  2. Bandführung gemäß Anspruch 1, wobei das Beschichtungsmaterial einen integralen ersten Verriegelungsteil (112) aufweist, und wobei die Abdeckung einen zweiten Verriegelungsteil (184) aufweist, um in den ersten Verriegelungsteil einzugreifen, und die Abdeckung auf dem Bedeckungsmaterial einzurasten.
  3. Bandführung gemäß Anspruch 1 oder 2, wobei der erste Teil des Kerns (30) einen mit Aussparungen versehenen Bereich (37) über der Bandaufnahmeöffnung (35) umfaßt, und wobei die dünne Materialschicht ein oberes Ende und die Seiten des mit Aussparungen versehenen Bereichs (37) bedeckt, und wobei die Abdeckung (170) Positioniernasen (182) umfaßt, die in die Seiten des bedeckten, mit Aussparungen versehenen Bereichs einrastbar sind, um die Abdeckung (170) daran zu verhindern, sich seitlich zu verschieben.
  4. Bandführung gemäß Anspruch 3, wobei die Abdeckung zwei Positioniernasen umfaßt.
  5. Bandführung wie in irgendeinem vorhergehenden Anspruch definiert, wobei die Abdeckung eine Vielzahl von Rippen umfaßt, die in das auf den Kern aufgebrachte Beschichtungsmaterial eingreifen, um eine vordere Oberfläche der Abdeckung in einem bestimmbaren Abstand von dem Kernbeschichtungsmaterial anzuordnen.
  6. Bandführung gemäß Anspruch 5, wobei manche der Rippen ein Bein umfassen, das in das auf den Seiten des Kerns aufgebrachte Beschichtungsmaterial eingreifen kann, um die Abdeckung daran zu hindern, sich seitlich zu verschieben, nachdem sie geschlossen wurde.
  7. Bandführung (20) gemäß irgendeinem vorhergehenden Anspruch, wobei
    • eine relativ dünne Schicht des Bedeckungsmaterials den ersten Teil (34) und einen mittleren Bereich (50) des oberen Endes (40) des zweiten Teils bedeckt, wobei die dünne Schicht (82) den Durchmesser der zentralen Öffnung (36) verringert, und eine integrale Buchse (84) zur Aufnahme eines Montage-Befestigungselements um die zentrale Öffnung (36) herum bildet, und
    • eine dicke Schicht (90) des Bedeckungsmaterials (80) die Ränder (52a, b) des mittleren Bereichs des oberen Endes des zweiten Teils bedeckt und eine Brücke (94) über einen oberen Bereich der Bandaufnahmeöffnung (35) bildet, wobei die Brücke (94) einen inneren Verriegelungsvorsprung (112) trägt; wobei die dicke Schicht auch die Seiten (40a, b) und das untere Ende (44) des zweiten Teils des Kerns (30) umhüllt, wobei sie die Größe der ersten Öffnung verringert, und eine integrale Auflagefläche (92) auf der das Sicherheitsgurtband (22) gleiten kann; wobei die dicke Schicht (90) nahe bei jedem der Ränder (52a, b), und über die Brücke (94) Übergangsoberflächen (100a, b, c) umfaßt, wobei jede Übergangsoberfläche (100a, b) eine Stufe oder Schulter (104) umfaßt, die unter einer ersten oder vorderen Oberfläche (102) der dicken Schicht (90) zurückgesetzt ist;
    • ein Scharnier (150), das aus dem Bedeckungsmaterial integral gebildet ist, von dem um den ersten Teil (34) herum aufgebrachten Bedeckungsmaterial (80) ausgeht;
    • eine Abdeckung (170), die aus dem Bedeckungsmaterial integral gebildet ist, sich von dem Scharnier nach außen erstreckt, und eine vordere Oberfläche (172) umfaßt, die einen mit dem Scharnier verbundenen, oberen Teil (174), Seitenteile (176a, b), und einen unteren Teil (178) hat;
    • der untere Teil (178) der Abdeckung (170) so geformt ist, daß dann, wenn die Abdeckung (170) eingerastet ist, der untere Teil in die Stufe (104) auf jeder Übergangsoberfläche (100a, b, c) eingreift, und die vordere Oberfläche (172) der Abdeckung (170) im allgemeinen koplanar mit der ersten Oberfläche (102) der dicken Schicht (90) ist; und
    • die Abdeckung (170) weiterhin ein Verriegelungsmittel (184) umfaßt, das mit dem Verriegelungsvorsprung (112) in Eingriff gebracht werden kann, um die Abdeckung einzurasten.
