DE3218379A1 - Vehicle seat with a rail guide which can be adjusted and locked in the direction of travel - Google Patents

Abstract

The invention relates to a vehicle seat with a rail guide which can be adjusted and locked in the direction of travel, a trigger handle for the rail locking bolt and a shock absorber which is assigned to the rail guide and absorbs longitudinal impacts to the front and to the rear and can be switched on and off as desired in that the free passage of the shock absorber is obstructed by a locking bolt or released. Switching off occurs if excessively large horizontal impacts and deflections occur. The mechanisms for locking the rails and the switching on and off of the longitudinal shock absorber have previously been too costly, too complicated and too user-unfriendly. In accordance with the object upon which the invention is based, a remedy is provided for this in that the handle which serves to release the rail locking bolt and the switching handle for switching on and off the longitudinal shock absorber are combined to form a common actuation handle, and in that this handle is in a driving connection both with the rail bolt and the locking bolt which is assigned to the free passage for the shock absorber, the adjustment range of the common actuation handle extending over three defined switching positions, the 1st position of which being assigned to the rigid locking position of the rail guide when the free passage of the shock absorber is switched off, the 2nd position being assigned to the locking position when the free passage of the shock absorber is switched on and the 3rd position being assigned to the released lock of the rail guide. This results in a more simple arrangement and design of the rail lock and of the switching device for the longitudinal shock absorber, a reduced space for arranging these and a simplified synchronous controllability of these mechanisms.

Description

3 ^ 18379

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Vehicle seat ait adjustable in the direction of travel and lockable rail guide.

The invention relates to a vehicle seat in the direction of travel adjustable and lockable rail guide, a handle used to trigger the rail locking bolt and one of the rail guides associated, longitudinal shocks to the front and rear absorbing shock absorption, which by means of a switch handle either in and can be set inoperative by having a clearance within the locking mechanism corresponding to the compression range of the shock absorption Rail guide can be released or blocked by actuating a blocking bolt.

Such vehicle seats are already known, for example, from US Pat. No. 3,258,241. The one with the rail guide and its pull-out lock Combined longitudinal shock absorption catches the bumps in the road outgoing shocks and the resulting swings of the seat forwards and backwards in the direction of displacement of the rail guide away. If too large horizontal shocks and deflections occur, the longitudinal shock absorption can optionally be done with the help of the switch-off handle switching off This is not possible, e.g. with a seat slightly below according to US-PS 2,932,342), both for triggering the rail lock and a special handle is arranged for switching the longitudinal shock absorption on and off known seat constructions of this type are expensive and complicated and, moreover, insufficiently user-friendly. It also requires the previously known parallel arrangement and configuration the longitudinal shock absorption too great a cost of components and installation space. A more revealing, more functional suspension is also very much restricted as a result.

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The invention is based on the object in-so far with a To provide a remedy for the vehicle seat of the design defined at the beginning.

This object is according to the invention in terms of construction simplification and simplification of operation of switching the longitudinal shock absorption on and off achieved by the fact that the triggering of the Rail locking bar serving handle and the switching handle for switching the longitudinal shock absorption on and off to one common Actuating handle are combined, and that this both with the rail locking latch and with the shock absorber clearance assigned blocking bolt is in Mittiahmeverbindungen, with the adjustment range of the common operating handle extends over three defined switch positions, of which the position of the rigid locking position of the rail guide when switched off. Shock absorber clearance is assigned, the ^ position of the locking position the rail guide with activated shock absorber clearance and the "position of the triggered locking of the rail guide. This creates a vehicle seat of the type specified at the beginning with a longitudinal shock absorption that can be switched on and off both the locking of the extension of the rail guide and the switching on and off of the longitudinal shock absorption in a sensible way one-handed synchronization takes place from a single operating means. This facilitates the operation to a large extent as well as a much simpler structure of such a special seat due to the saving of components, of arrangement space and access space.

A particularly advantageous embodiment of the invention results in that the locking bar from the suspension of the longitudinal shock absorption is held in a neutral center position and off

ORIGINAL INSPECTED

one with the adjustable rail of the rail guide connected transversely and parallel displaceably connected slide, which in its length dimension the area of the clearance within an opening assigned to the locking bolt fills the rail and the likewise slide-shaped Schianenarretierriegel movable in a laterally U-shaped wraparound engages around, the slide being coupled to the rail locking bolt by a chain link having a clearance and frictionally with a curve of the common operating handle cooperates.

