DE10034008B4 - Device for adjusting and locking a longitudinally displaceable seat - Google Patents

Abstract

The invention relates to a device for adjusting and locking a longitudinally displaceable seat, in particular for motor vehicles and caravans, with guide rails (10) which can be fastened to the vehicle and which each have a running surface (26), which is arranged essentially parallel to the displacement plane, for rollers ( 24). It is provided that two guide rails (10) consisting of hollow profiles are arranged parallel and at a distance from one another, on which a housing, which is connected to the seat, can be moved and locked. A front lever (18) is rotatably mounted on a first slider (14) and a rear lever (20) is rotatably mounted on a second slider (16). Both levers (18, 20) are pivotally connected to one another at one end by a bolt (22). At the other end of the levers (18, 20) rollers (24) are attached. Both levers (18, 20) are each connected to at least one clamping leg (28) which can be connected to the hollow profile in a non-positive manner. A locking unit (32) is connected to the seat, via which a form-fitting connection with the guide rail (10) can be established.

Description

The invention relates to a device for adjusting and locking a longitudinally displaceable seat, in particular for motor vehicles and caravans, with the features mentioned in the preamble of claim 1.

It is known to adjust vehicle seats by means of rotatable rollers associated with these in the longitudinal direction and to lock by suitable components in the desired position.

In the DE-PS 36 42 441 C1 a roller guide for a vehicle seat is described, which consists of a C-shaped seat rail, within which a roller is movably arranged. Axially parallel to the first roller, a rotatable auxiliary roller is provided to compensate for the dimensional tolerances of the seat rail.

Another guide for adjustable vehicle seats is from the DE-OS 195 19 153 A1 known. It is provided that the guide rail has at least two guide portions, which are separated by a central web. The DE-PS 196 48 170 C1 includes a guide device for motor vehicle seats, wherein the running rail has an upper and a lower raceway. By means of an elastic ring, which is arranged on the roller, a rattle-free running of the rollers within the C-shaped track is to be achieved.

The EP 0 765 776 A2 provides a roller guide for a longitudinally adjustable seat, which is designed so that it is smooth and resistant to contamination and a stable and secure side guidance is given. The roller guide has two partial contact surfaces, wherein a groove-like depression in the guide rail is arranged in the region between the partial contact surfaces. In addition to the slide roller, a pinch roller is provided, both made of plastic.

From the DE 196 17 935 A1 In addition, a vehicle seat with a floor rail mounting is known, which makes it possible to change the number and / or the seat assembly by moving the seats on the floor rails in a passenger compartment. By a combination shift of the seats on the rails with tolerances can be carried out smoothly and dirt insensitive.

An apparatus for temporarily connecting a movable vehicle seat to a support rail is also known from DE 299 02 465 U1 known. The retaining rail consists of a hollow profile, wherein two levers of a vehicle seat-side displacement mechanism are connected via a respective clamping leg fixed to the support rail. The clamping legs are movable within the hollow profile of the retaining rail and can be frictionally connected thereto, wherein in addition a locking unit is connected to the vehicle seat, via which an additional positive connection with one of the retaining rails can be produced.

All these solutions are intended to ensure the necessary for a required displacement of the seat movement play and on the other hand compensate for manufacturing tolerances of the guide rails. The manufacturing tolerances of the rails in motor vehicles lead to rattling noises, which are partially remedied according to the prior art in that elastically deformable rollers or the like are interposed between the rails, which undergo material compression when the seat is loaded and the profile rails are relieved when the seat is relieved press its upper abutment position. In these known solutions, however, after a long period of operation due to material abrasion, material indentations and material fatigue, rattling noises frequently occur again. In addition, the known elastic means for preventing the rattling noise do not contribute to increasing the escape safety of the sliding seat guide in accidents. Outbreak safety is of particular importance when seat belts are not anchored to the vehicle frame but directly to the vehicle seat.

From the US 5,348,261 a roller guide is known which comprises a guide rail formed from a hollow profile with a running surface for two arranged at a distance on a seat frame slide rollers and in each case a pressure element for the slide rollers. The pressure element is slidably disposed on the inside of the upper surface opposite the tread surface and the slide roller is acted upon by means of a support arm in the direction of the tread. In this roller guide, accumulating dust and dirt remain stuck to the tread and affect up to block the seat adjustment their ease.

All mentioned roller guides thus do not solve the problem of ensuring a permanent smooth shift and secure in any load case fixation of the seat of a motor vehicle. They are also expensive in the assembly and disassembly of the seat.

The invention is therefore an object of the invention to provide a means for adjusting and locking a longitudinally displaceable seat of the type mentioned, the secure fixation with a smooth adjustment ensures the seat while allowing easy assembly and disassembly of the seat.

