DE1555734A1 - Seat, especially for motor vehicles with a continuously adjustable backrest - Google Patents

Description

Gebr. Happich GmbHPI

Seat j especially for motor vehicles, with in their Inclination continuously adjustable backrest.

The invention relates to a seat, in particular for Motor vehicles with a hinge axis that is continuously adjustable in inclination around a pivot axis mounted in the seat frame cheeks Backrest, which for one in the extension direction of the The backrest facing, outside the joint axis also acting on the seat frame adjusting spindle within a, of her interspersed abutment, which supports the backrest Stellrautter carries.

A known design of such seats has a single adjusting spindle arranged in the central plane of the backrest on, vrelche provided with self-running high helix thread is on which an adjusting nut sits, which supports the backrest by means of an otrebenrohres. The strut tube is telescopically slidable into one another and is of one Surrounding compression spring, which is under tension. A plague parking brake acting on the Cfcell nut locks the io the 'spindle.

009817/06 8 6

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BAD OAfG (NAL

Disclosure Records

- I - 12 131 March 5, 1969

The inclination of the backrest is changed in this type of seat by the fact that after the parking brake has been released by pressing against the backrest, it is resiliently brought into the desired inclination. You can neither achieve an adjustment from the vertical to the horizontal position for the purpose of a so-called reclining seat, nor this position and corresponding intermediate positions inevitably. Sufficient stability of the support of the backrest in flatter positions is also not achieved. The invention is based on the task of achieving an inevitable, continuously variable active inclination adjustment of the backrest in the area between the vertical and the horizontal backrest position in a seat of the generic type; also to provide a compact stable configuration of the adjusting device, and a ⁿ the form of a separate fitting designed training.

For this purpose, according to the invention, there is the abutment for the adjusting spindle running within the side cheeks arranged on the cheeks and the adjusting nut supported in the abutment has bevel teeth for engagement a ring gear, the shaft of which carries an actuating handwheel on the outside of the cheek.

009817/0686 BADORiGJNAL

Disclosure Records

12 131 March 5th 19β9

Advantageously, according to the invention, the on the side of the hinge axis that faces the seat cushion, the spindle is articulated between the hollow cheeks Extend the cheeks of the backrest.

Furthermore, it is advantageous if the invention on the _s

Circumferential surface between the thrust pieces in the abutment
A toothing is provided in the stored adjusting nut
if j is much more like a toothed belt that transmits the drive force to an identical spindle arrangement on the opposite side of the backrest.

According to the invention, the abutment is cup-shaped and the thrust pieces are positioned accordingly Pot wall convexly arched pressure surfaces against the inner wall of the pot.

The pressure pieces then have, according to the invention, on their convexly curved pressure surface on a guide stone entering a slot in the pot wall.

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BATH ORIGINAL

Disclosure Records

-Y- 12 131 March 5th , 1969

One can finally according to the invention between the hollow cheeks in the region of the lower hinge bolt a the erection movement of the backrest supporting _a spiral spring providing the one end engaging the hinge pin and at the other end on the backrest cheek.

As a result of the design according to the invention, the following advantages are essentially achieved: Without a parking brake, a mechanically inevitable, easily actuatable pivoting of the backrest is brought about. The gear used for this purpose for the adjusting nut consists in its simplest form of a bevel gear pair _3, it requires little installation space and, like the adjusting spindle, can also be attached in a protected manner within the side cheeks. Furthermore, an attack which is favorable for the adjustment and support forces is achieved by arranging the articulation point of the adjustment spindle on the side of the joint axis of the backrest facing the seat cushion. As a result, the adjusting spindle does not protrude laterally out of the plane of the backrest cheek even at the greatest adjustment angle of the backrest. This design creates the double-sided arrangement of one adjustable spindle

009817/0686
ν ; · ORIGINAL BATHROOM

Disclosure.sunto succumbed

- % - 12 131 March 5, 1969

enables and a coupling of the two adjustment. nuts facilitated by a toothed belt for the purpose of synchronism when adjusting. In addition, the cup-shaped design of the abutment for the purpose of axially supporting the adjusting nut is of particular advantage. On the whole, the entire structural design serves a practically advantageous shape of the backrest _{cheeks as a fitting unit; a compensating spiral spring which facilitates actuation can also be provided in this 3} in a favorable manner, particularly in the case of hollow cheeks. The entire adjustment mechanism is then housed in a closed housing ₃ formed by the hollow backrest cheeks, which simplifies the upholstery of the backrest and the seats.

