Stroller with a foldable child seat

Description

[0001] The invention relates to a stroller, in particular a sports stroller, buggy or similar vehicle for children, comprising a stroller frame and a foldable child seat.

[0002] EP 2 275 321 A1 describes a stroller with a frame and a foldable and removable seat.

[0003] WO 2010 / 050804 A1 relates to a child seat at the front of a buggy.

[0004] A variety of child seats that can be connected to a stroller frame are available. These child seats are either permanently attached to the stroller frame or can be attached to the frame as needed.

[0005] However, child seats are not used constantly and must be stored temporarily when not in use. When not in use, a child seat should take up little space, allowing it to be stored on its own or together with the stroller frame. For this purpose, a child seat can often be folded.

[0006] A disadvantage of existing folding child seats is that folding them is very complicated and technically complex. In particular, folding the child seat requires a large number of steps to transfer the seat from the unfolded state (in use) to the folded state (not in use). The large number of folding steps is often difficult to remember, non-intuitive, and mechanically complicated to perform. Previously known folding child seats also pose a significant risk of injury, particularly from fingers and / or hands becoming trapped when folding the child seat. Previously known folding child seats also have a technically complex design.

[0007] The object of the present invention is therefore to provide a foldable child seat which is technically easy to fold and can be converted from the unfolded state into the folded state with technically simple movements.

[0008] This object is achieved by a stroller according to claim 1. Preferred embodiments are defined in the dependent claims.

[0009] The stroller comprises a foldable child seat, comprising a backrest, a seat element, one or more adapter elements, via which the child seat can be connected to a stroller frame, and a first locking element, via which the seat element can be locked with respect to the adapter element or the adapter elements, wherein the first locking element is designed such that by reducing the angle between the backrest and the seat element, the locking of the seat element with respect to the adapter element or the adapter elements can be released.

[0010] One advantage of this is that the locking mechanism of the seat element is technically easy to release. Releasing the locking mechanism of the seat element requires only a single movement, or a mechanically simple action that can be performed by the user with just one hand. Because the locking mechanism of the seat element is easy to release, the child seat can be folded up quickly and easily. Because only one hand is required to release the locking mechanism of the seat element and thus fold up the child seat, the risk of injury, in particular the risk of the user trapping and thus injuring fingers and / or a hand, is reduced. This increases the safety of using the child seat. Furthermore, the child seat is technically simple in design and easy to manufacture.In addition, the movement for folding the child seat is intuitive, so that even a user who is unfamiliar with the child seat can fold it quickly. Another advantage is that the movement of the backrest to fold down / in also releases the seat element for folding down / in. By continuing to reduce the angle between the backrest and the seat element, the backrest eventually touches the seat element and moves the seat element (together with the backrest) towards the adapter element or elements, whereby the child seat is folded up in a space-saving manner. Thus, with a single movement, the backrest and also the seat element (towards the adapter element or elements) can be folded down and the child seat can be folded up.

[0011] The child seat further comprises a restraint element for restraining a child in the child seat and a second locking element for locking the restraint element relative to the seat surface element. The second locking element is designed such that the locking of the restraint element relative to the seat surface element can be released by reducing the angle between the backrest and the seat surface element. The child is securely restrained in the child seat by the restraint element. Furthermore, it is advantageous that the locking of the restraint element is technically easy to release. A further advantage is that both the locking of the seat surface element and the locking of the restraint element can be released by a (mechanically simple) movement of the backrest.This means that only a single movement – ​​reducing the angle between the backrest and the seat element – ​​is required to release both the seat element lock and the restraint element lock. This makes the child seat technically simple and quick to fold. Furthermore, the risk of injury when folding the child seat is reduced because only one mechanically simple movement (moving the backrest towards the seat element) is required to release both locks. This significantly reduces the risk of the user's fingers or hand becoming trapped. Another advantage is that when the backrest is moved to fold the backrest down / in, the restraint element is also released for folding the backrest down / in.By continuing to reduce the angle between the backrest and the seat element, the backrest finally first contacts the restraint element and moves the restraint element towards the seat element and then contacts the seat element and moves the seat element (together with the backrest and the restraint element) towards the adapter element or elements, whereby the child seat is folded in a space-saving manner.

[0012] In one embodiment, the backrest and the seat element are rotatable about a first (common) axis of rotation. One advantage of this is that the child seat is technically designed and manufactured. Furthermore, the first locking element can be technically simply designed. This also makes it technically easy to change the angle between the backrest and the seat element, in particular to increase or decrease it. Furthermore, the ability of the backrest and the seat element to rotate about the same axis of rotation significantly reduces the forces acting on the child seat. This means that the child seat does not need to be as dimensionally stable. This allows more cost-effective materials to be used, making the child seat more cost-effective to manufacture.

[0013] The restraint element can be rotatable about a second axis of rotation. One advantage of this is that the angle between the restraint element and the seat element and / or the adapter element(s) can be easily adjusted.

[0014] In a further embodiment, the backrest and the seat element are rotatable about a first axis of rotation, and the restraint element is rotatable about a second axis of rotation, and the first axis of rotation is not identical to the second axis of rotation. By separating the first axis of rotation from the second axis of rotation, the forces generated are distributed across the child seat. Thus, excessive forces do not occur at any point on the child seat, especially at any of the two axes of rotation, making the child seat less stable and thus lighter. This also makes the child seat more cost-effective to manufacture.

