stroller

Abstract

The invention relates to a stroller (1) with a frame (2), with several wheels (3) arranged on the frame (2) by means of which the frame (2) is supported on a surface (4) on which the stroller (1) stands or moves, with a shell (5) arranged on the frame (2) which has a seat (8) or a reclining position (6) for a child (7) and a shell rim (9) surrounding the seat (8) or reclining position (6), with at least one airbag (10) for protecting the child (7) in the event of a crash and with an airbag control unit (11) for detecting a crash and for triggering the respective airbag (10) in the event of a crash. Improved protection for the child (7) results when two airbags (10) are provided, namely a first airbag (10') extending along a first edge region (12') of the shell rim (9), and a second airbag (10") extending along a second edge region (12") of the shell rim (9) opposite the first edge region (12'), and when the two airbags (10', 10") are configured to inflate towards each other in the event of a crash.

Description

[0001] The present invention relates to a stroller according to the preamble of claim 1.

[0002] A comparatively high proportion of crashes between a motor vehicle and a stroller occur when crossing a street due to a moment of inattention on the part of the person (male / female / diverse) driving the vehicle and pushing the stroller. Fortunately, the impact speed between the vehicle and the stroller is usually relatively low. Nevertheless, in such a sideways collision, the stroller can be knocked over, creating an increased risk of injury to the child, especially if the child falls out of the stroller due to the overturning stroller.

[0003] From KR 101 829 047 B1 a generic stroller is known which has a frame and several wheels arranged on the frame, by means of which the frame is supported on a surface on which the stroller is standing or moving. A shell is arranged on the frame, which has a seat for a child and a shell edge running around the seat. The stroller is also equipped with an airbag to protect the child in the event of a crash, as well as an airbag control system to detect a crash and to trigger the airbag in the event of a crash. In the known stroller, the airbag is integrated into a bar which extends in a U-shape from one side of the frame forward around the shell to the other side of the frame. The bar has a multi-section configuration. In the event of a crash, the inflating airbag ensures that the bar fans out upwards and downwards, forming an abutment for the airbag as it inflates towards the shell.The protection for the child in the event of the stroller falling over sideways is relatively low.

[0004] DE 10 2004 007 017 A1 discloses another stroller in which the shell is formed by an inflatable structure. When inflated, the shell can form or accommodate a child's bed. When deflated, the stroller can be folded up very compactly.

[0005] US 2014 / 0 008 959 A1 discloses a child safety seat that includes a seat shell for a child and a harness for securing the child sitting in the seat shell. Integrated into the harness are airbags that inflate in the event of a crash, increasing the area of ​​contact between the straps and the child.

[0006] Another vehicle child seat is known from US 2013 / 0 147 247 A1.

[0007] The present invention addresses the problem of providing an improved or at least a different embodiment for a stroller of the type mentioned above, which is characterized by a high level of protection for the child in the event of a crash.

[0008] This problem is solved according to the invention by the subject matter of the independent claim. Advantageous embodiments are the subject matter of the dependent claims.

[0009] The invention is based on the general idea of ​​equipping the stroller with two counter-rotating airbags which move towards each other in the event of a crash, thereby more or less encircling the child laterally and protecting them from falling out of the stroller. For this purpose, a first airbag is proposed which extends along a first edge region of the shell edge, and a second airbag which extends along a second edge region of the shell edge opposite the first edge region. Furthermore, the two airbags are configured so that they inflate towards each other in the event of a crash. Because the two airbags expand towards each other in the event of a crash, the child in the shell is laterally encircled in the event of a crash, whereby the child is held back in the shell even if the stroller falls over.

[0010] In the present context, a ‘configuration’ is synonymous with a ‘design’, so that the phrase ‘configured so that’ is synonymous with the phrase ‘designed so that’.

[0011] A particularly advantageous embodiment is one in which the two airbags are configured so that, in the event of a crash, they inflate toward each other and away from the edge of the shell, or rather, away from the shell. This improves the lateral grip of the child in the shell. In particular, this can prevent a collision between the airbag and the child during inflation.

