Seat belt guide

Abstract: A seat belt guide (10) for a vehicle having a rear seat shoulder belt (14) allowing for adjustment of the routing of the shoulder belt (14) for smaller than average passengers comprises a C-shaped guide (24) pulled towards the side trim (18) of the vehicle (12) by means of a tether or elastic cord (26) anchored to the side trim (18). The C-shaped guide (24) can be connected to the shoulder belt (14) and may be removed therefrom when not in use. A tab (34) is mounted to the vehicle side trim (18) adjacent the rear seat back cushion (16) and is designed to retain the C-shaped guide (24) when not in use while also being hidden from view from the vehicle's passenger compartment (12).

Description: The present invention relates to a seat belt guide for adjusting the positioning of a vehicle seat belt. It is well known to provide passenger compartments of vehicles with a seat belt for the rear seats which comprises a shoulder belt in combination with a lap belt. The lap belt lies across the lap or waist of the passenger while the shoulder belt passes across the torso and shoulder of the passenger. It is known to utilise an anchor ring extending through a seat back for re-routing the path of the shoulder belt. It is also known to use a strap in conjunction with an elastic self-retracting feature for relieving the tension on the shoulder belt. FR-A-2554067 describes an arrangement in accordance with the preamble of claim 1. The present invention seeks to provide an improved seat belt guide. A seat belt guide in accordance with the present invention is characterised by the features specified in the characterising portion of claim 1. Preferably, there is provided a detachable and slidable shoulder belt guide in conjunction with an elastic cord which can adjust the routing of a shoulder belt over a passenger's torso while also providing means to store the shoulder belt guide in a non-visible location when not in use. In a preferred embodiment, there is provided a rear seat shoulder belt guide which can adjust the routing of a rear seat shoulder belt to extend or travel across the torso and shoulder of a passenger. The shoulder belt guide of this embodiment fits over the shoulder belt and can slide along the shoulder belt so as to adjust for different sized passengers. This shoulder belt guide is also detachable from the shoulder belt so as to accommodate passengers who do not wish to utilise the guide. A tab designed to have the guide snugly slide over the tab and to retain the guide in a stored position when the guide is not in use is provided. The tab may be mounted to a side trim adjacent to the rear seat back cushion so as to be hidden from view from the passenger compartment. In the preferred form, the guide is fitted in a vehicle having a rear seat back cushion adjacent to a side trim and having a shoulder belt extending from a retractor at the top of the rear seat back cushion to a seat belt buckle at the bottom of the rear seat back cushion. A tab is preferably pivotally connected to the side trim adjacent the rear seat back cushion. The back cushion may cover the tab, thereby hiding the tab from view from the passenger compartment. An elastic cord may also be pivotally connected to the side trim at one of its ends while having its other end pivotally connected to a C-shaped guide. The shoulder belt is inserted through an opening in the C-shaped guide so that the C-shaped guide wraps around the shoulder belt. The friction fit of the C-shaped guide allows the C-shaped guide to slide along the length of the shoulder belt to adjust for different sized passengers. The length of the elastic cord is preferably designed to pull the C-shaped guide towards the side trim, thereby adjusting the routing of the shoulder belt over the passenger's shoulder. The C-shaped guide may be detached from the shoulder belt and retained on the tab. The tab is preferably designed such that the opening provided in the C-shaped guide snugly slides over the tab so as to retain the C-shaped guide in a stored position when not in use. The preferred embodiments may provide a seat belt guide which is detachably and slidably connected to a shoulder belt to allow for adjustment of the routing of the shoulder belt; which provides for the retention of the C-shaped guide in a stored position when the C-shaped guide is not in use; and which can be hidden from the passenger compartment's view when in the stored position. An embodiment of the present invention is described below, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of an embodiment of guide coupled to a rear seat shoulder belt in a passenger compartment of a vehicle; Figure 2 is a perspective view of the guide of Figure 1; Figure 3 is a sectional view of the guide of Figure 1 taken along line 3-3 of Figure 2; Figure 4 is a perspective view of the guide of Figure 1 in a stored position and attached to the rear seat back cushion of a vehicle; Figure 5 is a perspective view of the guide of Figure 1 in a released position; and Figure 6 is a perspective view of the guide of Figure 1 coupled to a rear seat shoulder belt. Referring to Figure 1, the embodiment of seat belt guide 10 shown, is fitted in a vehicle 12 containing a rear seat shoulder belt 14, a rear seat back cushion 16, and a side trim 18. The rear seat shoulder belt 14 extends from a retractor 20 at the top of the rear