According to an advantageous further development, a Functionally favorable arrangement take place in that the locking bolt and the rail locking bar are mounted on a cantilever-like plate of the adjustable rail, with the transverse and parallel displacement of the locking bar with a pin cross-hatch itzver connection is provided whose rail-parallel slot course with the shock absorber clearance and their to the rails transverse slot course with the rigid and with the triggered one Rail locking is synchronized, and that the free movement of the chain link from one preferably by one Spring loaded pin-and-slot coupling with the locking bar consists.

A further simplification of the operation is made possible by the fact that the switching positions of the common actuation handle a detent lock can be set and / or can be seen from a scale.

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The invention is explained in more detail below with reference to an exemplary embodiment illustrated in the drawing. It demonstrate:

Fig. 1 is a perspective view of the invention Vehicle seat in a first functional position,

2 shows an enlarged section of the illustration

according to Fig.l in a second functional position,

3 shows the sectional representation of the seat: according to FIG. 2, but in a third Function position, and

4 shows the spring characteristic of a longitudinal shock absorber-spring arrangement arranged transversely to the direction of travel.

The vehicle seat has a seat cushion 1 which rests on a frame (not shown in more detail) which has a known per se a base plate B fixed rail guide S is connected. These can be arranged in pairs and each roughly congruent run with the seat fins or only be provided individually, in which case they are then centered in the lower seat area is located. The rail guide S is adjustable in the direction of travel in that a rail connected to the seat frame 2 is displaceable with respect to a rail 3 attached to the vehicle floor. The length extension of the rail 2 is by means of a Locking device lockable. This has a locking latch 4 which can be triggered for the longitudinal extension of the rail 2 and which the extendable rail 2 is arranged to be transversely displaceable. The locking bolt 4 engages through an opening 2a in the rail 2 and interacts with locking teeth 4a with a row of locking holes 3a located on the rail 3 fixed to the floor.

The locking bolt 4 is slidably mounted in a contoured cutout 5a of a locking bar 5, which is also displaceable transversely to the rail guide S, in such a way that it slidably encompasses the locking bar 4 with the contour of the cutout 5a laterally and at the back with a U-shaped wraparound. The two bolts 4 and 5 supported against one another by a chain link 6 via a pin-slot clearance 7, 8 slide on a plate 2b connected to the displaceable rail 2 in the manner of a cantilever. This forms a connecting web between the rails 2, 2 when the rail guide, as illustrated, is arranged in pairs. The blocking bolt 5, which in this way guides the locking bolt 4 in itself and is ^{positively supported by shock absorber springs 10, 10 against abutments 2b 1} , 2b 'of the rail 2 in the illustrated neutral center position, is in turn supported by means of a cross-headed pin guide 12, 5b, 5c out on the board 2b secured. Of this cross-slotted pin guide, the slotted guide 5b running transversely to the rail guide S enables a corresponding cross-rail and the slotted guide 5c, which is parallel to the rail guide S, enables the blocking bolt 5 to move parallel to the rails with respect to the board 2b and with respect to the shock absorber clearance F the intended window-like opening 2a in the rail 2.

The springs 10, 10 are parts of the longitudinal shock absorption within the area occupied by the clearance F and can be guided on rods 11, 11 which are mounted in wide bores in the abutments 2b, 2b ¹ and 2d, 2d with sufficient pivoting and displacement play. With such an arrangement and support of the shock absorber springs 10,10, the alignment of the abutments can preferably be made so that this spring support at the same time seeks to hold the slide arrangement 4 and 5 in the central position shown in FIG

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Slide arrangement on both sides of this middle position, that is, in the displacement direction of the slide arrangement 4, 5 transversely to the slide guide S back and forth as a thrust spring drive works according to the well-known toggle switch oscillation principle. The way, arrangement and support of the shock absorber spring can of course also be in in another suitable form.