[0015] The backrest can comprise a release device, in particular a release handle, wherein the release device is preferably arranged at an end of the backrest facing away from the first locking element, and the first locking element is designed to lock the backrest with respect to the adapter element or the adapter elements in one or more positions, wherein the child seat is designed such that by actuating the release device, in particular by pulling the release device away from the first locking element, the lock between the backrest and the adapter element or the adapter elements can be released, so that the angle between the backrest and the adapter element or the adapter elements can be changed, in particular reduced. One advantage of this is that the lock of the backrest (with respect to the seat surface element and, if applicable, the retaining element) can be released in a technically simple manner.In particular, only a mechanically simple movement or handle (with one hand) is required to release the backrest lock. Once the backrest lock has been released (in relation to the seat element and the adapter element or elements), the backrest can be moved (around the first axis of rotation) and by reducing the angle between the backrest and the seat element, both the seat element lock and the restraint element lock are released. Thus, with a single movement and a continuous or uninterrupted movement (reducing the angle between the backrest and the seat element), the child seat can be folded up, i.e. the backrest, seat element and restraint element move as close to one another as possible or form the smallest possible angle to one another.This minimizes the space required to store the (folded) child seat when not in use. Furthermore, the risk of injury when folding the child seat is further reduced, as all locking mechanisms (backrest locking, seat locking, and restraint locking) are released by activating the release mechanism and then moving the backrest to reduce the angle between the backrest and the seat base. This reduces the risk of the user trapping fingers or a hand and thus injuring themselves.

[0016] The first locking element can comprise a first gear for locking the seat element relative to the adapter element or elements, wherein the first gear is rotatable about the first axis of rotation in the release position of the seat element. One advantage of this is that the child seat is technically particularly simple to design and manufacture. Furthermore, a gear is very durable and thus increases the longevity and service life of the child seat. Furthermore, a gear is easy to replace, so that the child seat can be repaired technically simply and cost-effectively. The release position of the seat element is the position in which the first locking mechanism (locking mechanism between the seat element and the adapter element or adapter elements) is released.

[0017] In a further embodiment, the first gear is arranged so as to be displaceable along the first rotational axis such that the first gear can be disengaged from the adapter element and / or the seat element, thus releasing the locking of the seat element with respect to the adapter element or adapter elements. As a result, the first locking / locking mechanism (locking / locking mechanism between the seat element and the adapter element or adapter elements) is technically simple and can be released easily.

[0018] The second locking element can comprise a second gear for locking the restraint element relative to the seat surface element, wherein the second gear is rotatable about the second axis of rotation in the release position of the restraint element. One advantage of this is that the child seat is technically particularly simple to design and manufacture. Furthermore, a gear is very durable and thus increases the longevity and service life of the child seat. Furthermore, a gear is easy to replace, so that the child seat can be repaired easily and inexpensively. The release position of the restraint element is the position in which the second locking mechanism (locking mechanism between the restraint element and the seat surface element) is released.

[0019] The second gear can be arranged to be displaceable along the second rotational axis such that the second gear can be disengaged from the retaining element and / or the seat element, thus releasing the locking of the retaining element with respect to the seat element. This results in the second locking mechanism (the locking mechanism between the retaining element and the adapter element or adapter elements) being technically simple and technically easy to release.

[0020] In a further embodiment, the first locking element comprises a third gear for locking the backrest relative to the adapter element(s). One advantage of this is that the child seat is technically particularly simple to design and manufacture. Furthermore, a gear is very durable and thus increases the longevity and service life of the child seat. Furthermore, a gear is easily replaceable, allowing the child seat to be repaired easily and inexpensively.

[0021] In a further embodiment, the child seat is designed such that, by actuating the release device, the third gear can be disengaged to release a locking mechanism between the backrest and the adapter element(s). One advantage of this is that the first locking element is technically simple.

[0022] The first locking element can be connected to the second locking element via a cable pull, in particular a Bowden cable. This makes it possible to release the first locking element at a smaller (or larger) angle between the backrest and the seat element than the second locking element between the restraint element and the seat element. Another advantage is that the (successive) unlocking / unlocking of the first locking element and the second locking element is particularly safe and reliable. Furthermore, a cable pull is technically inexpensive, and thus the child seat can be manufactured cost-effectively. A cable pull is also easy to repair, so that the child seat can be easily repaired. This reduces both manufacturing and repair costs. Furthermore, a cable pull is lightweight, so that the child seat is lightweight and therefore easy to carry.

[0023] A stroller, in particular a sports stroller, buggy or similar vehicle for children, comprising a stroller frame and a child seat with one or more of the combinations of features described above is conceivable. One advantage of this is that the locking mechanism of the seat element can be easily released. Releasing the locking mechanism of the seat element requires only a single movement or a mechanically simple task that can be carried out by the user with just one hand. Because the locking mechanism of the seat element can be easily released, the child seat and thus also the stroller together with the child seat can be folded up quickly and easily. Because only one hand is required to release the locking mechanism of the seat element and thus to fold up the child seat or stroller, the risk of injury, in particular that the user could trap and thus injure fingers and / or a hand, is reduced.This increases the safety of using the stroller. Furthermore, the stroller has a simple technical design and is easy to manufacture. In addition, the movement for folding the child seat or stroller is intuitive, so that even a user who is unfamiliar with the child seat / stroller can fold it up quickly. Another advantage is that moving the backrest to fold down / in also releases the seat element for folding down / in. By continuing to reduce the angle between the backrest and the seat element, the backrest eventually touches the seat element and moves the seat element (together with the backrest) towards the adapter element or elements, whereby the child seat and thus also the stroller together with the child seat are folded up in a space-saving manner.