This object is achieved by a device for adjusting and locking a longitudinally displaceable seat with the features mentioned in the claim 1. The device comprises guide rails which can be fastened to the vehicle floor and each have a running surface arranged substantially parallel to the displacement plane, wherein two guide rails consisting of hollow profiles are arranged parallel and at a distance from each other, on which a housing, which is in communication with the seat, is movable and lockable, wherein the housing encloses a first slider and a second slider, both of which are arranged one behind the other in the longitudinal direction of the guide rails, and on the first slider, a front lever and the second slider, a rear lever is rotatably mounted and both levers on their one end pivotally connected to each other by a bolt and at its other end in each case rotatable rollers are mounted, which are movable on the running surface of the guide rail. It is envisaged that both levers are each firmly connected to at least one clamping leg, which is located below the roller and within the hollow profile movable and frictionally connectable with this and that a locking unit is connected to the seat, via a positive connection with a the guide rails can be produced, wherein the locking unit and the levers are coupled together such that upon actuation of the locking unit simultaneously the non-positive connection of the at least one clamping leg of the lever and the positive connection of the locking unit are affected.

As a result, a smooth adjustment and secure fixation of the seat is achieved and created the possibility of easy assembly and disassembly of the seat. A slight displaceability of the seat is realized by means of the rollers. Rattling noises are avoided by the jamming of the seat with the guide rails. Breakage of the seat is prevented in any case by the jamming of the seat with the guide rail, coupled with the positive connection of the seat with the guide rail on the locking unit, as well as the support by the slider.

Further preferred embodiments of the invention will become apparent from the remaining, mentioned in the dependent claims characteristics.

The invention will be explained in more detail in embodiments with reference to the accompanying drawings. Show it:

1 a schematic representation of the device according to the invention in front view;

2 a schematic representation of the device according to the invention in side view and

3 a perspective view of a guide rail.

In the 1 the device according to the invention is shown with its essential components in one embodiment. The guide rail 10 consists of a hollow profile with a substantially box-shaped cross-section, which is connected with its lower surface with a vehicle floor, not shown, non-positively by screwing. The upper surface of the hollow profile forms a tread 26 the guide rail 10 , In this area is the hollow profile with a continuous guide slot 12 Mistake. Above the guide rail 10 is a housing (not shown) relative to the guide rail 10 slidably disposed in the longitudinal direction. The housing is firmly connected to a seat, not shown. The housing encloses a first slider 14 and a second slider 16 both in the longitudinal direction of the guide rail 10 arranged one behind the other. Both gliders 14 . 16 are inside the guide rail 10 displaceable in the longitudinal direction. At the first glider 14 is a front lever 18 and on the second slider 16 a rear lever 20 each rotatably mounted. Both levers 18 . 20 are at their end by a bolt 22 pivotable with each other and with an operating lever 44 connected. At the other end the lever 18 . 20 are rollers 24 attached to the tread 26 the guide rail 10 move. The levers 18 . 20 each have at least one clamping leg 28 on, below the caster 24 is located and is movable within the hollow profile. About the clamping leg 28 is a non-positive connection with the guide rail 10 produced. About a locking unit 32 is also a positive connection of the seat with the guide rail 10 produced.

For the adjustment of the seat in the longitudinal direction, the locking of the seat by the vehicle occupant is first to be solved. This happens because the operating lever 44 is moved in the vertical direction upwards. In a preferred embodiment of the invention is doing at the same time the locking unit 32 brought into the unlocked position. When moving the operating lever 44 The front lever leads upwards 18 a pivoting movement about a front pivot axis 34 and the rear lever 20 a pivoting movement about a rear pivot axis 36 out. The pivoting movements are completed when the other end of both levers 18 . 20 arranged rollers 24 Contact with the tread 26 the guide rail 10 to have. The seat can then be moved forwards or backwards in the longitudinal direction. The seat is supported on the rollers 24 starting to roll on the tread when adjusting the position of the seat 26 the guide rail 10 To run. in the desired position, the operating lever 44 moved down by the vehicle occupant. The front lever 18 and the rear lever 20 doing a contrary to unlocking pivotal movement. The pivoting movement is terminated when the housing, not shown, on the tread 26 the guide rail 10 is supported. The rollers 24 lift during the pivoting movement of the two levers 18 . 20 from the tread 26 the guide rail 10 from. About each on the front lever 18 and rear lever 20 arranged clamping legs 28 the clamping of the levers takes place 18 . 20 and thus the seat on the guide rail 10 ,

With the clamping of the lever 18 . 20 on the guide rail 10 At the same time advantageously extends the locking of the seat in a predetermined position. It is characterized by the force of a spring element 38 at least one locking bolt 42 in a recess 40 the guide rail 10 moves and thus a positive connection between the seat attached to the locking unit 32 and the guide rail 10 produced.

