DE102008019773A1 - Seat i.e. rear seat bench, for vehicle i.e. motor vehicle, has mechanical energy storage that is attached to seat and is provided for effect of preloading of backrest part in direction from one use position to another use position - Google Patents

Abstract

The seat (1) has a backrest part (2) and a seat part (3), where the backrest part is positionably provided relative to the seat part. The backrest part is lockably provided relative to the seat part, in two use positions. A mechanical energy storage is attached to the seat and is provided for effect of preloading of the backrest part in a direction from one use position to another use position. A pure linear shift of the backrest part is provided between the use positions. A locking latch is biased in a direction of a locking position.

Description

The The invention relates to a vehicle seat for a motor vehicle, in particular a rear seat with a backrest part and with a seat part.

Vehicle seats, in particular rear seat benches, with a possibility to increase the cargo space are well known. For example, in the document DE 103 42 614 B4 discloses a vehicle seat with a loading position, in which it is possible to achieve only a moderate extension of the trunk in that the backrest is pushed in the direction of travel to its foremost position of use. Other examples of vehicle seat disclosing pamphlets are the writings DE 195 18 393 C2 . DE 196 17 727 C2 and DE 195 33 932 C2 ,

The known vehicle seats are, however, in terms of cargo space enlargement, during operation for setting a loading space enlargement and in terms of a simpler structure and lighter weight improvement.

task The present invention was therefore to provide a vehicle seat, in the case of simple structural means of the vehicle seat and especially at low weight of the vehicle seat a loading position the backrest (or a second use position of the Backrest) is ingestible such that a forward displacement the backrest or the backrest part in particular under Combination with a one-hand operation is provided.

The Task is solved by a vehicle seat for a motor vehicle, in particular rear seat, with a Backrest part and with a seat part, wherein the backrest part relative is provided positionable to the seat part, wherein the backrest part provided lockable in a first position of use relative to the seat part is and wherein the backrest part in a second position of use is provided lockable relative to the seat part, wherein further the Vehicle seat is associated with a mechanical energy storage and wherein the mechanical energy storage to effect a preload of the backrest part in the direction of the first use position the second use position is provided. By means of such Vehicle seat, it is according to the invention in a simple, stable, cost-effective and comparatively little space consuming Way possible that the backrest part of the vehicle seat of a first position of use in a second position of use is set, with the required effort according to the invention by the mechanical energy storage, in particular by means of a spring in the first position of use curious or more tense and in the second Useful position is relaxed or less tensioned, for Is made available.

According to the invention it is particularly preferred that a substantially pure linear displacement of the backrest part between the first use position and the second Use position is provided. This will be a simple and for a user intuitively operated or adjustable backrest realized the vehicle seat, which also to a comfort increase by maintaining the Lehnenneigung leads.

According to the invention it further preferred that the adjustment of the backrest part in the second use position relative to the adjustment of the backrest part in the first position of use of a shift of the backrest part in the direction of travel corresponds to a displacement distance. hereby it is advantageously possible according to the invention that the first use position of a more comfortable setting the backrest part of the vehicle seat for one on the vehicle seat seated (and as the main direction of vision (straight ahead) in the direction of travel looking) user represents and that the second use position a setting of the backrest part with limited comfort, especially reduced seat depth corresponds to the vehicle seat, However, although the second use position, for example smaller passengers, such as children, quite a sufficient amount Seating comfort or even one for this group of people (im Compared to the first use position) increased seating comfort can allow. The displacement distance according to the invention in preferably, in particular, a length of 20 to 200 Millimeters, preferably a length of 50 to 150 millimeters, particularly preferably a length of 80 to 120 millimeters, most preferably a length of 90 to 110 millimeters. As a result, it is according to the invention in particular Way advantageous possible to make a good compromise between a cargo space enlargement and a concomitant Seat depth reduction of the vehicle seat and the constructive and cost-increasing effort to realize this Adjustment to achieve. Also, the implementation this adjustment in an inventive Vehicle seat thereby easier for a user.

