Baby Car Seats and Stroller Devices

Abstract

To propose a baby carriage seat or a baby carriage device (including a baby carriage seat and a baby carriage chassis), in which easy operation including high flexibility and variability is ensured in order to enable a compact storage position.SOLUTION: Provided is a baby carriage seat 11 including a seating surface 19 and a backrest 16. The backrest includes a distal portion 17 and a proximal portion 18 that can rotate with respect to the distal portion. The backrest is to be attached on a baby carriage chassis 10 that can be folded to a backrest storage position from a developed backrest use position.SELECTED DRAWING: Figure 1a

Description

[Technical field]

[0001] The present invention relates to a stroller seat and a stroller apparatus. [Background technology]

[0002] Foldable stroller chassis are known from the prior art, for example from EP 2 957 479 A2. Furthermore, for example, removable foldable stroller seats are known from EP 2 895 376 B1. Such solutions allow the stroller (or parts thereof) to be displaced into a compact storage position, where it can for example be stored or transported. However, the solutions proposed in this prior art are generally perceived as relatively complex to operate and still relatively inflexible. Summary of the Invention

[0003] The object of the invention is to propose a stroller seat or stroller arrangement (comprising a stroller seat and a stroller chassis) which ensures simple operation with a high degree of flexibility and versatility in order to allow a compact storage position, in particular which should allow one-handed operation and / or handling requiring only one operation.

[0004] In order to solve the above problem, a baby car seat having the features of claim 1 is proposed.

[0005] In particular, the object of the present invention is solved by a stroller seat for mounting on a stroller chassis, comprising a seat and a backrest, said backrest having a distal part and a proximal part which is rotatable (pivotable) relative to the distal part (about a first axis) such that said backrest is foldable from an unfolded backrest use position to a folded backrest storage position.

[0006] The central idea of ​​the invention is to propose a foldable backrest. In particular, folding means that the angle between the proximal and distal parts is (significantly) reduced, for example by at least 50% or at least 90% (for example from 180° to less than 10°). The use position of the backrest is characterized in that in this position of the backrest a child can be accommodated in the stroller seat so that the stroller seat can be used. In particular, the storage position of the backrest is characterized in that in this position of the backrest no more child can be accommodated in the stroller seat. This is thus a position in which the stroller seat can be effectively used for storage and / or transport. Preferably, the stroller seat can be removably attached on the stroller chassis. In a preferred embodiment, the stroller seat can remain on the stroller chassis even when the backrest is folded (i.e. the stroller seat can at least be in contact with the stroller chassis, in particular the stroller seat can be at least partially attached to the stroller chassis).

[0007] The proximal portion is the portion of the backrest that is closer to the seat surface (in the use position) or the area that accommodates the child's lower back, while the distal portion is further away from the seat surface and is configured to support the child's upper back or shoulders (or head).

[0008] The proximal part is preferably rotatable (about a second axis offset from and in particular parallel to the first axis) relative to the seat surface of the stroller seat so that the stroller seat can be moved from an upright proximal use position to a flat proximal storage position. In this embodiment, the backrest is divided into (at least) two parts, the distal part of the backrest is rotatably connected to the proximal part of the backrest about the first axis. The proximal part of the backrest is rotatably connected to the seat surface about a second axis (at least substantially parallel to the first axis). This second axis is closer to the seat surface than the first axis.

[0009] It is also possible to adjust the inclination of the backrest at will, for example by rotating the proximal part relative to the seat, in order to improve the sitting comfort of the child. It is in principle conceivable that a child can also be accommodated in the proximal storage position (if at least it is possible for the backrest to be in the backrest use position). However, it is preferred that a child cannot be accommodated in the flattened proximal storage position (for example because this proximal storage position only presupposes that the backrest is in the backrest storage position). Various mechanisms for flattening the stroller seat can also be provided, if necessary, in order, on the one hand, to improve the comfort of the child (i.e. to displace the stroller seat into the lying position) and, on the other hand, to adjust the storage position of the flattened stroller seat (with the backrest also in the backrest storage position). Essentially, the terms backrest use position and backrest storage position refer to the relative position of the proximal and distal parts of the backrest relative to each other, whereas the terms proximal use position and proximal storage position refer to the relative position of the proximal part of the backrest relative to the seat surface of the stroller seat, so that a backrest in the proximal storage position is not excluded from being in the backrest storage position (but this is preferably the case).