In the drawing, the invention is shown in an exemplary embodiment , namely show:

Fig. 1 shows an embodiment of the seat in a side view with the backrest upright and, in comparison, dash-dotted lines with the position _{3 tilted back completely}

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Fig. 2 shows a longitudinal section of the side along line II- _{; i} JL of Fig. 3 and BAD on a larger scale

Disclosure Records

- I - 12 131 5 March 1969

Fig. 3 shows a cross section of this along line III-III of Fig. 2, showing both backrest cheeks assigned to a seat.

The backrest closes on the seat cushion 1 lying in the usual way on a seat pan or the like on, which is carried by the cheeks 3 and 4 extending to both of its long sides. These cheeks 3 and 4 are symmetrically designed and arranged parallel to one another. You are by means of a stop plate 5 on the The seat pan or the seat frame is fastened and mounted so as to be pivotable about the hinge axis 6.

The cheeks 3, 4 of the backrest are designed as hollow cheeks, They consist of two compression molded half parts 3 '} 3 "or 4', 4". The hollow of the hollow cheeks is dimensioned so that there is enough space between its walls for one extending in the longitudinal direction of the cheeks Spindle 7 is present. In the area of the lower end receiving the hinge axis 6, the cheek 3, 4 is bent, and forms a chamber 8 in which a spiral spring 9, which supports the raising movement of the backrest, is located,

009817/0686

BATH ORIGINAL;

Disclosure Records

--f -. 12 131 5 March 1969

which engages the hinge pin 6 at one end (see Fig. 2) and the other night on the one provided on the backrest cheek Support 10 supports.

The inclination of the backrest is adjusted by the above-mentioned spindle 7 , outside of the hinge axis 6, which engages the stationary bolt 11 seated on the plate 5. The adjusting spindle 7 passes through an abutment 12 which is fixedly arranged on the back glue cheek. The drive adjusting nut 13 is arranged in the latter. which are supported against the abutment 12.

The abutment 12 is cup-shaped ; the pressure pieces 14, 14 'are in this with the pot wall correspondingly convex' arched pressure surfaces 14 "against the inner surface of the pot wall.

Furthermore, the pressure pieces 14, 14 'have an arched surface Pressure surface l4 "one in a slot 16 of the pot wall

entering guide stone 15 or 15 ', so that a BAD ORIGtNAL 0 0 MMJ: 0 6 8 6

Disclosure Records

- I - 12 131 5 March 1969

Jamming of the pressure pieces cannot occur.

On the adjusting nut 13 a gear 17 is arranged, which can also be formed by attaching a toothing on the adjusting nut itself, over this gear 17 runs an endless toothed belt Iu ₃ which the rotation of the adjusting nut I3 on the same spindle arrangement on the opposite side of the The backrest or the other backrest cheek.

The abutments 12 arranged on both sides of the backrest are each closed with a blown cover ₃ which has an opening 23 for the toothed belt 18 to pass through. The belt 18 is, for example, if a concave backrest is desired, guided through one or more guide grommets in a corresponding manner.

A backrest cheek _3a which preferential ^ _e i _se ± _m vehicle is located on the outside, is equipped with an external Antriebsstellrad 19, on whose shaft a bevel ring gear 20 is seated.

009817/0686 ^ _{0 ommL}

Disclosure Records

- ■ $ .- '12 131 March 5th 19β9

The teeth of this ring gear 20 mesh with the teeth of a bevel gear 21 ″ ₃ which is provided on the adjusting nut 13.