[0024] Preferred embodiments are set forth in the dependent claims. The invention is explained in more detail below with reference to drawings and exemplary embodiments. Herein: Fig. 1 is a perspective view of an embodiment of the child seat according to the invention; Fig. 2 is a plan view of a section of the child seat from Fig. 1 ; Fig. 3 a perspective view of the Fig. 2 shown section; Fig. 4 a further plan view of the Fig. 2 shown section, with the first cover removed; Fig. 5 a perspective view of the Fig. 4 shown section; Fig. 6 a further plan view of the Fig. 2 and 4 shown section, with the backrest connecting element and the retaining element strut removed; Fig. 7 a perspective view of the Fig. 6 shown section; Fig. 8 another plan view of the Fig. 2 , 4 and 6shown section, with the tension element and the third compression spring removed; Fig. 9 a perspective view of the Fig. 8 shown section; Fig. 10 a further plan view of the Fig. 2 , 4 , 6 and 8 shown section, with the projection and the second gear removed; Fig. 11 a perspective view of the Fig. 10 shown section; Fig. 12 another plan view of the Fig. 2 , 4 , 6 , 8 and 10 shown section, with the outer adapter element half and the third gear removed; Fig. 13 a perspective view of the Fig. 12 shown section; Fig. 14 another plan view of the Fig. 2 , 4 , 6 , 8 , 10 and 12 shown section, with the thrust ring removed; Fig. 15 a perspective view of the Fig. 14 shown section; Fig. 16 another plan view of the Fig. 2 , 4 , 6 , 8 , 10 , 12 and 14 shown section, with the first gear removed; Fig. 17 a perspective view of the Fig. 16 shown section; Fig. 18 a plan view of a backrest connecting element from the Fig. 1-17 ; Fig. 19 a perspective view of the backrest connecting element from Fig. 18 ; and Fig. 20 a perspective view of the outer adapter element half of the child seat from the Fig. 1-17 .

[0025] In the following description, the same reference numbers are used for identical and equivalent parts.

[0026] Fig. 1 shows a perspective view of an embodiment of the child seat 1 according to the invention. The child seat 1 comprises a backrest 10, a seat element 20 and two adapter elements 30, 30', wherein in Fig. 1 only one adapter element 30 is visible (the other adapter element 30' is concealed by the seat element 20). The child seat 1 is mirror-symmetrical with respect to a plane passing through the center of the base region 24 of the seat element 20.

[0027] The backrest 10 serves to support the child's back when sitting or lying in the child seat 1. The child can lean their back against the backrest 10 when sitting or lying in the child seat 1. The seat element 20 serves to support the child's buttocks when sitting or lying in the child seat 1.

[0028] The child seat 1 also comprises a restraining element 40. The restraining element 40 serves to securely hold the child in the child seat 1. This means that the restraining element 40 prevents the child from easily moving the child seat 1 forward (ie in Fig. 1 to the right or top right).

[0029] The backrest 10 comprises two outer struts 12, 12', which connect the upper end 19 of the backrest 10 (i.e., the distal end of the backrest 10 relative to the adapter element 30) to the first locking element 50 (via a respective backrest connecting element 18, 18'). In the upper region, which directly adjoins the upper end 19 of the backrest 10, the outer struts 12, 12' have a distance / free space from a longitudinal section 14 of the backrest 10, which runs in the middle of the backrest 10. When the child is sitting in the child seat 1, the back touches the longitudinal section 14, i.e., the child can lean its back against the longitudinal section 14 of the backrest 10.

[0030] Adjacent to the longitudinal section 14 is a lumbar support area 16 that extends across the entire width of the backrest 10. The lumbar support area 16 is located in the child's lumbar region when the child is sitting in the child seat 1 (as intended). The outer struts 12, 12' merge into or pass through the lumbar support area 16. There is a gap or free space 13 between the lumbar support area 16 and the seat element 20. In this free space 13, in the center of the backrest 10, i.e. - during use - below the longitudinal section 14, there is no support element for the child's back or lumbar region. The lumbar support area 16 is connected to the first locking element 50 via two backrest connecting elements 18, 18'. The backrest connecting elements 18, 18' are located below the lumbar support area 16 and connect it to the first locking element 10 or.the lower end of the backrest connecting element 18 forms part of the first locking element 10.

[0031] The backrest 10 is designed to be mirror-symmetrical to a mirror plane which is perpendicular to the longitudinal section 14 and runs from the upper end 19 of the backrest 10 through the center of the base region 24 of the seat element 20.

[0032] At the upper end 19 of the backrest 10 there is a release device for releasing the third locking mechanism. The release device is in particular a release handle 15, which (in Fig. 1 ) can be pulled upwards.

[0033] The seat element 20 is shell-shaped. The seat element 20 includes a substantially flat base region 24 at its center. The two lateral ends 22, 22' of the seat element 20, which laterally adjoin the base region 24, protrude upwards beyond the base / flat base region 24. When the child is (properly) sitting or lying in the child seat 1, the two lateral ends 22, 22' protrude beyond the base region 24 of the seat element 20 in such a way that the child's buttocks are restricted in lateral movement.

