DE2409943A1 - SEAT FOR A MOTOR VEHICLE - Google Patents

Description

Seat for a power fall g

The invention relates to a seat for a motor vehicle with a generally horizontally extending seat part, with a backrest, with a safety belt and having means mounted in the seat that normally keep the seat belt stationary relative to the seat.

It is generally accepted that the use of seat belts the incidence of injuries in the event of a collision of a motor vehicle is greatly reduced and can also reduce the extent and severity of these injuries. Generally un.-give at

409838/0742

BcnU.-M.len: H. Aufhäut-v. .Vünchon 173533 · Dcufith «Bank, MüncKm It'25078 · Po <üc!" VUi3r.! O Mi'ndic-ii 1i? L / - ^s Jl BLZ 700Sie, CD BU VOS / 00 10 C17 7.-.- 'j> .0

a motor vehicle safety belts, \ y _e ± absorbs the energy released in the Körjjer a passenger, wherein the terminal ends of the belts of the type to be attached to a relatively low yielding, stationary part of the motor vehicle by means of a fastening device. However, this installation of seat belts has the disadvantages listed below.

First, a passenger must be the length of a seat belt adjust so that the belt has an illegal function in the event of a collision can exercise once a seat is adjustable along the longitudinal direction of the Motor vehicle is moved.

Second, this part of the construction, e.g. the body of the motor vehicle to which the seat belt is attached.

Thirdly, because of the complicated work processes, the effort involved in the manufacture of motor vehicles is increased. '*

The invention is therefore based on the object To create a seat for a motor vehicle of the specified type, in which the above-mentioned disadvantages do not appear.

This object is achieved according to the invention in that the Einrichtimg the seat belt on the body of a Can attract passenger, who is held by the horizontal seat part and the backrest.

409838/0747

The advantages achieved by the invention are in particular that a seat for an ICr aft vehicle is created which is adapted to be worn with a multiple seat belt for a seat user Passenger can be provided. Furthermore, a device is provided in the seat of the motor vehicle, which is expanded and designed so that it holds the associated multiple seat belt, on the other hand however, does not affect the appearance of the seat. In addition, without any modification of the conventional seat guide and the clamping and fastening mechanism of the seat according to the present invention Invention to be attached to your floor of the motor vehicle. As the seat belt tightening device While a seat unit can be fitted in the seat during the manufacture, the effort continues to be incurred and greatly reduces the complexity of installing the seat belt. In addition, there is no need for an amplified in the motor vehicle Part to be provided for the seat belt. And finally, it doesn't spoil the look of the seat, because the tensioner for the seat belt is fixed in the seat.

The invention will be described in the following on the basis of exemplary embodiments with reference to the attached, schematic Drawings explained in more detail.

Show it:

Figure 1 is a side view of a partially cut-open motor vehicle and a seat with a associated multiple safety belt, vroboi a first, preferred embodiment of the present invention shown * »* 8 * 09838/07 *?

FIG. 2 shows an enlarged view of the seat shown in FIG. 1;

Figure 3 is a front view of the seat shown in Figure 1;

FIG. 4 is a view similar to FIG. 2, but with a second preferred embodiment of FIG present invention is illustrated;

Figure 5 is a sectional view of an element that hold the associated seat belt stationary relative to the seat shown in FIGS can j and

FIG. 6 is a sectional view of an element which holds the associated seat belt relative to the one in FIG Fig. 4 can hold the seat shown stationary.

In ^ ig. 1 of the drawings is a motor vehicle, e.g. a passenger car 10 is shown having a seat 12; this seat is on conventional V / an on attached to a floor (no reference number) of the motor vehicle. The seat 12 has a generally horizontally extending seat part l4 and a back supporting part l6 (will be described in the following There is also a seat belt l8, which can consist of several parts, for the Person (no reference number) provided who is in the vehicle fahrzetig on the seat.