You can now use this handwheel .19 to adjust the adjusting nut 13 and at the same time by conveying the flexible Toothed belt 13 set the adjusting nut 13 'of the opposite cheek 4 in rotation.

As a result of this rotation, the adjusting nut 13 moves on the. Adjustment spindle 7 according to the direction of rotation and der.Steigung j, for example, from the position of the backrest according to Fig. 1 into the dash-dotted inclination ₃ wherein the distance χ of the reference points a and b increases ₃ but decreases when the backrest is straightened up. Here "a" is the center axis of the stationary bolt and ^Jr b "is the center axis of the abutment 12. The pivoting of the backrest always takes place around the hinge pin 6 when the inclination is adjusted.

When you fold the backrest, the spring 9 is each cheek. 3> 4- _o eapann, because the free spring end of the bolt 6 held

Barulfeder is mityeriomiiien in front of ^ to ^ m ^ thej / ange 3,4 seated support.

the one at Wang 00 HoI // Ub ob

Disclosure Records

-M- 12 131 March 5, 1969

When the backrest is raised, this spring balances the weight through the stored spring force.

! ■ lan the spring can also be on or as an extension of the spindle 7 arrange. In this case, the bolt 6 can also be pulled out, so that the backrest, starting from the approximately vertical position around the fixed bolt 11 can be folded forward, which is the case with two-door motor vehicles is desirable.

BATH ORIGINAL
0 0 9 817/0686> ^

Claims (1)

Disclosure Records 12 131 -. -5. March 1969 Claims 1.) Seat, especially for motor vehicles, with a an articulated axis mounted in the seat frame carriage, the inclination of the backrest continuously adjustable, one in the direction of extension of the backrest adjusting spindle pointing outside the gel axis also acting on the seat frame within a, abutment penetrated by it which carries the adjusting nut supporting the backrest, characterized in that that the abutment (12) for the inside of the backrest v; the backrest (2) extending adjustment spindle (7) is arranged on the cheeks (3j * 0 and the Adjusting nut (13) supported in the abutment has a conical toothing (21) for engaging a bevel ring gear (20) on v / eist, the 'shaft of which is an actuating handwheel on the outside of the cheek (19) carries. ' -2.) Seat according to claim 1, characterized in that the spindle (7) on the side of the hinge axis (G) facing the seat cushion (1) between the as liohlv.-ungen - (5 ^! ₄ 3 ^{! T} or 4 ', H ") formed cheeks of the 009817/0 ^ 86. . «?. - '■ · ■ - · .- ■ "■.-.-; .... -. ¹ J. \ -,>;. BAD ORIGINAL Disclosure records - ie - 5. Resin 1969 Backrest (2) extends. 3.) Seat according to claim I _3, characterized in that a toothing (17) is provided on the circumferential surface of the adjusting nut (13) embedded between the pressure pieces (14, 14 ') in the abutment (12), on which a toothed belt (18) runs, which transmits the driving force to an identical spindle arrangement on the opposite side of the backrest (2). 4.) Seat according to claim 1, characterized in that the abutment (12) is cup-shaped and is the pressure pieces (14, 14 ') with according to the pot wall Place convexly curved pressure surfaces (14 ") against the inner wall of the pot. 5.) Seat according to claim 1 and 4, characterized in that that the pressure pieces (14, 14 ') are curved convexly Pressure surface (14 ") have a guide stone (15, 15 ') which enters a slot (16) in the pot wall. 009817/0 6 86 BATH ORIGINAL Succeeded in disclosure failure - * 3 - 12 131 March 5, 1969 β.) Seat according to claim 1 and 2, characterized ₅ in that between the hollow cheeks (3 '* 3' or 4'j4 ") in the region of the lower pivot pin (6), the erection movement of the backrest (2) supporting the coil spring (9 ) , which engages the hinge pin (6) at one end and the backrest warige at the other end. BAD ORIGINAL 009817/068 # ^ ^UKi Blank page