Tongue assembly

• US 4,878,271 A
• Filed: 10/13/1988
• Issued: 11/07/1989
• Est. Priority Date: 10/13/1988
• Status: Expired due to Fees

• Current Assignee: TRW Vehicle Safety Systems Incorporated Lyndhurst Cuyahoga Ohio
• Original Assignee: TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Kitokovsky, Alexander P.
• Primary Examiner(s): Sakran, Victor N.
• Application Number:
  US07/256,983
• Time in Patent Office: 390 Days
• Field of Search: 24/194, 24/196, 24/171, 297/482, 297/483, 297/476
• US Class Current: 24/194
• CPC Class Codes: A44B 11/10 sliding wedge
• CPC Class Codes: A44B 11/2557 with strap length adjustment
• CPC Class Codes: A44B 11/2561 Tongue elements
• CPC Class Codes: B60R 2022/1812 Connections between seat belt and buckle tongue
• CPC Class Codes: B60R 22/30 Coupling devices other than buckles, including length-adjusting fittings or anti-slip devices adaptations of manual three-point seat belt systems for use by small passengers using other means than belt anti-slip devices B60R22/024; buckles A44B11/00; releasable fastenings in general F16B
• CPC Class Codes: Y10T 24/4079 Sliding part of wedge
• CPC Class Codes: Y10T 24/4084 Looped strap

Abstract

An improved tongue assembly is used in a safety apparatus having a belt for restraining movement of an occupant of a vehicle. The tongue assembly includes a base having an opening through which the belt extends. A metal bar spans the opening in the base so that the belt extends through the opening, across the bar and back through the opening. A cover interconnects the base and opposite end portions of the bar. The belt engages an intermediate portion of the bar. In one embodiment of the invention, the bar and cover are slidable together relative to the base. In another embodiment of the invention, the bar slides relative to the cover and the base.

Claims

1. A tongue assembly for use in a safety apparatus having a belt for restraining movement of an occupant of a vehicle, said tongue assembly comprising:

a base having an opening through which the belt can extend;

a bar spanning the opening in said base and enabling the belt to extend through the opening, across the bar and back through the opening, said bar having first and second end portions and an intermediate portion disposed between said first and second end portions, said intermediate portion of said bar having surface means for engaging the belt, said bar being slidable relative to said base to enable said intermediate portion of said bar to engage the belt and press the belt against the base; and

a cover supported on said base and engaging said first and second end portions of said bar to retain said bar on said base and to guide movement of said bar relative to said base, said cover being spaced from the surface means of said intermediate portion of said bar.

2. A tongue assembly as set forth in claim 1 wherein said cover is fixedly connected to said base and said bar is slidable relative to said cover and said base.

3. A tongue assembly as set forth in claim 1 wherein said bar has a longitudinally extending groove which is at least partially defined by first and second longitudinally extending flange sections which extend outwardly from a bottom portion of the groove, said surface means being disposed on said first and second flange sections to enable said surface means to engage the belt on opposite sides of the groove and to hold the belt out of engagement with the bottom portion of the groove so that the belt spans the groove to thereby minimize sliding friction between the belt and said bar.

4. A tongue assembly for use in a safety apparatus having a belt for restraining movement of an occupant of a vehicle, said tongue assembly comprising:

a base having an opening through which the belt can extend;

a bar spanning the opening in said base and enabling the belt to extend through the opening, across the bar and back through the opening, said bar having first and second end portions and an intermediate portion disposed between said first and second end portions, said intermediate portion of said bar having surface means for engaging the belt; and

a cover supported on said base and engaging said first and second end portions of said bar to retain said bar on said base, said cover being spaced from the surface means of said intermediate portion of said bar, said bar being slidable relative to said base to enable said intermediate portion of said bar to engage the belt and press the belt against the base;

said cover including a first guide section which engages both said base and said first end portion of said bar and guides movement of said first end portion of said bar relative to said base, a second guide section which engages both said base and said second end portion of said bar and guides movement of said second end portion of said bar relative to said base, and a connector section extending between said first and second guide sections, said connector section being spaced from the surface means of said intermediate portion of said bar to enable the belt to engage the surface means of said intermediate portion of said bar.

5. A tongue assembly as set forth in claim 4 wherein said base includes a first end portion adapted to be engaged by a buckle and a second end portion opposite from said first end portion, said connector section of said cover being disposed in abutting engagement with said second end portion of said base so that the belt can extend through the opening between said connector section and said bar.

6. A tongue assembly for use in a safety apparatus having a belt for restraining movement of an occupant of a vehicle, said tongue assembly comprising:

a base having an opening through which the belt can extend;

a bar spanning the opening in said base and enabling the belt to extend through the opening, across the bar and back through the opening, said bar having first and second end portions and an intermediate portion disposed between said first and second end portions, said intermediate portion of said bar having surface means for engaging the belt; and

a cover supported on said base and engaging said first and second end portions of said bar to retain said bar on said base, said cover being spaced from the surface means of said intermediate portion of said bar, said bar being slidable relative to said base to enable said intermediate portion of said bar to engage the belt and press the belt against the base;

said cover including a first guide section which engages both said base and said first end portion of said bar and guides movement of said first end portion of said bar relative to said base and a second guide section which engages both said base and said second end portion of said bar and guides movement of said second end portion of said bar relative to said base, said first and second guide sections being dimensioned relative to the belt such that when the belt extends across the bar said guide sections project outwardly from said bar for a distance which is greater than the thickness of the belt and are spaced apart a distance which is at least as great as the width of the portion of the belt extending across said bar.

7. A tongue assembly for use in a safety apparatus having a belt for restraining movement of an occupant of a vehicle, said tongue assembly comprising:

a base having an opening through which the belt can extend;

a bar spanning the opening in said base and enabling the belt to extend through the opening, across the bar and back through the opening, said bar having first and second end portions and an intermediate portion disposed between said first and second end portions, said intermediate portion of said bar having surface means for engaging the belt; and

a cover supported on said base and engaging said first and second end portions of said bar to retain said bar on said base, said cover being spaced from the surface means of said intermediate portion of said bar, said bar being slidable relative to said base to enable said intermediate portion of said bar to engage the belt and press the belt against the base;

said cover being connected to said end portions of said bar so that the cover and said end portions are slidable together relative to said base.