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
  • B60R22/02—Semi-passive restraint systems, e.g. systems applied or removed automatically but not both ; Manual restraint systems
  • B60R22/03—Means for presenting the belt or part thereof to the wearer, e.g. foot-operated
• • 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
  • B60R22/18—Anchoring devices
  • B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
  • B60R22/1952—Transmission of tensioning power by cable; Return motion locking means therefor
• • 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
  • B60R22/18—Anchoring devices
  • B60R2022/1806—Anchoring devices for buckles
• • 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
  • B60R22/18—Anchoring devices
  • B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
  • B60R22/1951—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by arrangements in vehicle or relative to seat belt
• • 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
  • B60R22/18—Anchoring devices
  • B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
  • B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators
  • B60R22/1955—Linear actuators

Definitions

• the invention relates to a belt buckle device for a vehicle seat with the features of the preamble of claim 1.
• the invention is based on the object of improving a belt buckle device of the type mentioned. This object is achieved by a belt buckle device with the features of claim 1. Advantageous refinements are the subject of the subclaims.
• the position of the pretensioner unit is variable relative to the support in the longitudinal direction of the transmission means, in addition to the belt pretensioner function, a comfort position which is further extended compared to the starting position of the belt buckle and in which the belt buckle is more easily accessible can be provided.
• the belt buckle is then moved back to the starting position.
• the transmission means ie the buckle, transmission means, pretensioner unit and support lie in series with regard to the force flow occurring when the belt is tightened and when the belt is stressed, ie for the two possibilities of tensioning the belt (crash, comfort) is a serial solution.
• the transmission means is tensile, pressure-resistant and flexible, whereby a spring or another energy store can keep the buckle upright.
• the position of the tensioner unit is preferably variable by a motor, i.e. motor-driven, on the one hand to define a certain movement and on the other hand to increase comfort.
• a motor i.e. motor-driven
• the support of the tensioning unit is preferably mounted in a structurally fixed housing, which preferably still accommodates the motor and on which the belt buckle is supported, for example via a deflection and the spring mentioned.
• the structurally fixed attachment of the housing can take place, for example, on the seat frame, on the upper rail, on the lower rail or on the vehicle structure.
• the support is designed as a spindle nut which is rotatably mounted in the housing and is driven by the motor and into which a spindle is screwed in, as a result of which the motor rotation can be converted into a displacement of the tensioner unit with simultaneous reduction.
• the spindle can be a component of the tensioner unit, i.e. of the punctuator housing, or be optionally specially designed and rest or be attached to the puncturing housing.
• the transmission means is preferably guided through the then hollow spindle.
• the invention is applicable to all vehicle seats with belt tensioners. Depending on the control system and existing sensors, various situations, such as sitting in, opening the door, switching off the engine or a crash, can lead to the comfort position being adopted.
• 3 is a side view of the embodiment in the comfort position
• Fig. 5 is a schematic side view of a vehicle seat
• Fig. 6 shows a section through the embodiment in the starting position.
• a belt buckle device 1 for a vehicle seat 3 of a motor vehicle is attached to the vehicle seat 3 in a structurally fixed manner on the tunnel side and serves to releasably fasten a seat belt 5 of the vehicle seat 3.
• the arrangement of the vehicle seat 3 within the motor vehicle and its usual direction of travel define the directional information used below.
• the belt buckle device 1 has an elongated housing 11, the longitudinal direction of which is in the direction of travel, and a pyrotechnic tensioning unit 13, which is movable in the longitudinal direction and is partially arranged within the housing 11 and otherwise projects forward.
• the belt buckle device 1 also has a deflection 15 attached to the rear end of the housing 11, a spring 17 formed as a coil spring projecting obliquely upwards and forwards from the deflection 15 and a belt buckle 19 arranged at the upper end of the spring 17 for receiving a belt tongue of the seat belt 5 on.
• the transmission means 21 thus acts between the tensioning unit 13 and the belt buckle 19, which is in the longitudinal direction of the transmission means 21 is movably and transversely attached to the housing 11.
• a bellows 23 attached between the belt buckle 19 and the deflection 15 and which is arranged around the spring 17 protects against dirt and other external influences.
• a motor 25 is mounted in the housing 11 and is in gear connection with a spindle nut 29 by means of a spur gear stage 27.
• the spindle nut 29 is screwed onto a non-rotating, hollow spindle 31, which forms a rear part of the tensioner unit 13 and through which the transmission means 21 is guided to the rear.
• the belt buckle device 1 performs the known belt tensioning function in the event of a crash, i.e. the tensioner unit 13 ignites, and a part of the same moves forward, supported on the part connected to the spindle 31, pulling the belt buckle 19 downward against the force of the spring 17 via the transmission means 21.
• This crash position is shown in FIG. 4.
• the seat belt 5 latched onto the buckle 19 is tightened, i.e. Any belt slack that may be present is eliminated so that the occupant moves as little as possible forward.
• the seat belt buckle device 1 also has a comfort function due to a change in position of the tensioning unit 13. If an occupant takes a seat on the vehicle seat 3, which is reported by seat occupancy detection sensors, the motor 25 is actuated so that it pushes the spindle 31 backwards via the spindle nut 29 , The entrained tensioning unit 13 also moves the transmission means 21 to the rear so that the spring 17 can use the released way to extend the belt buckle 19 further, as shown in FIG. 3. The belt buckle 19 is thereby more easily accessible to the occupant. As soon as the seat belt 5 is fully fastened, the motor 25 moves the spindle 31 forward, ie the belt buckle 19 is retracted again until the optimal belt course has been reached and the belt slack has been eliminated. In a "postsafe" -capable modification, the belt buckle 19 is, as far as possible, also brought into the comfort position by the motor 25 after the crash, in order to improve the accessibility to the rescue of the occupant.

Landscapes

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

Priority Applications (4)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=33494847

Family Applications (1)

Country Status (5)

Cited By (7)

Families Citing this family (17)

Citations (4)

Family Cites Families (25)

• 2003
  • 2003-06-05 DE DE10325473A patent/DE10325473A1/de not_active Ceased
• 2004
  • 2004-05-26 WO PCT/EP2004/005632 patent/WO2004108487A1/de not_active Ceased
  • 2004-05-26 JP JP2006508203A patent/JP2006526536A/ja not_active Withdrawn
  • 2004-05-26 DE DE502004004193T patent/DE502004004193D1/de not_active Expired - Fee Related
  • 2004-05-26 EP EP04734819A patent/EP1628859B1/de not_active Expired - Lifetime
• 2005
  • 2005-11-22 US US11/284,857 patent/US7178835B2/en not_active Expired - Fee Related

Patent Citations (4)

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