According to a preferred embodiment of the present invention, it is provided that the vehicle seat for realizing the displaceability and lockability of the backrest part has a fitting part with a first and in the direction relieving part fixed fitting element and a second fitting element, wherein the first fitting element and the second fitting element due to positive guidance means are provided substantially only to the displacement distance relative to each other movable. As a result of that the possible displacement of the backrest part is limited relative to the seat part in the direction of displacement substantially by the displacement distance, the design effort for the realization of the vehicle seat according to the invention can be kept relatively low. Furthermore, according to the invention, it is thus also advantageously possible that, for example, compared to a displacement possibility of the backrest part in the direction of travel by a significantly greater distance than, for example, 200 millimeters (approximately around the backrest part for maximizing the load compartment substantially completely in contact with a seat part folded forwards and upwards To bring a higher degree of security is achieved in that the mobility of the backrest part is limited to the relatively small area of the shift distance (for example, 100 millimeters), because about in an accident situation and in an unlocked state, the backrest part only a shorter Track is movable and thereby can absorb only a lower kinetic energy.

The inventive limitation of the shift range of the backrest part (on the displacement distance between the first use position and the second use position) can be according to a Still preferred embodiment of the invention thereby be realized that as a forced guidance means a backdrop and a movable in the scenery pin is provided, wherein the backdrop is preferably provided on the second fitting element and wherein the pin is preferably provided on the first fitting element is. This is a particularly reliable and also against a by a user faulty operation of the adjustment Secured execution of the vehicle seat according to the invention possible. Furthermore, by a backdrop and a movable therein pin or Bolt advantageously a particularly simple and robust Execution of the vehicle seat possible.

In a further preferred embodiment it is provided that the vehicle seat has a locking means, wherein means the locking means the locking of the backrest part both in the first position of use as well as in the second position of use is feasible. This can advantageously by means of the locking means, which may be formed in several parts and different for the different usage positions Locking elements may have a secure locking of the Lehnenteils be achieved.

According to one particularly preferred embodiment of the present invention Invention is the locking means also for bilateral action is provided on the vehicle seat and it is provided that by means of a transmission means, in particular a transmission rod, the locking means operable on both sides in the sense of unlocking is. This makes it advantageous according to the invention possible that a particularly high stability of the Vehicle seat and in particular the connection of the backrest part the seat part or the connection of the backrest part to the body of the vehicle is achieved by the locking or Locking the sliding backrest part provided on both sides is, however, such a two-sided locking or locking by only a single actuation movement or actuation can be canceled by a user, which leads to that the use of the adjustment in a special way comfortable can be designed.

According to one furthermore preferred embodiment it is provided in that the locking means has a locking pawl, wherein the locking pawl preferably a locking of the backrest part both in the first use position and in the second use position allows. This can be a very reliable implementation of the vehicle seat according to the invention with comparatively little effort can be realized by, for example the locking pawl has a first recess and a second recess having, wherein the movable in the gate pin or bolt at a setting of the backrest part in the first use position cooperates with the first recess of the locking pawl and wherein the movable in the backdrop pin or bolt at a Adjustment of the backrest part in the second use position with the second recess of the locking pawl cooperates.

In In a particularly preferred embodiment, the locking pawl biased in the direction of its locking position, so that in every possible operating situation a lock or Locking the backrest part against movement in Longitudinal direction, d. H. essentially parallel to the displacement path, is possible.

in the The following will become apparent with reference to the accompanying drawings an embodiment of the invention explained in more detail.

1 schematically shows a perspective view of a part of the structural elements of a vehicle seat according to the invention.

2 schematically shows a side view of a part of the vehicle seat according to the invention, wherein two different relative positions of the backrest part or the seat part are indicated to each other, which correspond to the first use position and the second use position.

3 and 4 show schematically in a side view and a perspective view of a part of the vehicle seat according to the invention in the first position of use.

5 and 6 show schematically in a side view and a perspective view of a part of the vehicle seat according to the invention in the second position of use.

In 1 schematically is a perspective view of a portion of the structural elements of a vehicle seat according to the invention 1 shown. The vehicle seat 1 has a backrest part 2 and a seat part 3 on. The backrest part 2 is used in the context of the present invention as a backrest 3 designated. Both the backrest part 2 as well as the seat part 3 are in 3 only indicated (indicated by schematically drawn respective padding parts). The vehicle seat according to the invention 1 is in particular formed as a rear seat or as a rear seat of a vehicle (not shown). In this case, such a rear seat or such a rear seat can be divided, in particular divided into two parts, provided and preferably asymmetrically divided (for example 60% to 40% or two thirds to one third). However, according to the invention it does not matter and the backrest or the backrest part 3 refers in the case of a split rear seat on only the backrest part 3 one of the two parts of the rear seat or on each backrest part 3 from both parts of the rear seat.