[0034] The seat element 20 is connected to the first locking element 50. The first locking element 50 is near the rear end (in Fig. 2 left) of the seat element 20 and just above the (in Fig. 2 (essentially horizontal) center line of the seat element 20.

[0035] The two outer struts 12, 12' as well as the two backrest connecting elements 18, 18' project laterally beyond the lateral ends 22, 22' of the seat element 20 in such a way that, in the folded state of the child seat 1, the seat element 20 can be at least partially received between the outer struts 12, 12'.

[0036] The child seat 1 further comprises two adapter elements 30, 30' (wherein Fig. 1 only one adapter element 30 is visible). The adapter elements 30, 30' serve to connect the child seat 1 to a stroller frame. Thus, the child seat can be connected to a stroller frame via the adapter element 30 or the adapter elements 30, 30'. The child seat 1 can have just one adapter element 30. More than two adapter elements, e.g. three, four, five, etc., are also conceivable. A higher number of adapter elements makes the child seat even more secure and more firmly connected to the stroller frame. It is also conceivable for the child seat 1 to be connected to the stroller frame via the adapter element 30 or the adapter elements 30, 30' in a way that is non-detachable or difficult to detach.

[0037] The adapter element 30 consists of two adapter element halves 31, 31'. The two adapter element halves 31, 31' form a cavity in which a projection of the stroller frame can be accommodated (tongue and groove connection or tongue and groove connection). Other types of connection are also conceivable.

[0038] The adapter element 30, 30' each includes a release button 33, which can be used to release the connection between the adapter element 30, 30' and the stroller frame. The release button 33 can be pressed in. This unlocks the adapter element 30, 30' and the stroller frame.

[0039] The connection between the child seat 1 and the stroller frame is rigid. This means that the child seat cannot be moved up, down, forwards or backwards, or left or right, as long as the connection between the adapter element 30, 30' and the stroller frame is locked or engaged or locked. After pressing the release button 33, the child seat can be moved upwards (ie upwards in Fig. 2 ) removed from the stroller frame, i.e. lifted up.

[0040] The backrest 10 is rotatable about a first rotation axis 59, which runs centrally through the first locking element 50. The first rotation axis 59 runs through the center point 110 of the first locking element 50 and runs in Fig. 2 perpendicular to the paper plane.

[0041] The seat element 20 can also be rotated about the first axis of rotation 59.

[0042] The retaining element 40 is rotatable about a second rotation axis 69, which runs through the center point 120 of the second locking element 60. The second rotation axis 69 runs in Fig. 2 also perpendicular to the paper plane.

[0043] The first axis of rotation 59 and the second axis of rotation 69 are not identical. The first axis of rotation 59 and the second axis of rotation 69 run parallel to one another. However, it is also conceivable that the first axis of rotation 59 and the second axis of rotation 69 are identical. Thus, it is conceivable that the retaining element 40 is rotatable about the same axis as the backrest 10 and the adapter element 30. It is also conceivable that the first axis of rotation 59 and the second axis of rotation 69 are not identical and do not run parallel to one another. In particular, the first axis of rotation 59 and the second axis of rotation 69 can be skewed to one another.

[0044] In Fig. 1 the child seat 1 is shown in the unfolded state. Here, the seat element 20 is locked in relation to the adapter element(s) 30, 30'. This means that the seat element 20 cannot be rotated about the first axis of rotation 59. Thus, the seat element 20 is fixed in relation to the adapter element(s) 30, 30'. In the locked position, the angle between the seat element 20 and the adapter elements 30, 30' cannot be changed, in particular cannot be reduced. This means that the seat element 20 cannot be moved clockwise (or counterclockwise) towards the adapter elements 30, 30' about the first axis of rotation 59.

[0045] In the locked state, which is Fig. 1 As shown, the backrest 10 is also locked, ie, secured, with respect to the seat element 20. The backrest 10 is also locked, ie, secured, with respect to the adapter element or the adapter elements 30, 30'. The backrest 10 is also not rotatable about the first rotation axis 59 in the locking position, and the angle between the backrest 10 and the seat element 20 is unchangeable in the locking position or locking position of the backrest 10, ie, when the third locking is secured. In Fig. 1 Thus, the angle between the backrest 10 and the seat element 20 as well as the angle between the backrest 10 and the adapter element 30 cannot be changed.

[0046] The angle between the backrest 10 and the seat element 20 is to be understood as the angle between a plane running along the longitudinal section 14 of the backrest 10 from the upper end 19 of the backrest 10 and a plane formed by the flat bottom region 24 of the seat element 20.

[0047] The angle between the adapter element 30, 30' and the backrest 10 is the angle between a plane that intersects the first locking element 50 at its center 110 and extends (in Fig. 2 ) extends substantially downwards along the adapter element 30, and the plane formed by the longitudinal section 14 of the backrest 10 or running along the backrest 10.