[0012] A particularly advantageous embodiment is one in which the two airbags are configured so that in the event of a crash, they expand toward each other until they meet. In other words, in the event of a crash, the two airbags inflate to such an extent that they form a continuous bar extending from the first edge area to the second edge area, thus improving the child's protection.

[0013] A particularly advantageous embodiment proposes that a first closure element of a hook-and-loop fastener is arranged on the first airbag in such a way that it moves in the direction of the second airbag when the first airbag inflates. In addition, a second closure element of the hook-and-loop fastener, complementary to the first closure element, can be arranged on the second airbag in such a way that it moves in the direction of the first airbag when the second airbag inflates. Furthermore, the two closure elements of the hook-and-loop fastener can now be configured in such a way that they adhere to one another when the two airbags collide in the event of a crash. In other words, if the airbags expand so far in the event of a crash that they collide, they remain adhered to one another via the hook-and-loop fastener, preventing them from rebounding off one another. The aforementioned closed bracket formed by the inflated airbags remains closed.In this way, the protective effect of the airbags can be improved.

[0014] For practical purposes, the two airbags can extend approximately halfway along the shell's edge. This ensures that, in the event of a crash, the two airbags completely seal the open side of the shell bordered by the shell's edge. This effectively prevents the child from falling out of the shell.

[0015] According to an advantageous embodiment, a front shell end and a rear shell end can be opposite each other in a stroller's longitudinal direction. The two edge regions in which the two airbags are arranged can then be located on two shell sides that are opposite each other in a stroller transverse direction, which runs transversely to the stroller's longitudinal direction. Typically, the shell of a stroller is longer in the stroller's longitudinal direction than in the stroller's transverse direction. By accommodating the airbags in the shell sides that are opposite each other in the stroller's transverse direction, the distances the airbags have to travel to overlap the seat or cot to protect the child are shortened. This allows the airbags to be smaller, so they can be inflated more quickly and reliably.

[0016] A particularly advantageous embodiment is one in which the first airbag extends in the first edge area from the front end of the shell across one side of the shell to the rear end of the shell, while the second airbag extends in the second edge area from the front end of the shell across the other side of the shell to the rear end of the shell. This allows, in particular, complete closure of the open side of the shell in the event of a crash. In the event of a crash, the shell and the inflated airbags form a protective cocoon that completely envelops the child in the seat or cot.

[0017] In principle, each airbag can be assigned a separate gas generator, which is controlled by the airbag control system to inflate the respective airbag. However, a preferred embodiment is one in which a common gas generator is assigned to both airbags and is connected to the two airbags via separate pressure lines. The gas generator is controlled to generate gas in the event of a crash, with the two pressure lines supplying the gas generated by the gas generator to the two airbags to inflate them. The use of a common gas generator for both airbags supports synchronous deployment and synchronous expansion of the two airbags.

[0018] According to an advantageous embodiment, the shell edge can have a recess in the respective edge region, in which the respective airbag is housed and which is closed with a cover configured to be detachable from the shell edge in the event of a crash when the respective airbag inflates. Furthermore, it is clear that the shell can be provided with a fabric cover that also extends over the shell edge and thus conceals the covers. The cover can expediently be equipped with a predetermined breaking seam in the area of ​​the covers to facilitate the inflation of the airbags in the event of a crash.

[0019] In another advantageous embodiment, a receiving chamber, in which the gas generator is located, can be formed in a base area of ​​the shell bordered by the shell edge. The airbag control unit can also be housed in this receiving chamber. The pressure lines can then conveniently run in the shell between an inner shell side facing the seat or bed and an outer shell side facing away from the inner shell side, from the receiving chamber to the recesses. This allows the airbags, the gas generator, and the pressure lines to be housed virtually invisibly in the shell, thereby improving the visual appeal of the stroller.

[0020] Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures based on the drawings.