[0010] Preferably, the length of the distal part is at least 0.5 times, more preferably at least 0.8 times, the length of the proximal part. Furthermore, the length of the distal part may be at most 1.5 times, preferably at most 1.2 times, the length of the proximal part. In particular, the distal and proximal parts of the backrest may be (approximately) the same length. Overall, a compact storage position of the backrest can be set in this way.

[0011] The angle between the proximal and distal parts of the backrest is (unless otherwise specified) the smaller angle between two mathematically possible angles between the proximal and distal parts. For example, if the distal part (with a fixed proximal part) pivots backwards (away from the surface on which the child rests), the angle between the distal and proximal positions can essentially be described as either 270° or 90°. According to the above definition, this should be an angle of 90° unless otherwise specified. In the case of giving specific angles, angle α should be the angle between the distal and proximal parts, angle β should be the angle between the proximal part and the seat surface, and angle γ should be the angle between the distal part and the seat surface or between their imaginary extensions. The angles β and γ are in particular the angles between the sides of the surface on which the child rests in the use position of the seat, unless otherwise specified.

[0012] Preferably, the proximal and distal portions of the backrest in the in-use position subtend an angle of at least 170°, preferably (at least approximately) 180°.

[0013] The proximal and distal portions may form an angle of less than 20°, preferably less than 8°, and more preferably (at least approximately) adjacent to one another in the back storage position.

[0014] The proximal portion and the seat surface may include an angle (optionally variably adjustable) of 90° to 180° in the proximal use position.

[0015] The proximal portion and the seat surface may, in the stroller storage position, subtend an angle of greater than 150°, preferably greater than 170°, more preferably (at least approximately) 180°, or may subtend an angle of less than 20°, preferably less than 8°, or more preferably be at least approximately adjacent to one another.

[0016] In one embodiment, the baby car seat may be configured such that the rotation of the distal part relative to the proximal part for folding down the back occurs before and / or during and / or after the rotation of the proximal part relative to the seat surface for flattening the baby car seat. In particular, the compact position of the baby car seat can be easily achieved if the two rotations are performed at least partially simultaneously.

[0017] In one embodiment, in order to fold the backrest into the use position, on the one hand the distal part can be rotated forwards relative to the proximal part and, on the other hand, the distal part can be rotated backwards or downwards relative to the proximal part. By (relative) forward rotation is meant in particular the approximation of the respective surfaces of the parts relevant for accommodating a child (in the use position). The forward rotation allows folding in a simple manner.

[0018] In the backrest use position and / or in the backrest storage position the proximal part and the distal part can be locked together. Alternatively or additionally, in the proximal part use position and / or in the proximal part storage position the proximal part and the seat can be locked together.

[0019] In a preferred embodiment, the locking of the proximal part relative to the seating surface can be achieved and / or released by rotating (possibly exclusively) the distal part relative to the proximal part. Alternatively or additionally, the locking of the proximal part relative to the distal part can be achieved (adjusted) and / or released by a manual operating device, which can further simplify the operation.

[0020] The above mentioned object is further solved by a stroller arrangement comprising a stroller chassis and a stroller seat of the above mentioned type. The stroller seat is preferably removably attached or attachable (to the stroller chassis) and / or rotatable (at least substantially) about a vertical axis relative to the stroller chassis (10). The stroller chassis is preferably (also) foldable.

[0021] The displacement of the backrest into the backrest storage position and / or the displacement of the proximal part into the proximal part storage position can preferably be carried with the stroller seat attached to the stroller chassis (in particular without folding the stroller chassis itself). Preferably, the stroller chassis can remain in a position in which it can still be used (e.g. in a position in which it can still be used, in particular in a maximum unfolded position). This further increases the flexibility and versatility of operation.