The Mohrfach safety belt l8, which is a conventional Structure, contains a lap belt 2o and

409838 / 07Λ?

a shoulder belt 22. One end of the seat belt is fastened to the horizontal lk Sitztoil box 2k. A roller or drive pulley 26 is attached to the horizontal seat part ί ^ι ϊ and another roller or drive pulley on the part l6 that supports the back of the passenger. The lap belt 20 extends through the roller 26 into the horizontal seat part ΐΛ, while the shoulder belt 22 extends through the roller 28 into the backrest 16, as shown in FIGS. 1, 2 and 3. Numeral 30 denotes a conventional coupling arrangement. One connection end of the pelvic cover 20 and the upper connection end are held stationary relative to the seat 12 by suitable means; These devices are fastened in the horizontal seat part 14 in the position 32 shown and in the backrest 16 in the position 3'J: shown to be tightened and stretched over the passenger's body.

In Fig. 5, a cylinder 36 is shown, which is used in the seat 12 \ ^r and mounted in the horizontal seat part Ik in the position 32 shown and m of the backrest 16 in the position 3 ^ shown. A piston 38 in dom cylinder 36 has a piston rod hO . The piston 38 and the piston rod kO define an annular chamber k2 in the a3.1get, which is filled with a gas under pressure; the piston 38 defines a chamber 4'i which is filled with a hydraulic oil; as an alternative to this, this chamber kk axch can be filled with a gas under pressure.

409838/0742

The piston 30 is normally located in the illustrated Position while the piston rod 4O at the upper connection end of the shoulder belt 22 or a Connection end of the lap belt 20 is attached and fixed.

Uta the appropriate part of the multiple seat belt tensioning and tightening l8 is a safety or relief valve 46 is provided in a drain line 48, which is in open communication with the chamber 44. The relief valve 46 is in the drawing shown only schematically; it should be so constructed, and have such a mode of action, that normally the free flow through the drain line 48 is prevented, but on the other hand in the event of a collision of the motor vehicle 10, the free flow through the valve becomes possible.

If the safety valve 46 is opened during operation in the event of a collision of the motor vehicle 10, then the piston 38 under the pressure dos in the general annular chamber 42 located gas in the direction driven, which is indicated by an arrow F. This movement becomes the associated connection end of the multiple seat belt l8 tightened.

It can therefore be seen that the mean under pressure Standing gas in the chamber 44 a faster movement of the piston 38 when the safety valve 46 opens In comparison to the Fctll it is possible that hydraulic oil located in the chamber 44.

409833/074?

• t 7 ··

According to a first embodiment, two devices, as shown in FIG. 5, are required for a multiple seat belt 18 with three connecting ends. According to a second embodiment, which will be described in the following with reference to FIGS. H and 6, only one device, which is shown in FIG. 6, will, however, fulfill the same function for a seat belt. '

According to FIGS. H and 6, one end of a ceiling strap 20 is attached at 2h to a horizontally extending seat part lk. An additional roller or drive pulley 50 is provided in the horizontally extending seat part 14. The lap belt 20 extends vertically through the roller 50, as can be seen from the illustration, in particular in FIG. The shoulder strap 22 passes through the pulley 28 in a manner similar to that shown in FIG the backrest l6 is fastened in the position 52 shown.

As can be seen in particular from Fig. 6, a first piston 56 in a cylinder 5 ^l i has a piston rod 58 and a second piston 60 has a piston rod 62. The pistons 50 and 60 define in the space between them a Carinthian 64, which with a Hydraulic oil is filled; as an alternative, it can also be filled with a pressurized gas; piston 56 and piston rod 58 define a first, generally annular chamber 66 which is filled with a pressurized gas. piston 60 and piston rod 62 define a second, generally annular chamber 66.

409838/0742

förinige chamber 68, which is also with a pressurized standing gas is filled. The first piston rod 58 is attached and fixed to the lap belt 20 and the second piston rod to the shoulder belt 22. A Safety valve 46 is disposed in a drain line which is in open communication with chamber 64 stands. The safety valve is used to prevent free flow through the drain line 46 in the event of a To enable collision of the motor vehicle.

In the event of a collision, the first two will Pistons 56 and 60 driven in the directions indicated by arrows F and F. This movement the piston 56 and 60 - becomes the associated ends of the multiple seat belt l8 tension and tighten.