[0021] It is understood that the features mentioned above and those to be explained below can be used not only in the respective combination specified, but also in other combinations or on their own, without departing from the scope of the invention as defined by the claims. Components mentioned above and those to be mentioned below of a higher-level unit, such as a device, apparatus, or arrangement, which are designated separately, may form separate parts or components of this unit or be integral areas or sections of this unit, even if this is shown differently in the drawings.

[0022] Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components.

[0023] They show, schematically, Fig. 1 a highly simplified side view of a stroller with a cot, Fig. 2 a highly simplified side view of the stroller with seat, Fig. 3 an isometric view of a stroller shell in a normal state, Fig. 4 an isometric view of the stroller shell with the airbags deployed, Fig. 5 a highly simplified sectional view of the stroller in the area of ​​the shell, Fig. 6 an enlarged detail VI from Fig. 5, Fig. 7 a sectional view as in Fig. 5, but with deployed airbags, Fig. 8 an enlarged detail VIII from Fig. 7.

[0024] According to the Fig. 1 and Fig. 2, a stroller 1 comprises a frame 2 and several wheels 3 arranged on the frame 2, by means of which the frame 2 rests on a surface 4 on which the stroller 1 stands or travels. A shell 5 is arranged on the frame 2, which in the example of Fig. 1 a lounger 6 for a in the Fig. 5 and Fig. 7 indicated child 7. In the example of Fig. 2, the shell 5 has a seat 8 for the child 7. The shell 5 also has a shell rim 9 that surrounds the bed 6 or the seat 8.

[0025] Furthermore, the stroller 1 is equipped with at least one airbag 10 to protect the child 7 in the event of a crash, which also includes a Fig. 5 and Fig. 7 indicated airbag control 11 is provided, which is configured to detect a crash and to trigger the respective airbag 10 in the event of a crash.

[0026] The following is based on the Fig. 3 to 8 the design and arrangement of the respective airbag 10 using the example of the shell 5 of the stroller 1 of Fig. 1, which is equipped with the bed 6. It is clear that this configuration is also applicable to the Fig. 2 can be realized in a corresponding manner, the shell 5 of which is equipped with the seat 8.

[0027] According to the Fig. 3 to 8, the stroller 1 presented here is provided with two airbags 10, each arranged in an edge region 12 of the shell edge 9. Specifically, this is a first airbag 10', which extends along a first edge region 12' of the shell edge 9, and a second airbag 10", which extends along a second edge region 12" of the shell edge 9, opposite the first edge region 12'. The two airbags 10', 10" are also configured to inflate towards each other in the event of a crash. Fig. 4 and Fig. 7 shows the inflated state of the two airbags 10', 10" in the event of a crash. It can be seen that the two airbags 10', 10" are preferably configured so that they inflate towards each other in the event of a crash and also away from the shell edge 9 or the shell 5. Furthermore, it is provided that the two airbags 10', 10" are configured so that they inflate towards each other in the event of a crash until they meet. Fig. 4 and Fig. 7 shows a contact zone 13 in which the two airbags 10', 10" meet and rest against each other. According to the Fig. 7 and Fig. 8, it can be provided that in the event of a crash, the two airbags 10', 10" adhere to one another or are fastened to one another in this contact zone 13 by means of a hook and loop fastener 14. For this purpose, a first closure element 15 of the hook and loop fastener 14 is attached to the first airbag 10', while a second closure element 16 of the hook and loop fastener 14 is attached to the second airbag 10", which is designed to be complementary to the first closure element 15. In a hook and loop fastener 14, the two cooperating closure elements 15, 16 form, on the one hand, a hook structure and, on the other hand, a loop structure, which engage with one another upon contact and adhere to one another or are fastened to one another. One of the two closure elements 15, 16 therefore has or forms the hook structure, while the other of the two closure elements 15, 16 then has or forms the loop structure.The first closure element 15 is arranged on the first airbag 10' such that it moves towards the second airbag 10" when the first airbag 10' inflates. In addition, the second closure element 16 is arranged on the second airbag 10' such that it moves towards the first airbag 10' when the second airbag 10" inflates. Furthermore, the two closure elements 15, 16 are configured to adhere to one another when the two airbags 10', 10' collide in the event of a crash. In other words, the two closure elements 15, 16 are arranged to form the contact zone 13 and close the hook-and-loop fastener 14 in the event of a crash, so that the deployed airbags 10', 10" are held together in the contact zone 13.