Essentially shows 1 a part of the structural parts of the seat part 3 and the backrest part 2 , In this case, the vehicle seat 1 a fitting (or structural part), which is a first fitting element 21 and a second fitting element 31 having. The first fitting element 21 is according to the invention at least in terms of a movement of the backrest part 2 in the vehicle longitudinal direction, ie usually formed in the direction of travel, backrest firmly. In the 1 to 3 and 5 is as a backrest fixed first fitting element 21 essentially only a fitting plate shown, which with the backrest part 2 connected in the longitudinal direction, but in a (preferred according to the present invention) pivotal realization of the backrest part in a pivoting of the backrest part does not complete this pivoting, but (with respect to a rotation of the backrest part 3 ) rotatably with the vehicle or the body (or with the seat part 2 ) connected is. The second fitting element 31 is (at least with respect to a movement of the backrest part 2 in the longitudinal direction or direction of travel) either seat part fixed provided or provided body-tight.

In 2 is a schematic side view of a part of the vehicle seat according to the invention 1 illustrated, wherein two different relative positions of the backrest part 2 or the seat part 3 are indicated to each other, which correspond to the first use position and the second use position and the order of a displacement distance 5 (along a direction of displacement 51 ) are shifted from each other (illustrated by the first fitting element 21 ). For this purpose, a linear guide device of the fitting elements 21 . 31 provided relative to each other, with the reference numerals 25 and 35 is designated, in particular in the form of a first linear guide rail 25 on the first fitting element 21 and a second linear guide rail 35 on the second fitting element 31 , In addition to the leadership of the fittings 21 . 31 relative to each other is also a movement limitation by means of a forced guiding means 40 intended. Such a forced guidance agent 40 is in the illustrated embodiment by means of a backdrop 41 and one in the scenery 41 movable pin 42 (or Bolzens 42 ) realized. However, in particular, other forced guidance means could alternatively be used 40 , In particular, those in the linear guide device 25 . 35 are integrated in the sense of end stops or the like, be realized according to the invention, which is not shown. For locking the first and second fitting element 21 . 31 (and thus the seat and backrest part 3 . 2 ) relative to each other in a first and a second (in 2 shown) use position, it is inventively provided in particular that the vehicle seat 1 having a locking means. The locking means is in the embodiment as a locking pawl 60 executed, which in 2 in one (the backrest part 2 opposite the seat part 3 ) locking position or position (with the reference numeral 61 referred to) and in one (the backrest part 2 opposite the seat part 3 ) unlocking position or position (with the reference numeral 62 indicated) is indicated. Especially in the de-entrant position 62 it can be seen that the locking pawl 60 by means of a first recess 60 ' and a second recess 60 '' is designed such that in the locking position or position 62 the locking latch 60 both the first use position of the backrest part 2 relative to the seat part 3 as well as the second use position of the backrest part 2 relative to the seat part 3 can be locked or locked. For unlocking the locking pawl 60 this is a Rotationsache or pivot axis in the exemplary embodiment 63 rotatable, so that by means of an actuating means 67 - About a drawstring or a Bowden cable - the unlocking can be effected. According to the invention it is provided in particular that the fitting part the fitting elements 21 . 31 on both sides of the backrest part 2 has (as in the perspective views according to the 1 . 4 and 6 visible) and correspond to the unlocking the, on both sides of the backrest part 2 existing lock stitching 60 by means of a transmission means 65 (especially good in 4 and 6 visible) is synchronized such that upon actuation of the actuating means 67 a two-sided release of the locking pawls 60 he follows. To reset the locking pawls 60 or the preload on their locking position 61 towards is a return mechanism in the embodiment 64 and a return spring 66 intended.

In the 3 and 4 is a schematic side view and in a perspective view of the position of the fitting elements 21 . 31 shown in the first position of use. In the 5 and 6 is a schematic side view and in a perspective view of the position of the fitting elements 21 . 31 shown in the second use position. Like reference numerals from previous figures again denote like components or parts of the vehicle seat 1 , It goes with the 3 to 6 in particular from the 3 and 5 , that a mechanical energy storage 4 - In particular a spring, such as a coil spring, but also a gas spring or the like energy storage - according to the invention provided to a preload of the first fitting element 21 opposite the second fitting element 31 (and thus the backrest part 2 opposite the seat part 3 ) in the direction from the first position of use to the second position of use (spring 4 is in the 3 and 4 ever tense or more tense than in the 5 and 6 ). As a result, by unlocking the locking pawl 60 in the case of a setting of the first use position, an automatic adjustment of the backrest part 2 effected at least in the direction of the second use position. If the stored energy of the energy storage 4 big enough - especially opposite on the shift distance 5 to be overcome resistors such as in particular Reibeinflüsse, the partial movement of the locking pawl 60 against the action of the locking spring 66 or a lifting of the backrest part 2 (in the event that the displacement distance 5 is provided for example in the direction of the second use position increasing) - it may also be provided according to the invention that, as a rule, solely by the action of the energy storage 4 an adjustment of the second use position is achieved and in this second use position, a lock by the locking pawl 60 (Especially due to the bias of the locking spring 66 in the direction of the locking position or position of the locking pawl 60 ) is achieved. A provision of the backrest part 2 in the first use position is then (ie after unlocking the locking pawl 60 ) For example, by pressing a user against the force of the energy storage 4 possible.