[0022] Preferably, the stroller seat can be arranged in different orientations on the stroller chassis (in particular from a forward orientation, where the child looks away from different stroller pushers, to a rearward orientation, where the child looks towards different stroller pushers). To set up different orientations (e.g. forward and rearward orientations), the stroller seat can be correspondingly removed (and rotated, e.g. by 180°) and re-attached in another position. However, it is also conceivable that the stroller seat in principle remains on the stroller chassis in such rearrangement (for which a corresponding rotation mechanism may be provided). In general, the rotations described here are (at least essentially) rotations around a vertical axis.

[0023] Furthermore, the stroller seat (as a whole) can be rotated (at least substantially) about a horizontal axis relative to the stroller chassis, preferably at an angle of 60°-120°, more preferably at an angle of (at least about) 90°, in particular when the stroller chassis is folded. This allows the stroller arrangement to be configured in a particularly compact manner. In particular, the seat surface can be attached to a frame part of the stroller chassis so as to be swivellable (at least substantially about a horizontal axis). Furthermore, a corresponding swiveling mechanism can be configured such that the stroller seat is rotated relative to the stroller chassis when the stroller chassis is folded (optionally triggered by the folding process).

[0024] In one embodiment, the stroller seat can be partially or completely accommodated within the envelope surface of the stroller chassis when the stroller chassis is folded. In this kind of embodiment, no additional (structural) space is required for the stroller seat, thereby allowing a very compact storage of the stroller arrangement.

[0025] In the use position of the child car seat, the angle βg between the seat surface (notionally extended if necessary) and the proximal part of the backrest (where the symbol "g" is hereinafter abbreviated to the use position) is preferably between 90° and 180°, while the distal part of the backrest is (essentially) oriented in the same direction as the proximal part and is subsequently connected to its end remote from the seat surface, thereby encompassing (including) the angle αg of the distal part between 160° and 180° and the angle γg of the seat surface (notionally extended if necessary). In the storage position of the child car seat, both the seat surface and the distal / proximal sections of the backrest can be oriented (essentially) in the same direction, with the proximal part of the backrest at least partially and optionally overlapping the seat surface, and the two sections of the backrest possibly at least partially, preferably at least for the most part, completely overlapping.

[0026] To transition the child seat from the use position to the storage position, the distal portion of the seat back can be rotated in a first rotation of (at least about) 180° about a first axis of rotation, and subsequently or at least partially overlapping in time (optionally together with the distal portion connected to the proximal portion) can be rotated in a second rotation, preferably in the opposite direction to the first rotation and at a different angle, about a second axis.

[0027] In a preferred embodiment, the distal part is rotated relative to the proximal part (by an angle Δα of at least about 180°) and the proximal part is rotated backwards or downwards (preferably Δβ=at least about 180°-γg) relative to the seat or a virtual extension of the rear part, such that the angle γ between the distal part and the seat (or optionally the respective virtual extension) varies by Δγ between 90° and 180°.

[0028] In an alternative embodiment, the distal part is rotated backwards or downwards (angle Δα of at least about 180°) relative to the proximal part, and the proximal part is rotated relative to the bearing surface or its imaginary extension (preferably by Δβ=at least about 180°-γg). The angle γ between the distal part and the bearing surface (optionally the respective imaginary extension) varies by Δγ between 0° and 90°.

[0029] Preferably, the use position (of the backrest and / or the proximal part) can be locked. Then, as an optional first step, the distal part can be unlocked relative to the proximal part and the rotation of the distal part can be started. Moreover, simultaneously or (only) after at least a partial rotation or preferably only a partial (possibly complete) rotation of the distal part, the proximal part can be unlocked relative to the seat, so that during or after further rotation of the distal part, the proximal part (opposite side of the seat) can also rotate. In this process, one of the two parts of the distal part and the proximal part can stop its rotation before the other part, or both parts can stop their rotation simultaneously. In a preferred embodiment, the rotation of the distal part relative to the proximal part and the rotation of the proximal part relative to the seat surface are performed simultaneously, whereby the rotation of one can be forced by the other. In a specific embodiment, this can be realized, for example, by a four-bar link joint, the first side of which is formed by at least one part of the seat surface and the second side adjacent to the first side is formed by at least one part of the proximal part. A specific mechanism for this is described in German Utility Model 202017100792U1, which describes a corresponding mechanism for the stroller frame disclosed therein (including a central release mechanism in the horizontal part of the backrest frame and transmission via a Bowden cable).