seat back cushion 16 to a buckle 22 at the bottom of the rear seat back cushion 16. The C-shaped guide 24 (best seen in Figure 3) connects to the shoulder belt 14 and is pulled towards the side trim 18 of the vehicle 12 by means of a tether or elastic cord 26 anchored to the side trim 18. By pulling the shoulder belt 14 towards the side trim 18, the routing of the shoulder belt 14 is adjusted to pass over a passenger's shoulder and torso 28. The elastic cord 26 can stretch to allow the passenger 28 to move freely. As seen in Figure 2, the C-shaped guide 24 of the seat belt guide 10 is pivotally connected to one end 30 of the elastic cord 26. The other end 32 of the elastic cord 26 is pivotally connected to the side trim 18 of the vehicle 12. In the preferred embodiment, the elastic cord 26 and a tab 34 are pivotally connected to the side trim 18 of the vehicle through a common axis 36 of a push-in plastics retainer 38, as seen in Figure 3. When in use, the C-shaped guide 24 wraps around the rear seat shoulder belt 14 and is pulled towards the side trim 18 by the elastic cord 26, which has a length designed such that the elastic cord 26 stretches and provides an elastic retention force on the C-shaped guide 24, as seen in Figure 6. When not in use, the C-shaped guide 24 is designed to slide snugly over the tab 34, thereby retaining and establishing a stored position for the C-shaped guide 24, as seen in Figure 4. The C-shaped guide 24 is fabricated from a moulded plastics and formed into a rounded corner rectangular shape having a C-shaped cross-section, as seen in Figure 3. The C-shaped guide 24 provides a small opening 40 between a pair of legs 42, 44 having opposing ends 46, 48 with one of the legs 42 being shorter than the other leg 44. The small opening 40 leads into a larger compartment 50 thus allowing the shoulder belt 14 to be folded and inserted through the smaller opening 40 and unfolded into the compartment 50. By having the pair of legs 42,44 of the C-shaped guide 24 extend over the shoulder belt 14, the shoulder belt 14 is retained within the compartment 50 of the C-shaped guide 24. The short leg 42 of the C-shaped guide 24 has a rib or shelf 52 moulded integrally with the short leg 42 and extending outwardly of the compartment 50. The rib 52 has a hole 54 extending through the end 46 of the short leg 42 of the C-shaped guide 24. A slot 56 is provided in the rib 52 of the short leg 42 and intersects the hole 54 in the short leg 42. The slot 56 has two widths 58,60; a larger width portion 58 starting towards the end 46 of the small leg and extending through the short leg 42 and a smaller width portion 60 integral with the larger width portion 58 and extending away from the end 46 of the short leg 42 towards a rounded corner 62 of the C-shaped guide 24. The elastic cord 26 has one of its ends 30 extending through the hole 54 in the end 46 of the short leg 42 of the C-shaped guide 24, and into the larger width portion 58 of the slot 56 provided in the short leg 42. A metallic retainer cap 64 is crimped or swaged onto the end 30 of the elastic cord 26 and is designed such that it fits within the larger width portion 58 of the slot 56 while being larger than the smaller width portion 60 of the slot 56. The retainer cap 64 is also larger than the hole 54 in the short leg 42 thus allowing the retainer cap 64 to be secured within the larger width portion 58 of the slot 56, thereby securing the elastic cord 26 to the C-shaped guide 24. The retainer cap 64 is substantially circular, thereby allowing it to pivot and rotate within the larger width portion 58 of the slot 56 in the C-shaped guide 24. The other end 32 of the elastic cord 26 is folded back and sewn to a portion 66 of the elastic cord 26 to form a loop 68 at the end 32 of the elastic cord 26, as seen in Figures 2 and 3. As seen in Figure 3, the loop 68 of the elastic cord is mounted between the side trim 18 of the vehicle 12 and the tab 34. A hole 70 extends through the side trim 18 and is in common alignment with a hole 72 extending through the tab 34 and the opening 74 provided in the loop 68 of the elastic cord 26. The plastics push-in retainer 38 is inserted through the commonly aligned holes 70,72 and opening 74 so as to provide a common axis 36 and a pivotal connection for the elastic cord 26 and the tab 34 relative to the side trim 38. The elastic cord 26 and the tab 34 do not need a common retainer 38. The elastic cord 26 and tab 34 could be secured to the side trim 18 separately, yet still being close enough together for the C-shaped guide 24 to slide onto the tab 34 and attain a stored position. The tab 34 is moulded from a plastics material and has a substantially elliptical shape. The tab 34 has a first end 76 and a second end 78, the first end 76 providing the hole 72 where the push-in fastener 38 is inserted. The first end 76 of the tab 34 also provides a lip 80 integral with and extending from the first end 76 of the tab 34, as seen in Figure 3. The lip 80 extends towards the side trim 18 of the vehicle 12 and provides a recess 82 in the centre of the inside radius of the lip 80. A portion 84 of the loop 68 in the elastic cord 26 is seated within the recess 82 of the lip 80 causing the edge of the lip 80 to extend over the portion 84 of the loop 68 seated in the recess 82. By having the push-in retainer 38 inserted through the hole 72 of the tab 34 