Anspruch[en]
  1. A web guide (20) for supporting a portion of safety belt webbing (22), the web guide adapted to be mounted relative to a mounting surface, comprising:
    • a load absorbing core (30) including a first part (34) having a central opening (36) for mounting the web guide to the mounting surface; and
    • a second part (38), below the first part (34) having a top (40), sides (40a, b) and a bottom (44), forming there between a web receiving opening (35) remote from the central opening (36);
    • a covering material (80) molded about the core (30) and covering at least the bottom of the second part of the core to form a webbing supporting surface, the covering material forming an integral hinge (150) and an integral cover (170) extending from the hinge (150), wherein a relatively thin layer of the covering material covers the first part opening (36), and providing an integral bushing (84) about the central opening (36) for receipt of a mounting fastener, and
    • a thick layer (90) of the covering material (80) envelops the bottom (44) of the second part of the core (30) reducing the size of the web receiving opening and providing an integral support surface (92) for the safety belt webbing (22).
  2. The web guide as defined in claim 1 wherein the coating material comprises an integral first latch part (112) and wherein the cover includes a second latch part (184) for engaging the first latch part to latch the cover in place on the covering material.
  3. The web guide as defined in claim 1 or 2 wherein the first part of the core (30) includes a notched portion (37) above the web receiving opening (35), and wherein the thin layer of material covers a top and sides of the notched portion (37), and wherein the cover (170) includes locating tabs (182) engagable with the sides of the covered notched portion to inhibit the cover (170) from moving side to side.
  4. The web guide as defined in claim 3 wherein the cover includes two locating tabs.
  5. The web guide as defined in any preceding claim wherein the cover includes a plurality of ribs which engage the coating material on the core to space a front surface of the cover at a determinable distance from the core coating material.
  6. The web guide as defined in claim 5 wherein certain one of the ribs include a leg engagable with the coating material on sides of the core to inhibit the cover, after it is closed, from moving laterally.
  7. A web guide (20) according to any preceding claim
    • wherein a relatively thin layer of the covering material covers the first part (34) and a central portion (50) of the top (40) of the second part, the thin layer (82) reducing the diameter of the central opening (36), and providing an integral bushing (84) about the central opening (36) for receipt of a mounting fastener, and
    • a thick layer (90) of the covering material (80) covers ends (52a, b) of the central portion of the top of the second part and forms a bridge (94) across a top portion of the web receiving opening (35), the bridge (94) supporting an internal latch boss (112), the thick layer also enveloping the sides (42a, b) and bottom (44) of the second part of the core (30) reducing the size of the first opening and providing an integral support surface (92) for the safety belt webbing (22) can slide;
    • the thick layer (90) near each of the ends (52a, b) and across the bridge (94) including transition surfaces (100a, b, c), each transition surface (100a, b) includes a step or shoulder (104) recessed below a first or front surface (102) of the thick layer (90);
    • a hinge (150), integrally formed of the covering material, extends from the covering material (80) about the first part (34);
    • a cover (170); integrally formed of the covering material, extends outward from the hinge and includes a front surface (172) having a top part (174) joined to the hinge, side parts (176a, b) and a bottom part (178);
    • the bottom part (178) of the cover (170) is shaped such that when the cover (170) is latched in place the bottom part engages the step (104) on each transition surface (100a, b, c) and the front surface (172) of the cover (170) is generally coplanar with the first surface (102) of the thick layer (90); and
    • the cover (170) further includes latch means (84) engagable with the latch boss (112) for latching the cover in place.
Anspruch[fr]
  1. Guide de sangle (20) destiné à supporter une partie d'une sangle d'une ceinture de sécurité (22), le guide de la sangle étant destiné à être monté sur une surface de montage, comprenant:
    • un noyau à absorption de la charge (30), englobant une première partie (34) comportant une ouverture centrale (36) en vue du montage du guide de la sangle sur la surface de montage; et
    • une deuxième partie (38), au-dessous de la première partie (34), comportant une partie supérieure (40), des côtés (40a, b) et une partie inférieure (44), formant entre eux une ouverture de réception de la sangle (35) éloignée de l'ouverture centrale (36);
    • un matériau de revêtement (80), moulé autour du noyau (30) et recouvrant au moins la partie inférieure de la deuxième partie du noyau pour former une surface de support de la sangle, le matériau de revêtement formant une charnière solidaire (150) et un couvercle solidaire (170), s'étendant à partir de la charnière (150), une couche relativement fine du matériau de revêtement recouvrant l'ouverture de la première partie (36) et établissant une douille solidaire (84) autour de l'ouverture centrale (36) en vue de la réception d'un élément de fixation de montage, et
    • une couche épaisse (90) du matériau de revêtement (80) enveloppant la partie inférieure (44) de la deuxième partie du noyau (30), réduisant la taille de l'ouverture de réception de la sangle et établissant une surface de support solidaire (92) pour la sangle de la ceinture de sécurité (22).