[0028] According to Fig. 4, the two airbags 10', 10" can extend in the respective edge area 12', 12" approximately over half of the shell edge 9.

[0029] According to the Fig. 1 to 4, the stroller 1 has a carriage longitudinal direction X, indicated by a double arrow, a carriage transverse direction Y and a carriage height direction Z, which are perpendicular to each other. Fig. 1 and Fig. 2, the carriage longitudinal direction X extends horizontally, while the carriage height direction Z extends vertically. The carriage transverse direction Y is in the Fig. 1 and Fig. 2 perpendicular to the plane of the drawing. Accordingly, a front shell end 17 and a rear shell end 18 are spaced apart from one another in the vehicle's longitudinal direction X or are opposite one another in the vehicle's longitudinal direction X. The two edge regions 12, in which the airbags 10 are located, extend along two shell sides 19, 20 that are opposite one another in the vehicle's transverse direction Y. The first airbag 10' extends in the first edge region 12' from the front shell end 17 across one shell side 19 to the rear shell end 18. The second airbag 10" extends in the second edge region 12" from the front shell end 17 across the other shell side 20 to the rear shell end 18.The two airbags 10', 10" are expediently constructed symmetrically so that in the event of a crash they meet essentially along a center plane of the shell 5, which is formed centrally in the shell 5 with respect to the vehicle transverse direction Y and extends in the vehicle longitudinal direction X and the vehicle height direction Z. Accordingly, the contact zone 13 is preferably also located in this longitudinal center plane of the shell 5.

[0030] According to the Fig. 5 to 8, a common gas generator 21 can be assigned to the two airbags 10', 10", which is connected to the two airbags 10', 10" via two separate pressure lines 22. The gas generator 21 is coupled to the airbag control 11 and is controlled by the latter to generate gas in the event of a crash. For example, the gas generator 21 operates pyrotechnically, and the airbag control 11 actuates a suitable igniter to ignite the gas generator 21 with the aid of a corresponding electrical signal. The gas generated by the gas generator 21 in the event of a crash is then supplied to the two airbags 10', 10" via the two pressure lines 22, which leads to the inflation of the airbags 10.

[0031] According to the Fig. 5 to 7, the shell edge 9 can have a recess 23 in the respective edge region 12, in which the respective airbag 10 is accommodated. In Fig. 6, the shell edge 9 is shown enlarged in the area of ​​the recess 23. The recess 23 can be closed with a cover 24. This cover 24 is expediently configured so that it can be detached from the shell edge 9 in the event of a crash when the respective airbag 10 inflates. Fig. 6 also indicates that the shell 5 can be provided with a shell cover 25, which also extends over the shell edge 9. The shell cover 25 can cover an inner shell side 26 facing the seat 8 or the bed 6, as well as an outer shell side 27 facing away from the inner shell side 26. In the example shown here, a padding 28 is also formed on the inner shell side 26, which can also be covered by the shell cover 25. The shell cover 25 can have a predetermined breaking seam in the area of ​​the respective cover 24, which promotes the deployment of the respective airbag 10 in the event of a crash.

[0032] Like the Fig. 5 and Fig. 7, the shell 5 can contain a receiving chamber 30 in a base region 29 bordered by the shell edge 9, in which the gas generator 21 is located. The airbag control 11 can expediently also be arranged in this receiving chamber 30. Likewise, a battery (not shown) for supplying electrical energy to the airbag control 11 can be arranged in the receiving chamber 30 or at another suitable location. Furthermore, it is provided here that the two pressure lines 22 run within the shell 5, namely between the shell inner side 26 and the shell outer side 27, extending from the receiving chamber 30 to the respective recess 23 and fluidly connecting the common gas generator 21 to both airbags 10', 10". QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] KR 101 829 047 B1