[0048] The child seat 1 further comprises a retaining element 40. The retaining element 40 is rotatable about a second rotation axis 69 in the released state (ie in the unlocked state). Fig. 1 the retaining element 40 is shown in the locked state, ie the second lock is locked. In the locked state 40, the retaining element 40 cannot rotate about the second rotation axis 69. The second rotation axis 69 is displaced parallel to the first rotation axis 59. The second rotation axis 69 is located approximately in the middle of the length (in Fig. 2 from left to right) of the seat element 20. The second axis of rotation 69 is located in the plane or at the level of the bottom area 24 of the seat element 20. Thus, the second axis of rotation 69 is located (in Fig. 1 shown unfolded state of the child seat) further away from the backrest 10 than the first axis of rotation 59.

[0049] Fig. 2 shows a (side) view of a section of the child seat 1 from Fig. 1 , namely in particular the first locking element 50 and the second locking element 60. Fig. 3 shows a perspective view of essentially the same section of the Fig. 2 .

[0050] The first locking element 50 has a first cover 51. The first cover 51 is a plastic element that protects the mechanism of the first locking element 50 from the ingress of dust, moisture, etc. and visually seals the first locking element 50 from the outside. A metal alloy or metal as the material or as part of the material of the first cover 51 is also conceivable.

[0051] Fig. 4 shows a further view of the Fig. 2 shown section, with the first cover 51 removed. Fig. 5 shows essentially the same section as Fig. 4 in perspective view.

[0052] Fig. 4 and Fig. 5 consequently show a top view or perspective view of the front of the backrest connecting element 18. Fig. 18 and Fig. 19 show a top view and a perspective view of the back of the backrest connecting element 18 opposite the front.

[0053] The retaining element 40 has two retaining element struts 42, 42', via which the retaining element is each connected to the second locking device 60.

[0054] Fig. 6 shows another view of the Fig. 2 and 4 shown section, wherein the backrest connecting element 18 and the retaining element strut 42 have been removed. Fig. 7 shows a perspective view of the section from Fig. 6 .

[0055] The first locking element 50 has a third gear 52. The third gear 52 has 11 (equidistant from one another) gear teeth 53. The gear teeth 53 extend over a total angle of approximately 180 degrees. The two outermost, opposite gear teeth 53 have a stepped shape. The stepped shape of the two outermost gear teeth 53 is mirror-symmetrical with respect to the first rotation axis 59. The other (nine) gear teeth 53 have a rectangular shape.

[0056] The adapter element 30 has a third internal toothing 54. The third internal toothing 54 has a number of grooves 55. The gear teeth 53 of the third gear 52 engage the grooves 55 of the third internal toothing 54 when the backrest 10 is in the locked position.

[0057] In the locking position of the backrest (third locking position), the third gear 52 also engages with the fourth internal toothing 130 of the backrest connecting element 18 of the backrest 10 (see Fig. 18 and Fig. 19 The fourth internal toothing 130 has 14 grooves. These grooves extend over an angle of approximately 270 degrees. The four outermost grooves of the fourth internal toothing 130 have a stepped shape that complements the two outermost gear teeth 53 of the third gear 52. The six grooves between the outermost grooves of the fourth internal toothing 130 have a rectangular shape. Thus, the third gear 52 can engage with the second internal toothing 61 of the second locking element 60 in exactly four positions. In these four positions, the backrest 10 (or the backrest connecting element 18 of the backrest 10) is locked with respect to the adapter element 30.

[0058] The first locking element 50 has a tension element 56. The tension element 56 has a recess 57 through which the first rotational axis 59 runs. The recess 57 is oval-shaped. The tension element 56 has a side view, ie a view perpendicular to the top view of the Fig. 6 , a triangular shape (this is in Fig. 7 clearly visible). The tension element 56 is connected to a cable / Bowden cable (not shown) via a third compression spring 58. Via this cable, the tension element 56 is connected to the release device or the release handle 15 at the upper end 19 of the backrest 10. The third compression spring 58 holds the tension element 56 in the Fig. 6 or Fig. 7 shown position. By actuating the release handle 15, the tension element 56 is moved in such a way that the third compression spring 58 is compressed and the tension element 56 (in Fig. 6 from bottom right to top left) relative to the third gear 52.

[0059] As a result, the triangular-shaped tension element 56 presses against the projection 81 (see Fig. 8 and Fig. 9 ) on one side and against the backrest connecting element 18 on the other side opposite the first side. Since the backrest connecting element 18 or the backrest 10 does not extend outwards (in Fig. 2 out of the plane of the paper) since the backrest connecting element 18 is firmly connected to the seat element 20 via the first rotation axis 59 (in the axial direction of the first rotation axis 59), the third gear 52 is rotated inwards, ie in the direction of the seat element 20 (in Fig. 6 into the paper plane).

[0060] In the locking / locking position, which is in the Fig. 6-11 As shown, but without the backrest connecting element 18, which is of course necessary for the third locking mechanism, the third gear 52 is in a position such that its gear teeth 53 are partially engaged with the fourth internal gear 130 and partially engaged with the third internal gear 54. In particular, approximately half of each gear tooth 53 is engaged with one internal gear 130 and the other half with the other internal gear 54.

[0061] By actuating the release handle 15, the pulling element 56 is moved, which in turn acts on the third gear 52 in such a way that it is pressed and moved inwards (in the direction of the seat element 20 along the first rotation axis 59). As a result, the gear teeth 53 of the third gear 52 move out of the internal toothing 61 and the third gear 52 moves completely into the third internal toothing 54. This means that no part of the third gear 52, in particular not the gear teeth 53, moves outwards (i.e. away from the seat element 20, out of the plane of the paper in Fig. 5 ). Thus, the backrest 10 can now be rotated relative to the adapter element 30 about the first axis of rotation 59.