[0030] The child car seat can be optionally locked or locked in a storage position (at the backrest and / or proximal part) as required. Any lock can be provided, in particular a lock for each use position, or a double action unlocking (i.e. in particular two operations in succession or simultaneously) can be required. Furthermore, the child car seat can optionally have a rotation mechanism, such as the mechanism disclosed in Chinese Utility Model Publication No. 201183515Y.

[0031] Furthermore, the child car seat can be configured as a suspended seat, i.e. as a seat without rigid parts (from the circumferential frame), at least in the region of the backrest. In such an embodiment, the suspended seat can be made of textile or other suitable material, which can be reinforced, for example, with inserts (for example, inserts of two plastics, in particular polyethylene, advantageously hinged together).

[0032] In a preferred application, the stroller seat of the invention can be mounted on a foldable stroller chassis. It is further preferred that when folding the stroller chassis, the entire stroller seat or its seat surface is rotated (relative to the bearings of the stroller seat) through a predefined angle, preferably of (at least about) 90°, so that the entire stroller seat in the storage position and the folded stroller chassis are particularly compact and the stroller seat is (wholly or partly) located within the volume (defined by the envelope surface) of the folded stroller chassis.

[0033] Preferably, the baby car seat of the present invention is used with a rotation mechanism on a foldable baby car chassis. The independent movement of the baby car seat to a storage position and the folding of the baby car chassis makes it possible to provide an inexpensive baby car that can be folded compactly in a very simple manner both when the seat is facing in the direction of travel and when it is facing away from the direction of travel.

[0034] Further embodiments emerge from the dependent claims.

[0035] In the following, the invention is explained using exemplary embodiments which are explained in more detail using the drawings. [Brief description of the drawings]

[0036] [Figure 1a] FIG. 1a shows the stroller in a first position. [Figure 1b]FIG. 1b is a schematic diagram showing an overview of the baby car seat of the present invention. [Diagram 2] FIG. 2 shows the stroller of FIG. 1a in a second position. [Diagram 3] FIG. 3 shows the stroller of FIG. 1a in a third position. [Figure 4] FIG. 4 shows the stroller seat of the stroller of FIG. 1a in a first position. [Diagram 5] FIG. 5 shows the stroller seat of FIG. 4 in a second position. [Figure 6] FIG. 6 shows the stroller seat of FIG. 4 in a third position. [Figure 7] FIG. 7 shows the stroller seat of FIG. 4 in a fourth position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] In the following description, the same reference numbers are used for identical and equivalent parts.

[0038] FIG. 1a shows a stroller (without cushioning) according to the invention. The stroller comprises a stroller chassis 10 and a stroller seat 11 (without cushioning). The stroller chassis 10 comprises a frame-like structure and (in this embodiment four) wheels 12, while the stroller seat 11 is mounted on a bearing 13 (with a horizontal strut or tube in this embodiment). The stroller seat 11 can be removed from this bearing 13 (and repositioned, for example by rotating it 180°) to set both a forward driving position (as shown in FIG. 1a) and a reverse driving position. Both the stroller chassis 10 and the stroller seat 11 are configured to be foldable (each separately). The stroller chassis 10 can be folded, for example, in the same way as in the printed publication German Utility Model 202017100792U1. Specifically, the stroller chassis can be folded by moving the front wheels towards the rear wheels, bringing them closer together (or even lining up the front and rear wheels). Additionally, the distal slider portion 14 can be pivoted relative to the proximal slider portion 15. The folded position is shown in FIG. 3.

[0039] Additionally, the backrest 16 of the stroller seat 11 has a distal portion 17 and a proximal portion 18, the distal portion 17 being pivotable relative to or connected to the proximal portion 18 (as will be described in more detail below).

[0040] As shown in Figure 2, the distal portion 17 can be pivoted (forward) relative to the proximal portion 18 of the backrest 16 until it abuts the proximal portion at its end position (as shown in Figure 2). At the same time (or at the time of overlap), the proximal portion 18 can be pivoted (backward) relative to the seat surface 19 so as to be in the position shown in Figure 2, whereby it is aligned (at least essentially) parallel to (but facing away from) the seat surface.