[0003] DE 10 2004 007 017 A1

[0004] US 2014 / 0 008 959 A1

[0005] US 2013 / 0 147 247 A1

[0006]

Claims

[1] Stroller (1), - with a frame (2), - with several wheels (3) arranged on the frame (2), by means of which the frame (2) rests on a surface (4) on which the stroller (1) stands or travels, - with a shell (5) arranged on the frame (2), which has a seat (8) or a bed (6) for a child (7) and a shell edge (9) surrounding the seat (8) or the bed (6), - with at least one airbag (10) to protect the child (7) in the event of a crash, - with an airbag control (11) for detecting a crash and for triggering the respective airbag (10) in the event of a crash, characterized by , - that two airbags (10) are provided, namely a first airbag (10') extending along a first edge region (12') of the shell edge (9), and a second airbag (10") extending along a second edge region (12") of the shell edge (9) opposite the first edge region (12'), - that the two airbags (10', 10") are configured to inflate towards each other in the event of a crash. [2] Stroller (1) according to claim 1, characterized by , - that the two airbags (10', 10") are configured so that in the event of a crash they inflate towards each other and away from the shell edge (9). [3] Stroller (1) according to claim 1 or 2, characterized by , - that the two airbags (10', 10") are configured in such a way that in the event of a crash they inflate towards each other until they hit each other. [4] Children's cheeks (1) according to claim 3, characterized by , - that a first closure element (15) of a hook-and-loop fastener (14) is arranged on the first airbag (10') in such a way that it moves in the direction of the second airbag (10") when the first airbag (10') is inflated, - that on the second airbag (10") a second closure element (16) of the hook-and-loop fastener (14) complementary to the first closure element (15) is arranged such that it moves in the direction of the first airbag (10') when the second airbag (10") is inflated, - that the two closure elements (15, 16) of the hook-and-loop fastener (14) are configured so that they adhere to one another when the two airbags (10', 10") collide in the event of a crash. [5] Stroller (1) according to one of the preceding claims, characterized by , - that the two airbags (10', 10") extend in the respective edge area (12', 12") approximately over half of the shell edge (9). [6] Stroller (1) according to one of the preceding claims, characterized by , - that a front shell end (17) and a rear shell end (18) are opposite each other in a longitudinal direction (X) of the carriage, - that the two edge regions (12', 12") in which the two airbags (10', 10") are arranged are located on two shell sides (19, 20) which are opposite one another in a transverse direction (Y) of the vehicle which runs transversely to the longitudinal direction (X) of the vehicle. [7] Stroller (1) according to claim 6, characterized by , - that the first airbag (10') extends in the first edge region (12') from the front shell end (17) over one shell side (19) to the rear shell end (18), while the second airbag (10") extends in the second edge region (12") from the front shell end (17) over the other shell side (20) to the rear shell end (18). [8] Stroller (1) according to one of the preceding claims, characterized by , - that both airbags (10', 10") are assigned a common gas generator (21) which is connected to the two airbags (10', 10") via separate pressure lines (22), - that the gas generator (21) is activated to generate gas in the event of a crash, - that in the event of a crash, the two pressure lines (22) supply the gas generated by the gas generator (21) to the two airbags (10', 10") to inflate the airbags (10', 10"). [9] Stroller (1) according to one of the preceding claims, characterized by , - that the shell edge (9) has a recess (23) in the respective edge region (12', 12"), in which the respective airbag (10', 10") is accommodated and which is closed with a cover (24) which is configured such that it can be detached from the shell edge (9) in the event of a crash by the respective inflating airbag (10', 10"). [10] Stroller (1) according to claims 8 and 9, characterized by , - that in a bottom region (29) of the shell (5) enclosed by the shell edge (9) a receiving chamber (30) is formed, in which the gas generator (21) is arranged, - that the pressure lines (22) in the shell (5) run between an inner shell side (26) facing the seat (8) or the bed (6) and an outer shell side (27) facing away from the inner shell side (26) from the receiving chamber (30) to the recesses (23).

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