Such a different, also particularly advantageous variant of the longitudinal shock absorption would be given, for example, in that instead of several shock absorber springs aligned parallel to the rail guide S, a single shock absorber spring is arranged, which runs transversely to the rail guide S and consists of a transverse spring 10 '. This can be a flat _T- round, hollow or polygonal spring bar, a parabola or trapezoidal spring, have a single or packet formation and have a predetermined, suitable identifier (FIG. 4). The transverse spring 10 'can be coupled to the locking bolt 5 so that it can oscillate and move transversely, for example by engaging its free end or its two free ends in a yoke, a fork or a groove 40 on the locking bolt 4 or locking bolt 5. The transverse spring 10 ′ holds the blocking bolt 5 or the blocking bolt 5, 5 in a neutral central position above or below the board 2b, for example by means of a yoke 11. When the transverse spring 10 'is attached below the plate 2b, the fork or N ¹ Ut 40 of the bolt 4 or 5 engages through an opening in the plate 2b that does not impede its displacement. As a result, the unit 2b and the rail 2 connected to it can swing forwards and backwards from this central position in relation to the blocking bolt 5 and thus in relation to the rail coupled via the locked locking bolt 4 in the position shown in FIG act on the seat. As the Fedei characteristic curve according to Figure 4 shows ", can be with an arrangement a

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the transverse spring 10 'absorbing the longitudinal shock absorption has the identifier to a large extent freely tailored to the given conditions. The transverse spring 10 'enables a spring action beyond their entire length Lund can be strung together in stages Have an identifier, for example, in that it starts rising gently to the value 1, then becomes a little steeper again to the value 2 and then in a third step it runs even steeper to the value 3. This possibility can also be done by means of a simple A spring bar 10 'can be achieved by this on the board 2b attached fixed stops 20,20 assigned, which in their arrangement and their distances from each other exactly on the the aforementioned gradation are matched. The stops 20, 20, like the transverse spring 10 'in the exemplary embodiment, are below the plate 2b attached and are opposite each other in pairs. In addition to this liberal design option for the shock absorber element The special transverse arrangement of one or, if necessary, several transverse springs 10 'also enables a part and space saving Design of the mechanisms described above and, in connection therewith, a seat that can be built very low Holding forks or grooves 40, 40 can be pivotable, see above that this when swinging the transverse spring 10 'their bending curvature Can follow adjusted at the correct angle.

Regardless of the choice of a longitudinal shock absorption parallel or transverse to the rail guide S, the oscillating range of the springs 10, 10 or 10 'is adapted to the clearance F in such a way that the adjustable rail 2 when the locking bolt 4 is locked in the rail 3 fixed to the frame can swing against the spring force on both sides of the locking bolt 4 until it finds a stop ^{with the ends 2a 1} , 2a ^{1 of its opening 2a on both sides of the locking bolt 4.}

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The shift running transversely to the rail guide S das Blocking bar 5 within the slot guide 12, 5b can of one on the board 2b rotatably or displaceably arranged curve, for example in the form of a cam or a disk curve 15, which are thus directly or indirectly, for example provided with a handle 15a, the common operating handle for both the rail lock 3a, 4 as well as for switching the blocking device 2-i on and off, 5c, 5,5b, 12, F forms the longitudinal shock absorption. The curve 15, in their place also another suitable, non-form-fitting Tap connection to Blockierriegsl 5 can occur, controls the- ' sen and the locking strap 4 connected to it, preferably in a force-locking tap. The frictional connection can for example proceed from at least one spring 16 which keeps the locking bar 5 pressed against the curve 15 in constant contact. As a result, the oscillating mobility of the blocking bolt 5 parallel to the rails with respect to the plate 2b is independent of the cross-rail movement Movability of these parts guaranteed. In their swinging movement parallel to the rails, the latches 4 and 5 are especially when the longitudinal shock absorption is switched on according to FIG. stabilized at the same time by the springs 10,10. To a corresponding stabilized rail-parallel oscillation course of the latch 4 and 5 with respect to the plate 2b, which oscillates in the event of longitudinal joints, it is also possible, for example, to interpose a slide 19 (Fig. 3) between the curve 15 and the blocking gear 5 contribute.

With the mechanism described above, the rails 2, 3 are locked and this lock is triggered and switched on and elimination of the shock absorption absorbing the longitudinal shocks by means of the common actuating handle 15 or 15a in the way of a movement precondition

QRIGiNAL JNSPECTED

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gears sensibly coordinated synchronization within the adjustment or Movement range of this handle in continuous double functions possible.