[0041] As shown in figure 3, the stroller seat 11 is (completely) contained within the volume (defined by the envelope surface) of the stroller chassis 10. This allows an overall compact storage position to be achieved.

[0042] 4 to 7 in particular illustrate how the stroller seat can be displaced from a use position (in FIG. 4) to a storage position (in FIG. 7). In the position of FIG. 4, a child can be accommodated and the stroller can be used accordingly. To displace the stroller seat to the storage position of FIG. 7, the (manual) actuator 20 is first actuated to unlock the distal part 17 relative to the proximal part 18, which can then be pivoted (forward by an angle β1, with β1<βg, see FIG. 1a for the definition of the angle) relative to the proximal part 18. As can be seen from FIGS. 4 and 5, the proximal part 18 initially remains in a fixed position relative to the seat surface 19 (the proximal part 18 is locked relative to the seat surface 19). If the distal part 17, starting from the position of FIG. 5, is now further pivoted (forward, at an angle β2 equal to β1 plus β2, at least approximately equal to βg, see FIG. 1a for the definition of the angles) relative to the proximal part 18, this pivoting movement of the distal part releases the lock between the proximal part 18 and the seating surface 19, so that during the further pivoting movement of the distal part 17 relative to the proximal part 18 (see FIG. 6), the proximal part 18 also pivots (backward, at an angle Δα at least approximately equal to αg, see FIG. 1a for the definition of the angles) relative to the seating surface 19. Overall, the distal part 17 is pivoted relative to the seating surface 19 at an angle Δγ at least approximately equal to γg (forward, see FIG. 1a for the definition of the angles). FIG. 7 shows the final position.

[0043] Furthermore, in Figures 4 to 7 it is shown how the angle α between the distal part 17 and the proximal part 18 is continuously reduced (starting at least approximately from 180°) (to an angle of at least approximately 0°, or to an angle of at least less than 10°). In the overlap of time (during the period shown in the positions of Figures 5 to 7), the angle β between the proximal part and the plane defined by the seat surface is also reduced (at least approximately) to 0°. The mechanism described in Figures 4 to 7 can also correspond to the mechanism (for a stroller chassis) described in German Utility Model 202017100792U1. Of course, other solutions are also conceivable.

[0044] Element 21 (see, e.g., FIG. 4) may be a reinforcing element provided in the cushioning (not shown) so as to pivot together with the pivoting of the entire backrest. The element may also preferably have a distal element portion 22 and a proximal element portion 23 (see FIG. 4).

[0045] It should be noted that at the time of filing this application, all the above-mentioned components, parts, considered separately and in any combination, are claimed as essential to the invention, particularly the details shown in the drawings, modifications of which will be obvious to those skilled in the art. The inventions described in the claims of the original application immediately prior to division are set forth below. [1] A stroller seat (11) for attachment to a stroller chassis (10) having a seat surface (19) and a backrest (16), The backrest (16) has a distal portion (17) and a proximal portion (18) rotatable relative to the distal portion; This allows the backrest (16) to be folded from an extended backrest use position to a folded backrest storage position, resulting in a baby car seat. [2] The stroller seat according to [1], characterized in that the proximal portion (18) is rotatable with respect to the seat surface (19) of the stroller seat (11), in particular in such a way that the proximal portion (18) can be displaced from an upright proximal use position to a flattened proximal storage position. [3] The stroller seat according to [1] or [2], wherein the length of the distal portion (17) is 0.5 to 1.5 times, preferably 0.8 to 1.2 times, the length of the proximal portion (18). [4] the proximal portion (18) and the distal portion (17) in the backrest use position subtend an angle of at least 170°, in particular an angle of at least about 180°; and / or the proximal portion (18) and the distal portion (17) in the backrest storage position subtend an angle of less than 20°, preferably less than 8°, and more preferably at least approximately lie against each other; and / or The proximal portion (18) and the seating surface (19) in the proximal use position subtend an angle of between 90° and 180°, and / or The stroller seat of any one of [1] to [3], wherein the proximal portion (18) and the seat surface (19) in the proximal storage position subtend an angle of more than 150°, preferably more than 170°, and more preferably at least about 180°, or subtend an angle of less than 20°, preferably less than 8°, and more preferably at least approximately lie against each other. [5] The baby car seat (11) is configured such that a rotation of the distal part (17) relative to the proximal part (18) for folding down the backrest (16) occurs simultaneously before and / or during at least a partial rotation of the proximal part (18) and / or after a rotation of the proximal part (18) relative to the seat surface (19) for flattening the baby car seat (11). [6] 6. The baby car seat according to any one of claims 1 to 5, characterized in that the distal portion (17) is rotatable forwards, backwards or downwards relative to the proximal portion (18) in order to fold it into the backrest use position. [7] the proximal part (18) and the distal part (17) can be locked together in the backrest use position and / or in the backrest storage position; and / or The baby car seat of any one of [1] to [6], characterized in that the proximal portion (18) and the seat surface (19) can be locked to each other in the proximal portion use position and / or the proximal portion storage position. [8] the locking of the proximal part (18) relative to the seating surface (19) can be adjusted and / or released exclusively at will by rotation of the distal part (17) relative to the proximal part (18); and / or The stroller seat of any one of [1] to [7], characterized in that the lock of the proximal portion (18) relative to the distal portion (17) can be adjusted and / or released by a manual actuator. [9] A stroller device comprising a stroller chassis (10) and a stroller seat (11) according to any one of [1] to [8].