[0062] On the Fig. 10 On the rear side of the third gear 52 (not shown), a further spring is arranged, which ensures that the third gear 52 is subjected to a force which moves the third gear 52 outwards (in Fig. 6 , in Fig. 8 and in Fig. 10 out of the paper plane). After releasing the release handle 15, the third compression spring 58 pushes the pulling element 56 back into the Fig. 6 As a result, no more pressure or force is exerted on the third gear 52 inwards, so that the (in Fig. 6 A spring (not shown) on the back of the third gear 52 pushes the third gear 52 out again, so that it partially re-engages with the second internal toothing 61. After the release handle 15 is released, the third gear 52 thus returns to a locking position, so that the backrest 10 is locked with respect to the locking element 30 (third locking).

[0063] In Fig. 6 Two thrust ring projections 92, 92' of the thrust ring 90 can be seen. The two thrust ring projections 92, 92' are located opposite each other with respect to the first rotation axis 59. The two thrust ring projections 92, 92' are partially located in recesses of the outer adapter element half 31 and extend through the recesses, with the recesses directly adjoining the outer circumference of the third gear 52.

[0064] In Fig. 8 is another "layer" in relation to the view of Fig. 4 removed. This means that the third compression spring 58 and the tension element 56 are removed. In the central region of the third gear 52, a slanting element 80 with a projection 81 is formed. This projection 80, together with the tension element 56, causes the third gear 52 to be pushed inward when the pull handle 15 is actuated. Fig. 9 shows a perspective view of the section from Fig. 8 .

[0065] In Fig. 10 The inclined element 80 is removed, thus exposing another "layer" of the first locking element 50. In the inner area (the area located between gear teeth 53 and the first rotation axis 59) is a disc-shaped sliding surface 85. The inclined element 80 can slide over this sliding surface 85, and thus the third gear 52 can rotate relative to the inclined element 80, or the inclined element relative to the third gear 52, about the first rotation axis 59.

[0066] Fig. 12 shows another view of the Fig. 2 , 4 , 6 , 8 and 10 shown section, wherein a part of the first adapter element 30, namely the outer adapter element half 31, and the third gear 52 have been removed. Fig. 13 shows a perspective view of the section from Fig. 12 .

[0067] Clearly visible in Fig. 12 and Fig. 13 is a substantially disc-shaped thrust ring 90, which is arranged or mounted non-rotatably relative to the outer adapter element half 31 about the first rotation axis 59. The thrust ring 90 is rigid or fixed, i.e., non-rotatable, relative to the first gear 95.

[0068] On two opposite sides of the thrust ring 90 with respect to the first rotation axis 59, two (from the plane of the paper in Fig. 12 ) thrust ring projections 92, 92' projecting away from the seat element 20. These project through openings / recesses of the adapter element 30 or the outer (and in Fig. 12 already removed) adapter element half 31.

[0069] When the backrest 10 rotates about the first axis of rotation 59 with respect to the seat element 20, these two thrust ring projections 92, 92' come into contact with two opposite projections 63, 63' of the backrest connecting element 18 (see Fig. 18 and Fig. 19 ). The projections 63, 63' rise slowly in the circumferential direction of the lower circular end of the backrest connecting element 18. As the angle between the backrest 10 and the seat surface element 20 decreases, the projections 63, 63' come into contact with the two thrust ring projections 92, 92'. The thrust ring projections 92, 92' slide or come onto the projections 63, 63', which protrude increasingly further in the circumferential direction of the lower circular end of the backrest connecting element 18. As the angle between the backrest 10 and the seat surface element 20 decreases, the projections 63, 63' press increasingly harder against the thrust ring projections 92, 92', and the thrust ring projections 92, 92' press increasingly harder against the projections 63, 63'.

[0070] Thus, by rotating the backrest 10 about the first rotation axis 59 and thus rotating the projections 63, 63' about the first rotation axis 59, a pressure is exerted on the thrust ring 90 via the thrust ring projections 92, 92', which presses the thrust ring 90 inwards, ie in the direction of the seat surface element 20 (in Fig. 12 into the paper plane).

[0071] The thrust ring 90 sits on the first gear 95. In Fig. 14 The thrust ring 90 is removed so that the first gear 95 can be clearly seen. The first gear 95 is partially engaged with its teeth in the adapter element 30. Due to the inward pressure of the thrust ring 90, the first gear 95 is moved inwards against a spring (not shown), i.e., in the direction of the seat element 20 (in Fig. 12 and in Fig. 14 into the plane of the drawing). Thus, the first gear 95 is disengaged from the first internal toothing 99 of the adapter element 30 or the outer adapter element half 31. The adapter element or the outer adapter element half 31 thus has an internal toothing 99, 54 on both of its sides, ie on the side facing the first cover 51 and on the side facing the seat element 20.

[0072] After the first gear 95 has disengaged from the adapter element 30 or the outer adapter element half 31, the seat element 20 can be rotated about the first rotation axis 59. The seat element 20 has thus reached a release position. In this release position, the angle between the seat element 20 and the adapter element 30 or the adapter elements 30, 30' can be reduced. This allows the seat element 20 to be folded in and moved downward.