This synchronization from an operating handle is illustrated by the illustrated, preferably by means of suitable Latching means 16 defined three continuous functional positions 1, 11 and III marked. Of these functional positions, which in addition to the step locking 160 also through a scale 17 can be optically defined is the position I (Fig.l) of the rigid locking of the rail 2 on the Rail 3 assigned when longitudinal damping is switched off. The locking bolt 4 is in engagement in the row of locking holes by the curve 15, by the locking bolt 5 and the spring 9 3a held, while the locking bar 5 fills the opening 2a and is thereby fixed in this.

The following functional position II (Fig.2) is the flexible locking of the rail guide S assigned with switched on longitudinal shock absorption. This position is achieved by pivoting the operating handle 15a reaches the scale mark II. In doing so, the under force moves to the sloping one Curve 15 abutting locking bar 5 from the rail guide S until the slot 5o of the cross-slot guide in Coincidence comes with their pin 12. The locking bar 4 remains here due to the pin-slot clearance 7.8 in Chain link 6 in its locking position. Longitudinal impacts now emanating from uneven road surfaces are caused by the springs 10, 10 or from the spring 10 'via the slot guide 5c, 12 opposing vibrating parts 4,2a and 2b, 5 absorbed.

The further functional position III is through the third switching step the operating handle 15a can be reached on the corresponding scale mark III. Accompanied by a twist of the next

3218373

falling curve 15 moves the blocking bolt 5 in its guide 5b, 12 even further away from the rail guide S and takes the locking bar 4 with the chain link 6 until the latter rait its locking teeth Aa out of engagement with the Latching hole row 3a of the rail 3 fixed to the frame comes. While doing so, the longitudinal damping is also ineffective is, the rail 2 can now move in the rail 3 and thus adjust the seat in the direction of travel.

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Claims (4)

.ι / IUJ / Claims Vehicle seat with an adjustable in the direction of travel and lockable rail guide, a handle used to trigger the rail locking bolt and one of the Rail guide assigned, longitudinal joints to the front and rear absorbing shock absorption, which by means of a switch handle can optionally be set in and out of effect by a corresponding to the corapression range of the shock absorption Free movement within the locking mechanism of the rail guide can be released or blocked by actuating a blocking bolt is characterized in that the handle used to release the rail locking bolt 6 (4) and the switching handle for switching the longitudinal joint on and off attenuation combined into a single operating handle (15a) are, and that these are assigned both to the rail locking bolt (4 ·) and to the shock absorber clearance (F) The blocking bolt (5) is in driving connection, the adjustment range of the common actuating handle extending over three defined switching positions (I, II and Uli extends, of which the L position (I) of the rigid locking position of the rail guide (S) when the shock cup is switched off he clearance (F) is assigned to the 2nd position (II) of the Locking position of the rail guide with activated shock absorber clearance and the 3rd position (III) of the triggered lock the rail guide. ORIGINAL INSPECTED 2. Vehicle seat according to claim 1, characterized in that that the blocking bolt of the suspension (10,10; 10 ') of the longitudinal shock absorption in a neutral central position is held and from one with the adjustable rail (2) of the rail guide (S) can be moved transversely and in parallel connected slide (5), which in its length dimension the area of the clearance (F) within one of the locking bolt (4) associated opening (2a) in the rail (2) and the likewise slide-shaped Rail locking bolt (4) engages in a laterally U-shaped wraparound so that it can move, the The slide (5) is coupled to the rail locking bolt (4) by a chain link (6) having a clearance (8) is and cooperates positively with a curve (15) of the common actuating handle (15a). 3. Vehicle seat according to claim 2, characterized in that that the locking bolt (5) and the rail locking bolt (4) on a cantilever-like plate (2b) the adjustable rail (2) are mounted, with a pin and cross-slot connection for the transverse and parallel displacement of the locking bar (5b, 5c, 12) is provided whose rail-parallel slot course (5c) with the shock absorber clearance (F) and their slit course (5b) running transversely to the rails (2,3) with the rigid one and the triggered one Rail lock (Fig. 1) is synchronized, and that the free movement of the chain link (6) from a preferably by a spring (9) loaded pin-slot coupling (7, 8) with the locking bolt (5). 4. Vehicle seat according to claim 1, characterized in that that the switch positions (I, II, III) of the like in s am en actuation s-handle (1.5a) by a snap lock (160) can be fixed and / or can be seen from a scale (17).