[10] The stroller apparatus according to [9], wherein the stroller seat (11) is removably attached to the stroller chassis (10) and / or is rotatable about a substantially vertical axis relative to the stroller chassis (10).

[11] The stroller device according to [9] or

[10] , wherein the stroller chassis (10) is foldable.

[12] The stroller device according to any one of [9] to

[11] , characterized in that the movement of the backrest (16) to the backrest storage position and / or the movement of the proximal part (18) to the proximal part storage position can be performed with the stroller seat (11) attached to the stroller chassis (10) without folding the stroller chassis (10) itself.

[13] The stroller device according to any one of claims [9] to

[12] , wherein the stroller seat (11) can be configured in different orientations on the stroller chassis (10).

[14] The stroller device according to any one of [9] to

[13] , characterized in that the entire stroller seat (11) is rotatable relative to the stroller chassis (10) at least substantially around a horizontal axis, preferably around an angle of 60° to 120°, and more preferably around an angle of at least about 90°, particularly when the stroller chassis (10) is folded.

[15] A stroller device according to any one of [9] to

[14] , characterized in that the stroller seat (11) in a folded state of the stroller chassis (10) can be partially or completely accommodated within the envelope surface of the stroller chassis (10). [Explanation of symbols]

[0046] REFERENCE SIGNS LIST 10... stroller chassis, 11... stroller seat, 12... wheel, 13... bearing, 14... distal slider portion, 15... proximal slider portion, 16... backrest, 17... distal portion, 18... proximal portion, 19... seat, 20... (manual) actuator, 21... element, 22... distal element portion, 23... proximal element portion

Claims

1. A stroller seat (11) configured to be removably attached to a stroller chassis (10), comprising: The baby car seat (11) comprises a seat surface (19) and a backrest (16), The backrest (16) has a distal portion (17) and a proximal portion (18) rotatable relative to the distal portion; This allows the backrest (16) to be folded from an extended backrest use position to a folded backrest storage position; The proximal portion (18) is rotatable relative to the seat surface (19) of the baby car seat (11); the proximal portion (18) is movable from a proximal use position to a proximal storage position; the angle between the proximal portion (18) and the seat surface (19) in the proximal storage position is greater than 150° or less than 20°; said proximal portion (18) and said distal portion (17) in said backrest storage position at least approximately lie on each other; A stroller seat (11), characterized in that there are no parts of the stroller chassis (10) lying between the proximal part (18) and the distal part (17).

2. 2. The baby car seat (11) of claim 1, wherein the proximal use position is an upright proximal use position and the proximal storage position is a flattened proximal storage position.

3. The baby car seat (11) according to claim 1 or 2, characterized in that the length of the distal portion (17) is 0.5 to 1.5 times the length of the proximal portion (18).