The locking unit, in 1 and 2 illustrated, in a preferred embodiment of the invention comprises at least one locking bolt 42 which is in a corresponding recess 40 the guide rail 10 is arranged einbringbar. As a result, a locking or unlocking of the displaceably arranged vehicle components is made possible in a simple manner. In particular, if the at least one locking bolt 42 against the force of a spring element 38 can be moved from its locking in its unlocked position, in a simple manner, an automatic locking by moving the vehicle components along the guide rail 10 respectively. The actuation of the locking unit 32 can with the joint operation of the front lever 18 and rear lever 20 be coupled. The actuation of the locking unit 32 can also be done separately.

The 3 shows a guide rail 10 with at its upper surface, which is the tread 26 forms, arranged recesses 30 , Through these in the front area of the guide rail 10 located recesses 30 can the seat with its in the guide rail 10 movable components are inserted from above and / or removed. In this way, a simple assembly and disassembly of the seat are possible.

In a further preferred embodiment of the invention according to 2 is provided at the lower edge of the first slider 14 and second slider 18 in each case at least one elastic plastic part 46 is attached. The plastic parts 46 serve to support the inside of the guide rails 10 movable vehicle components transverse to their direction of displacement. By the arrangement of the plastic parts 46 on the one hand ensures a slight displaceability of the seat and on the other hand ensures a backlash-free support transverse to the direction of displacement of the seat.

LIST OF REFERENCE NUMBERS

10

guide rail

12

guide slot

14

first glider

16

second glider

18

front lever

20

rear lever

22

bolt

24

caster

26

tread

28

clamping leg

30

recess

32

locking unit

34

front pivot axis

36

rear pivot axis

38

spring element

40

recess

42

locking bolt

44

actuating lever

46

Plastic part

Claims (6)

Device for adjusting and locking a longitudinally displaceable seat for vehicles, in particular for motor vehicles and caravans, with guide rails which can be fastened to the vehicle floor (US Pat. 10 ), each one arranged substantially parallel to the displacement plane tread ( 26 ) for casters ( 24 ), wherein two hollow profiles consisting of guide rails ( 10 ) are arranged parallel and at a distance from each other, on which a housing, which is in communication with the seat, is movable and lockable, wherein the housing a first slider ( 14 ) and a second slider ( 16 ), both in the longitudinal direction of the guide rails ( 10 ) are arranged one behind the other, and on the first slider ( 14 ) a front lever ( 18 ) and on the second slider ( 16 ) a rear lever ( 20 ) is rotatably mounted and both levers ( 18 . 20 ) at its one end by a bolt ( 22 ) pivotally connected to each other and at the other end of each rollers ( 24 ) are rotatably mounted on the tread ( 26 ) of the guide rail ( 10 ) are movable, characterized in that both levers ( 18 . 20 ) each with at least one clamping leg ( 28 ), which are located below the roller ( 24 ) and within the hollow profile movable and can be frictionally connected with this and that a locking unit ( 32 ) is connected to the seat via which a positive connection ( 38 . 40 . 42 ) with one of the guide rails ( 10 ) can be produced, wherein the locking unit ( 32 ) and the levers ( 18 . 20 ) are coupled together in such a way that upon actuation of the locking unit ( 32 ) at the same time the non-positive connection of the at least one clamping leg ( 28 ) the lever ( 18 . 20 ) and the positive connection of the locking unit ( 32 ) to be influenced. Device according to claim 1, characterized in that the guide rail ( 10 ) is formed from a hollow profile with a substantially box-shaped cross section, wherein the upper surface of the tread ( 26 ) for the rollers ( 24 ) forms and the hollow profile in this area in its longitudinal direction a continuous guide slot ( 12 ) having. Device according to claim 1, characterized in that the locking unit ( 32 ) at least one under the force of a spring element ( 38 ) standing locking bolt ( 42 ), which in a corresponding recess ( 40 ) of the guide rail ( 10 ) is arranged einbringbar. Device according to claims 1 and 3, characterized in that the actuation of the locking unit ( 32 ) separately from the joint operation of the front lever ( 18 ) and rear lever ( 20 ) is feasible. Device according to claims 1 and 2, characterized in that the tread ( 26 ) of the guide rail ( 10 ) with at least two recesses ( 30 ), through which the first slider ( 14 ) and the second slider ( 16 ) with the respective front lever ( 18 ) and rear lever ( 20 ) in the guide slot ( 12 ) can be introduced. Device according to claim 1 or 5, characterized in that in each case at the lower edge of the first slider ( 14 ) and second slider ( 16 ) at least one elastic plastic part ( 46 ) is arranged on an inner wall of the hollow profile, the guide rail ( 10 ) is supported.

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