1

vehicle seat

2

back part

21

first fitting element

25

first Linear guide rail

3

seat part

31

second fitting element

35

second Linear guide rail

4

energy storage

40

Positive guide means

41

scenery

42

spigot

5

displacement distance

51

displacement direction

60

locking pawl

61

locking Position of the locking pawl

62

unlocking Position of the locking pawl

63

rotation thing or pivot axis of the locking pawl

64

Return mechanism

65

transmission means

66

Return spring

67

actuating means

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10342614 B4 [0002]
• - DE 19518393 C2 [0002]
• - DE 19617727 C2 [0002]
• DE 19533932 C2 [0002]

Claims (10)

Vehicle seat ( 1 ) for a motor vehicle, in particular rear seat, with a backrest part ( 2 ) and with a seat part ( 3 ), whereby the backrest part ( 2 ) relative to the seat part ( 3 ) is provided positionable, wherein the backrest part ( 2 ) in a first position of use relative to the seat part ( 3 ) is provided lockable and wherein the backrest part ( 2 ) in a second position of use relative to the seat part ( 3 ) is provided lockable, characterized in that the vehicle seat ( 1 ) a mechanical energy store ( 4 ), wherein the mechanical energy store ( 4 ) to cause a preloading of the backrest part ( 2 ) is provided in the direction from the first use position to the second use position. Vehicle seat ( 1 ) according to claim 1, characterized in that a substantially pure linear displacement of the backrest part ( 2 ) is provided between the first use position and the second use position. Vehicle seat ( 1 ) according to claim 1 or 2, characterized in that the adjustment of the backrest part ( 2 ) in the second position of use relative to the adjustment of the backrest part ( 2 ) in the first position of use of a shift of the backrest part ( 2 ) in the direction of travel by a displacement distance ( 5 ) corresponds. Vehicle seat ( 1 ) according to claim 3, characterized in that the displacement distance ( 5 ) has a length of 20 to 200 millimeters, preferably a length of 50 to 150 millimeters, more preferably a length of 80 to 120 millimeters, most preferably a length of 90 to 110 millimeters. Vehicle seat ( 1 ) according to one of the preceding claims, characterized in that the vehicle seat ( 1 ) for the realization of the displaceability and lockability of the backrest part ( 2 ) a fitting with a first and in the direction of displacement ( 51 ) restraint-resistant fitting element ( 21 ) and with a second fitting element ( 31 ), wherein the first fitting element ( 21 ) and the second fitting element ( 31 ) due to forced guidance means ( 40 ) essentially only about the displacement distance ( 5 ) are provided movable relative to each other. Vehicle seat ( 1 ) according to claim 5, characterized in that as forced guidance means ( 40 ) a backdrop ( 41 ) and one in the scenery ( 41 ) movable pin ( 42 ), the scenery ( 41 ) preferably on the second fitting element ( 31 ) is provided and wherein the pin ( 42 ) preferably at the first fitting element ( 21 ) is provided. Vehicle seat ( 1 ) according to one of the preceding claims, characterized in that the vehicle seat ( 1 ) has a locking means, wherein by means of the locking means, the locking of the backrest part ( 2 ) is feasible both in the first position of use and in the second position of use. Vehicle seat ( 1 ) according to claim 7, characterized in that the locking means for bilateral action on the vehicle seat ( 1 ) and that by means of a transmission means ( 65 ), in particular a Übertagungsstange, the locking means is actuated on both sides in the sense of unlocking. Vehicle seat ( 1 ) according to claim 7 or 8, characterized in that the locking means comprise a locking pawl ( 60 ), wherein the locking pawl ( 60 ) preferably a locking of the backrest part ( 2 ) is possible both in the first position of use and in the second position of use. Vehicle seat ( 1 ) according to claim 9, characterized in that the locking pawl ( 60 ) is biased in the direction of its locking position.