4. The baby car seat (11) according to claim 1 or 2, characterized in that the length of the distal portion (17) is 0.8 to 1.2 times the length of the proximal portion (18).

5. the angle between the proximal portion (18) and the distal portion (17) in the backrest use position is at least 170°; and / or the angle between the proximal portion (18) and the distal portion (17) in the backrest storage position is less than 20°; and / or the angle between the proximal part (18) in the proximal use position and the seat surface (19) is between 90° and 180°; and / or 3. The baby car seat (11) according to claim 1 or 2, characterized in that the angle between the proximal part (18) in the proximal storage position and the seat surface (19) is more than 170° or less than 8°.

6. the angle between the proximal portion (18) and the distal portion (17) in the backrest use position is at least about 180°; and / or the angle between the proximal portion (18) and the distal portion (17) in the backrest storage position is less than 8°; and / or 3. The baby car seat (11) according to claim 1 or 2, wherein the angle between the proximal portion (18) and the seat surface (19) in the proximal storage position is at least about 180°.

7. 3. The baby car seat (11) according to claim 1 or 2, characterized in that the baby car seat (11) is configured such that a rotation of the distal part (17) relative to the proximal part (18) for folding the backrest (16) occurs simultaneously before and / or during at least a partial rotation of the proximal part (18) and / or after a rotation of the proximal part (18) relative to the seat surface (19) for flattening the baby car seat (11).

8. 3. The baby car seat (11) according to claim 1 or 2, characterized in that the distal part (17) can be rotated forwards, backwards or downwards relative to the proximal part (18) in order to fold it into the backrest use position.

9. the proximal part (18) and the distal part (17) can be locked together in the backrest use position and / or in the backrest storage position; and / or 3. The baby car seat (11) according to claim 1 or 2, characterized in that the proximal part (18) and the seat surface (19) can be locked to each other in the proximal use position and / or in the proximal storage position.

10. the locking of the proximal part (18) relative to the seating surface (19) can be adjusted and / or released by rotation of the distal part (17) relative to the proximal part (18); and / or Baby car seat (11) according to claim 1 or 2, characterized in that the locking of the proximal part (18) to the distal part (17) can be adjusted and / or released by a manual actuator.

11. A stroller arrangement, characterized in that it comprises a stroller chassis (10) and a stroller seat (11) according to any one of the preceding claims.

12. 12. The stroller apparatus according to claim 11, characterized in that the stroller seat (11) is rotatable about a substantially vertical axis relative to the stroller chassis (10).

13. 13. The stroller arrangement according to claim 11 or 12, characterized in that the stroller chassis (10) is foldable.

14. The stroller device according to claim 11 or 12, characterized in that the displacement and transition of the backrest (16) to the backrest storage position and / or the displacement and transition of the proximal part (18) to the proximal part storage position can be performed with the stroller seat (11) attached to the stroller chassis (10).

15. The stroller device according to claim 14, characterized in that the displacement and transition of the backrest (16) to the backrest storage position and / or the displacement and transition of the proximal part (18) to the proximal part storage position can be performed with the stroller seat (11) attached to the stroller chassis (10) without folding the stroller chassis (10) itself.

16. 13. The stroller arrangement according to claim 11 or 12, characterized in that the stroller seat (11) is configurable in different orientations on the stroller chassis (10).

17. 13. The stroller arrangement according to claim 11 or 12, characterized in that the stroller seat (11) is rotatable relative to the stroller chassis (10) at least substantially about a horizontal axis.

18. 18. The stroller apparatus according to claim 17, characterized in that the stroller seat (11) is rotatable relative to the stroller chassis (10) at least substantially around a horizontal axis through an angle of between 60° and 120°.

19. 18. The stroller apparatus according to claim 17, characterized in that the stroller seat (11) is rotatable relative to the stroller chassis (10) at least substantially about a horizontal axis when the stroller chassis (10) is folded.

20. 20. The stroller device according to claim 19, characterized in that the stroller seat (11) in the folded state of the stroller chassis (10) can be partially or completely accommodated within the envelope surface of the stroller chassis (10).

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