and through the opening 74 in the loop 68 of the elastic cord 26, the loop 68 is captured in the recess 82. The push-in retainer 38 has an expanded barrel 86 which prevents the retainer 38 from becoming disassembled from the tab 34 and the loop 68 of the elastic cord 26. This ensures that the elastic cord 26 will be secured to the retainer 38 and the tab 34 during shipping as the retainer 38, tab 34 and elastic cord 26 are typically assembled prior to shipping. As seen in Figure 2, the tab 34 is also provided, on opposing sides thereof, with a pair of recesses 88, 90 starting from ends 92, 94 of the lip 80 and extending to the sides 96, 98 of the tab 34. The recesses 88, 90 start with their deepest penetration into the tab 34 at the ends 92, 94 of the lip 80 and taper towards the sides 96, 98 of the tab 34. The recesses 88, 90 are utilised when a passenger 28 pulls the elastic cord 26 to rotate the tab 34 to a more favourable position for accessing the tab 34 and C-shaped guide 24. The tab 34 is designed to fit snugly within the compartment 50 provided in the C-shaped guide 24 so as to place the guide 24 in a stored position when not in use, as seen in Figure 4. By having the C-shaped guide 24 retained on the tab 34 and by having the tab 34 mounted to the side trim 18 adjacent the rear seat back cushion 16, the rear seat shoulder belt guide 24 is hidden from view from the passenger compartment when in the stored position. When the passenger 28 decides to utilise the rear seat shoulder belt guide 10, the elastic cord 26 is pulled by the passenger 28 and the tab 34 is rotated to a more favourable position for removing the C-shaped guide 24 from the tab 34, as seen in Figure 5. The shoulder belt 14 is then inserted through the smaller opening 40 of the C-shaped guide 24 and extended within the compartment 50 of the C-shaped guide 24, as seen in Figure 6. The elastic cord 26 has a length designed to apply the proper elastic retention force for pulling the shoulder belt 14 towards the side trim 18 of the vehicle 12, thus adjusting the routing of the shoulder belt 14. This provides a more comfortable routing of the shoulder belt 14 for passengers 28 by ensuring that it extends over the shoulder and torso of the passenger 28. When the passenger 28 decides not to utilise the C-shaped guide 24, the passenger 28 can disconnect the C-shaped guide 24 from the shoulder belt 14 and slide the C-shaped guide 24 over the tab 34. The tab 34 may then be concealed by rotating it behind the rear seat back cushion 16. During hard braking of the vehicle 12, the elastic cord 32 will stretch upon the locking of the retractor 20, thereby preventing any damage to the rear seat shoulder belt guide 10. The seat belt guide may be used with any part of a seat belt, not just a shoulder belt.

Claims: A seat belt guide for adjusting the positioning of a vehicle seat belt comprising a C-shaped guide (24) including a chamber (50) within which a seat belt is removably receivable and slidable within the chamber; a tether (26) operable to connect the guide to a vehicle support (18) and to apply a biasing force to adjust the positioning of the seat belt; characterised by a tab (34) connectable to the vehicle support and removably receivable within the chamber; and in that the chamber is shaped and sized so as to make a friction fit with the seat belt when received therein or the tab when received therein. A seat belt guide according to claim 1, wherein the tether comprises an elastic cord (26) having a first end (32) pivotably connectable to the vehicle support (18) and a second end (30) pivotably connected to the C-shaped guide (24). A seat belt guide according to claim 1 or 2, comprising a fastener (86) insertable through an aperture in the vehicle support (18) and a hole provided in the tab (34) and operable to connect the tab pivotably to the vehicle support. A seat belt guide according to claim 3, wherein the tether (26) is sewn to form a loop (68) within which the fastener (86) is receivable so as to couple the tether pivotably to the vehicle support (18). A seat belt guide according to any preceding claim, wherein the C-shaped guide (24) includes a bore (54) through which the tether (26) extends, a retainer cap (64) being connected to the tether so as to retain the tether pivotably on the C-shaped guide. A seat belt guide according to any preceding claim, wherein the tab (34) is substantially elliptical. A seat belt guide according to any preceding claim, wherein the tab (34) includes a lip (80) integral with and extending from a first end (76) of the tab, the lip including opposing ends and a first recess (82) between said opposing ends for capturing a portion of the tether (26). A seat belt guide according to claim 7, wherein the tab (34) includes a pair of second recesses (88,90) in opposing sides of the tab and extending from the lip (80), the tether (26) being receivable in one of the second recesses and in use contacting one of the opposing ends of the lip when pulled so as to rotate the tab in the direction in which the tether is pulled.

Inventors: CHES GREGORY SCOTT, LOOSE RICHARD DONALD, WENDZINSKI MICHAEL JOHN, ZAWISA KENNETH MICHAEL, CHES, GREGORY SCOTT, LOOSE, RICHARD DONALD, WENDZINSKI, MICHAEL JOHN, ZAWISA, KENNETH MICHAEL
Applicants: GEN MOTORS CORP, GENERAL MOTORS CORPORATION
Application year: 1993
Main classification: B60R22
IPC codes: B60R22