[0073] Fig. 14 shows another view of the Fig. 2 , 4 , 6 , 8 , 10 and 12 shown section, with the thrust ring 90 removed. Fig. 15 shows a perspective view of the section in Fig. 14 .

[0074] Fig. 16 shows another view of the Fig. 2 , 4 , 6 , 8 , 10 , 12 and 14 shown section, with the first gear 95 removed. Fig. 17 shows a perspective view of the section in Fig. 16 .

[0075] In Fig. 16 the first gear 95 is removed. In Fig. 17 the first compression spring 98 can be seen, which presses against the first gear 95 and pushes it outwards (in Fig. 16 out of the plane of the drawing, ie away from the seat element 20).

[0076] The first gear 95 has an oblique projection 97. The oblique projection 97 points in Fig. 14 in the direction of the seat element 20, ie it is located in Fig. 14 on the back of the first gear 95. By turning the backrest 10 clockwise in Fig. 2 or Fig. 14 the second tension element 106 (in Fig. 14 to the left). The second tension element 105 moves a cable or Bowden cable that connects the tension element 106 to the second locking element 60. By pulling the cable or Bowden cable (not shown), the second gear 64 is moved inward (toward the seat surface element 20), thus releasing the second locking mechanism (between the retaining element 40 and the seat surface element 20).

[0077] The first locking element 50 comprises the second tension element 105, which is movable in a tension element recess 106. The tension element recess 106 runs in Fig. 16 inclined to the top right at an angle of approximately 5°-10° to the horizontal. A further, second cable pull (not shown) is actuated via the second tension element 105, which moves the second locking element 60 from a locking position to a release position (this corresponds to the second locking position).

[0078] When turning the backrest 10 (in Fig. 2 clockwise) the thrust ring projections 92, 92' come into contact with the projections 63, 63' of the outer adapter element half 31 (see Fig. 18 and Fig. 19 ). The thrust ring projections 92, 92' press against the projections 63, 63' (which increase slowly in the circumferential direction). This pushes the thrust ring 90 inwards (in Fig. 16 into the plane of the paper). This in turn pushes and moves the first gear 92 inwards (towards the seat element 20) against the first compression spring 98. At the same time, the oblique projection 97 of the first gear 92 pushes against the second tension element 105 and moves it away from the second locking element 60 (in Fig. 16 to the left). The second locking element, in particular the second gear 64, is actuated via the second cable or Bowden cable, which is connected to the second pulling element 105, and is disengaged from (the internal toothing) of the retaining element strut 42.

[0079] The second locking element 60 comprises a second gear 64 that engages with grooves 65 of the seat element. Upon actuation of the second cable pull (i.e., by pushing the first gear 52 inward and thereby causing the second tension element 105 to move away from the second locking element 60), the second gear 64 is pressed against a second compression spring 75 such that the second gear 64 is pressed and moved in the direction of the seat element 20 along the second rotation axis 69. As a result, the second gear 64 disengages from the internal toothing of the retaining element strut 42, 42' by moving the second gear 64 completely into the second internal toothing 61 of the seat element 20. After the second gear 64 has thus disengaged from the retaining element strut 42 or the retaining element 40, the retaining element 40 is rotatable about the second rotation axis 69 (relative to the seat surface element 20).

[0080] In the locked position of the retaining element 20 (second locking position), the second gear 64 is partially engaged with the second internal toothing 61 of the seat element 20 and partially engaged with the internal toothing of the retaining element 20 or the retaining element strut 42. In particular, approximately half of the second gear 64 is engaged with one internal toothing 61 of the seat element 20 and the other half with the other internal toothing of the retaining element 20 or the retaining element strut 42.

[0081] When rotating the backrest 10 about the first rotation axis 59 and reducing the angle between the backrest 10 and the seat element 20 (moving the backrest 10 towards the seat element 20, in Fig. 2 clockwise), the locking of the retaining element 40 is first released or unlocked (second locking). By further reducing the angle between the backrest 10 and the adapter element 30 (in the Figuren 2 bis 19 clockwise) or with respect to the retaining element 30, the locking of the seat element 20 with respect to the adapter element 30 is then also released (first locking).

[0082] Thus, after actuating the release device or release handle 15 and moving the backrest 10 clockwise, the retaining element 40 and the seat element 20 can be released and folded in, thus reducing the angle between them and the adapter element 30. This reduces the external dimensions of the folded child seat 1. This allows for easy and space-saving storage.

[0083] The retaining element 30 has a locking position in which the retaining element 30 locks when the child seat 1 is unfolded. This locking position is in Fig. 1 shown.

[0084] The seat element 20 has a locking position in which the seat element 20 locks. This locking position is in Fig. 1 and the Fig. 2-19 shown.

[0085] In the Fig. 1 In the orientation shown, all three locking mechanisms (first locking mechanism, second locking mechanism, third locking mechanism) are fixed, meaning that the backrest 10, the seat element 20, the retaining element 40, and the adapter element(s) 30, 30' are immovable relative to one another. This means that the angle between said elements and thus also the distance between the ends of the elements distal to the first locking element 50 cannot be changed.