Although the present invention is described in the context of a multiple seat belt, the Has three connection ends, the present invention can also be used in a seat belt with two Connection ends are used.

- patent claims -

0 9 8 3 0/0 7 L ?

Claims (8)

C _ claims 1. Seat, for a motor vehicle with a generally ^ _ ^ liorizontal seat part, with a backrest, with a seat belt and with a device mounted in the seat that normally uses the seat belt holds stationary relative to the seat, thereby characterized in that the device (32, 34,52) attaches the seat belt (l8) to the body of a passenger that of the horizontal seat part (1Λ) and the backrest (l6) is held. 2. Seat according to claim I _1, characterized in that the seat belt (l8) has first, second and third connection ends, the first connection end being attached to the horizontal seat part (l4), that the device (32,3 ^) is a first Has element (32) which is fixed in the horizontal seat part (14) and is constructed so that it normally holds the second connection end stationary relative to the seat (12), and a second element (Jk) which is attached to the backrest ( l6) is attached and configured to normally hold the third connector end stationary relative to the seat (l6), the first and second members being able to tighten the seat belt (l8) on the passenger's body. 3 * seat according to claim 1, characterized net that the seat belt (l8) first, second and has third connection ends, the first connection "-, end is attached to the horizontal seat part (l4), and that the device is in the form of a single element (52) that on the backrest (l6) 409838 / 07Λ? attached and constructed, that it is normally the second and third terminals relative to the The seat (12) is stationary, the individual element (52) don the seat belt (l8) on the body of the Can attract passenger. 4. Seat according to one of claims 1 to 3> in that at least one roller (26, 28, 50) on the seat (12) for guiding the seat belt (l8) is attached. 5 · Seat according to one of claims 1, 2 or 4, characterized characterized in that the first and second Element (32, 34) secured in the seat (12) Cylinder and a piston (38) in the cylinder (36) with a piston rod (4θ), the piston (38) and the piston rod (40) in the cylinder (36) are generally annular, pressurized Defining gas-containing chamber (42), and wherein the piston (38) in the cylinder (36) is a fluid medium containing chamber (44) which defines the rest position of the piston (38), wherein the piston rod (4θ) at the associated one of the second and third connection ends of the seat belt (l8) is attached and fixed, and that the elements (32,34) continue to be a drain line (48), which is in open communication with that of the fluid medium containing! Chamber (44) stands, as well as a nortnalenreise has closed safety valve (46) in the drain line (48), which prevents a Durchflußuiuiig and im In the open state, a free passage enables the safety valve (46) to be opened. 409833/07 £? 6. Seat according to claim 5 »characterized that the chamber (44) containing the fluid medium of the elements (32,34) with a hydraulic ■ acting hydraulic fluid is filled. 7 · seat according to claim 5 dä by _f in that the chamber containing the fluid medium (44) of the elements (32,34) filled with a piece of fluid under Di ^ gas. 8. Seat according to claim 3 »characterized in that the single element (52) has one in de. the back-supporting backrest (16) mounted cylinder (54}, a first piston (56) in the cylinder (54) with a piston rod (58), and a second piston (60) in the cylinder (54) with a piston rod (62 ), the first piston (56) and its piston rod (58) having a first, generally annular, pressurized gas-containing chamber (66) in the cylinder (54) and the second piston (60) and its piston rod (62 ) define a second, generally annular, pressurized gas-containing chamber (68), the pistons (56, 60) between them define a fluid medium-containing chamber (64) which contains the lluhelago of the pistons (56, 60) defines that the piston rod (58) of the first piston ( ^ G) and the piston rod (62) of the second piston (60) are attached and fixed to the second and third connection ends of the seat belt (l8), respectively, and that the single element ( 52) one in open connection with which contains the fluid medium the chamber (64) standing discharge line and a normally closed safety valve (46) 409838/074? has in the drain line, which has a Durchströmuns prevented and a free Durchstroniung allowed in the open state, the safety valve can be opened. 409838/074? L..Ä.t.