  2. Guide de sangle comme défini dans la revendication 1, dans lequel le matériau de revêtement comprend une première partie de verrouillage solidaire (112), le couvercle englobant une deuxième partie de verrouillage (184) destinée à s'engager dans la première partie de verrouillage pour verrouiller le couvercle dans sa position sur le matériau de revêtement.
  3. Guide de sangle comme défini dans les revendications 1 ou 2, dans lequel la première partie du noyau (30) englobe une partie entaillée (37) au-dessus de l'ouverture de réception de la sangle (35), la fine couche de matériau recouvrant une partie supérieure et les côtés de la partie entaillée (37), le couvercle (170) englobant des pattes de positionnement (182) pouvant s'engager dans les côtés de la partie entaillée revêtue pour empêcher un déplacement du couvercle (170) d'un côté vers l'autre.
  4. Guide de sangle comme défini dans la revendication 3, dans lequel le couvercle englobe deux pattes de positionnement.
  5. Guide de sangle comme défini dans l'une quelconque des revendications précédentes, dans lequel le couvercle englobe plusieurs nervures s'engageant dans le matériau de revêtement sur le noyau pour espacer une surface avant du couvercle d'une distance déterminable du matériau de revêtement du noyau.
  6. Guide de sangle comme défini dans la revendication 5, dans lequel certaines des nervures englobent une branche pouvant s'engager dans le matériau de revêtement sur les côtés du noyau pour empêcher un déplacement latéral du couvercle après sa fermeture.
  7. Guide de sangle (20) selon l'une quelconque des revendications précédentes,
    • dans lequel une couche relativement fine du matériau de revêtement recouvre la première partie (34) et une partie centrale (50) de la partie supérieure (40) de la deuxième partie, la fine couche (82) réduisant le diamètre de l'ouverture centrale (36) et établissant une douille solidaire (84) autour de l'ouverture centrale (36) en vue de la réception d'un élément de fixation de montage, et
    • une couche épaisse (90) du matériau de revêtement (80) recouvre les extrémités (52a, b) de la partie centrale de la partie supérieure de la deuxième partie et établit une partie de liaison (94) à travers une partie supérieure de l'ouverture de réception de la sangle (35), la partie de liaison (94) supportant une protubérance de verrouillage interne (112), la couche épaisse enveloppant également les côtés (42a, b) et la partie inférieure (44) de la deuxième partie du noyau (30), réduisant la taille de la première ouverture et établissant une surface de support solidaire (92) sur laquelle peut glisser la sangle de la ceinture de sécurité (22);
    • la couche épaisse (90) englobant, près de chacune des extrémités (52a, b) et à travers la partie de liaison (94), des surfaces de transition (100a, b, c), chaque surface de transition (100a, b) englobant un gradin ou un épaulement (104) évidé au-dessous d'une première surface ou d'une surface avant (102) de la couche épaisse (90);
    • une charnière (150) formée de manière solidaire à partir du matériau de revêtement, s'étendant à partir du matériau de revêtement (80) autour de la première partie (34);
    • un couvercle (170) formé de manière solidaire à partir du matériau de revêtement, s'étendant vers l'extérieur à partir de la charnière et englobant une surface avant (172) comportant une partie supérieure (174), reliée à la charnière, des parties latérales (176a, b) et une partie inférieure (178);
    • la partie inférieure (178) du couvercle (170) étant formée de sorte que lorsque le couvercle (170) est verrouillé dans sa position, la partie inférieure s'engage dans le gradin (104) sur chaque surface de transition (100a, b, c), la surface avant (172) du couvercle (170) étant en général coplanaire à la première surface (102) de la couche épaisse (90); et
    • le couvercle (170) englobant en outre un moyen de verrouillage (184), pouvant s'engager dans la protubérance de verrouillage (112) pour verrouiller le couvercle dans sa position.






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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