[0086] For all three locking devices, a gear 95, 64, 52 is engaged with two internal gears (one external internal gear and one internal internal gear). To release the respective locking device, the respective gear 95, 64, 52 is turned inwards (into the Fig. 2 , 4 , 6 , 8 , 10 , 12 , 14 and 16 into the plane of the paper, ie, toward the seat element 20) against a compression spring, so that the respective gear is received in the respective inner toothing (ie, the toothing arranged closer to the seat element 20). As a result, the respective outer toothing is rotatable relative to the respective gear 95, 64, 52 and thus relative to the respective inner toothing about the first axis of rotation 59 or second axis of rotation 69. List of reference symbols

[0087] 1 Child seat 10 Backrest 12, 12' Outer struts 13 Free space 14 Longitudinal section 15 Release handle 16 Lumbar support area 18, 18' Backrest connecting element 19 Upper end of the backrest 20 Seat element 22, 22' Side ends 24 Floor area 30, 30' Adapter element 31, 31' Adapter element halves 33 Release button 40 Retaining element 42, 42' Retaining element strut 50 First locking element 51 First cover 52 Third gear 53 Gear teeth of the third gear 54 Third internal gear 55 Grooves 56 First tension element 57 Recess 58 Third compression spring 59 First pivot axis 60 Second locking element 61 Second internal gear 63, 63'Protrusions of the backrest element 64second gear 65grooves 69second rotation axis 75second compression spring 80inclined element 81projection 85sliding surface 90thrust ring 92,92'thrust ring projection 95first gear 97slanted projection 98first compression spring 99first internal toothing 105second tension element 106tension element recess 110center of the first locking element 120center of the second locking element 130fourth internal toothing,

Claims

1. Baby carriage, in particular a stroller, buggy or similar vehicle for children, comprising a baby carriage frame and a collapsible child seat (1) that comprises - a backrest (10), - a seat surface element (20), - one adapter element or multiple adapter elements (30, 30') via which the child seat (1) can be connected to the baby carriage frame, wherein the baby carriage comprises: - a first locking element (50), by means of which the seat surface element (20) can be locked in relation to the adapter element or adapter elements (30, 30'), wherein the first locking element (50) is designed in such a way that by reducing the angle between the backrest (10) and the seat surface element (20), the locking of the seat surface element (20) with respect to the adapter element or adapter elements (30, 30') can be released, - characterized by: - a second locking element (60), by means of which a restraining element (40) for restraining a child in the child seat (1) can be locked in relation to the seat surface element (20), wherein the second locking element (60) is designed in such a way that the locking of the restraining element (40) with respect to the seat surface element (20) can be released by reducing the angle between the backrest (10) and the seat surface element (20).

2. Baby carriage according to claim 1, wherein the backrest (10) and the seat surface element (20) are rotatable about a first axis of rotation (59).

3. Baby carriage according to one of the preceding claims, wherein the restraining element (40) is rotatable about a second axis of rotation (69).

4. Baby carriage according to one of the preceding claims, wherein the backrest (10) and the seat surface element (20) are rotatable about a first axis of rotation (59) and the restraining element (40) is rotatable about a second axis of rotation (69), and wherein the first axis of rotation (59) is not identical to the second axis of rotation (69).

5. Baby carriage according to one of the preceding claims, wherein the backrest (10) comprises a release device, in particular a release handle (15), wherein the release device is preferably arranged at an end of the backrest (10) facing away from the first locking element (50), and the first locking element (50) is designed to lock the backrest (10) in relation to the adapter element or adapter elements (30, 30') in one or more positions, wherein the child seat (1) is designed in such a way that by operating the release device, in particular by pulling the release device away from the first locking element (50), the locking between the backrest (10) and the adapter element or adapter elements (30, 30') can be released, so that the angle between the backrest (10) and the adapter element or adapter elements (30, 30') can be changed, in particular reduced.

6. Baby carriage according to claim 2 or 4, wherein the first locking element (50) comprises a first gearwheel (95) for locking the seat surface element (20) with respect to the adapter element or the adapter elements (30, 30'), wherein the first gearwheel (95) is rotatable about the first axis of rotation (59) in the release position of the seat surface element (20).

7. Baby carriage according to claim 6, wherein the first gearwheel (95) is arranged to be displaceable along the first axis of rotation (59) in such a way that the first gearwheel (95) can be disengaged from the adapter element (30, 30) and / or the seat surface element (20) and thus the locking of the seat surface element (20) with respect to the adapter elements (30, 30') can be released.

8. Baby carriage according to one of the preceding claims if dependent on claim 3 or 4, wherein the second locking element comprises a second gearwheel (64) for locking the restraining element (40) with respect to the seat surface element (20), wherein the second gearwheel (64) is rotatable about the second axis of rotation (69) in the release position of the restraining element (40).

9. Baby carriage according to claim 8, wherein the second gearwheel (64) is arranged to be displaceable along the second axis of rotation (69) in such a way that the second gearwheel (64) can be disengaged from the restraining element (40) and / or the seat surface element (20) and thus the locking of the restraining element (40) with respect to the seat surface element (20) can be released.

10. Baby carriage according to one of the preceding claims, wherein the first locking element (50) comprises a third gearwheel (52) for locking the backrest (10) with respect to the adapter element or the adapter elements (30, 30').

11. Baby carriage according to claim 5 and 10, wherein the child seat (1) is designed such that the third gearwheel (52) can be disengaged by operating the release device to release a lock between the backrest (10) and the adapter element or adapter elements (30, 30').

12. Baby carriage according to one of the preceding claims, wherein the first locking element (50) is connected to the second locking element (60) via a cable, in particular a Bowden cable.