Stroller frame and stroller

Description

[0001] The invention relates to a stroller frame and a stroller.

[0002] A foldable stroller frame is known, for example, from DE 10 2014 110 215 A1. Stroller frames of the type discussed here, in particular sports stroller frames, buggies, or similar vehicles for children, are used for the practical transport of babies and toddlers. A common problem with these stroller frames is often the space they require when not in use. Especially during transport, it is advantageous if the stroller can be folded, and the conversion of the stroller frame should be as easy as possible for the user.

[0003] The state of the art proposes various folding mechanisms that convert the stroller frame from a use position to a storage position. At least in the use position, the stroller must be secured against accidental activation of the folding mechanism. If necessary, a safety device can also be provided for the storage position.

[0004] Foldable strollers typically have a hinged design that allows, for example, a handlebar and front and / or rear legs to rotate relative to each other or to lock their position. If a locking mechanism is provided for the storage position, this is often implemented through a separate mechanism.

[0005] DE 20 2005 008 369 U1, for example, discloses a stroller that can be folded between an unfolded state and a folded state.

[0006] US 2009 / 0020984 A1, for example, discloses a collapsible stroller and, in particular, a one-handed operating mechanism for a collapsible stroller.

[0007] DE 20 2007 011 019 U1, for example, discloses a folding sports stroller, in particular a folding sports stroller with a pair of foldable and angle-adjustable push arms for folding the sports stroller.

[0008] US 2010 / 0308550 A1 discloses a stroller having a collapsible wheel frame with a lockable pivot base for pivotally supporting a foldable upper frame and a release mechanism attached to the foldable upper frame for actuating the folding of the collapsible wheel frame and the foldable upper frame.

[0009] However, the known folding mechanisms are generally considered disadvantageous. In particular, several separate operations are required by the user to transfer the stroller from its use position to the storage position (or vice versa). For example, the first operation involves unlocking the stroller from the side to the use position, and the second operation involves folding the frame, possibly with automatic locking in the storage position. Or the first operation involves unlocking the stroller from the side to the storage position, and the second operation involves unfolding the frame, possibly with automatic locking in the use position.

[0010] If no locking mechanism is provided for the storage position, the frame can unfold unintentionally (for example, when loading it into the trunk of a car). Furthermore, the folding mechanism cannot usually be operated with one hand; for example, the frame must first be unlocked from the side (simultaneously on both sides) and then folded – or the frame must first be unlocked from the storage position with one hand and then unfolded with the other hand.

[0011] It is therefore an object of the invention to provide a stroller or a corresponding stroller frame, wherein the frame should be foldable in a simple manner and securing both the use and storage positions should be possible in a simple manner.

[0012] To achieve the above-mentioned object, a stroller frame having the features of claim 1 is proposed. Preferred embodiments are defined in the dependent claims.

[0013] In particular, the object is achieved by a foldable stroller frame, in particular a sports stroller frame, buggy frame or similar vehicle frame for children, wherein the stroller frame is equipped with wheels and with a push bar for pushing the stroller frame, and optionally with fastening means for fastening a stroller attachment, wherein the stroller frame can be brought into a locked use state and into a folded, locked storage state, wherein an actuating device, in particular a manual one, is provided and designed such that when transferring from the locked use state to the locked storage state, at least two locking processes (in particular folding and / or locking processes), namely both a release of the lock in the use state and a setting of a lock in the storage state,be carried out by a single first actuation of the actuating device, wherein upon transfer from the locked storage state to the locked use state, a locking operation, namely a release of the lock in the storage state, is carried out by a single second actuation of the actuating device, wherein the second actuation is preferably an actuation without reversal of movement and / or wherein the second actuation preferably represents a kinematic reversal of the first actuation.

[0014] A (manual) operating device is understood in particular to be an operating device that is accessible to the user (without disassembling the stroller) and can be operated (manually) by the user. Manual operation is understood in particular to be operation by hand and / or foot. The operating device forms in particular a (one-piece) operating element, such as a bar or a lever. A single actuation of the operating device is understood in particular to be a process in which the user operates (in particular moves) the operating device once. A storage state is understood in particular to be a state in which a front and a rear leg or a front and rear pair of legs are moved towards each other (rotated towards) and / or the pusher is moved (rotated towards) a front leg (pair of legs) (starting from the use state).

[0015] A key aspect of the invention is that the stroller frame can be moved from a locked (arrested) use position to a locked (arrested) storage position and, if necessary, back again in a single operation. In a folding joint (for folding the stroller frame), several processes can be triggered simultaneously, overlapping in time, or one after the other in this single operation. Specifically, for example, the pretensioning of a locking device for locking the storage position (the storage state) and the release of a locking device (locking) for the use position (the use state) can occur. The actuation is in particular a (purely) translational and / or (purely) rotational movement or a combination thereof. During actuation, the direction of rotation is preferably not reversed during a rotation and / or the direction is preferably not reversed during a translation.Preferably, the first actuation is an actuation without reversal of movement.

[0016] Overall, the foldable stroller frame according to the invention ensures that the stroller frame can be easily converted from the use state to the storage state while still allowing safe use. In particular, the folding process can be performed with a single operation (possibly one-handed), whereby such an operation is preferably understood to mean a continuous movement sequence (without setting down or changing grips).

[0017] When transferring from the locked storage state to the locked use state, a locking process, in particular a release of the lock in the storage state, is carried out by a single second actuation of the actuating device. The second actuation is preferably an actuation without reversal of movement. Additionally or alternatively, the second actuation can represent a kinematic reversal of the first actuation. A kinematic reversal is understood in particular to mean (in the case of rotational actuation) a reversal or (in the case of translational actuation) a reversal. Advantageously, the opening from the storage state to the use state can also be carried out in a single operation (preferably one-handed).

[0018] Setting a locking position is understood in particular as a process in which the respective state is locked when it is assumed. Setting the locking position can therefore also occur before the respective state is assumed, for example by pre-tensioning a pre-tensioning device (in particular a spring). The mere actuation of the locking position should preferably not be understood as actuation. A (first or second) actuation is therefore understood in particular as a process in which the release of a locking position or the release of a locking position is actively controlled (by the user).

[0019] The actuating device can be configured such that the first actuation results in the release of the locking mechanism in the use state and the adjustment of the locking mechanism in the storage state overlapping at least partially in time, in particular occurring simultaneously, or sequentially in time (possibly at a temporal interval). Alternatively or additionally, the actuating device can be configured such that the second actuation results in the release of the locking mechanism in the storage state and (if implemented) the adjustment of the locking mechanism in the use state overlapping at least partially in time, in particular occurring simultaneously, or sequentially in time (particularly at a temporal interval).

[0020] In a specific embodiment, the actuating device is pivotable to perform the first and / or second actuation. The second actuation preferably involves reversing the pivoting action of the first actuation. Actuation by pivoting is comparatively less susceptible to failure (e.g., compared to telescopic solutions), and in particular, comparatively tolerant to dirt ingress. Comparatively large manufacturing tolerances are also acceptable without significantly limiting functionality. Overall, this results in a reliable and extremely simple way of operating the foldable stroller frame.

[0021] The actuating device can be a component of a slider and / or a bracket, in particular a slider bracket, (or comprise such a bracket) and / or a lever (or comprise such a lever) and / or a flap (or comprise such a lever). Alternatively or additionally, at least one slider section of the slider can be pivotable for adjusting the height of a handle, in particular can be lockable in various pivot positions. Overall, the operation of the folding mechanism is further simplified.

[0022] The actuating device can interact with an adjusting device, preferably via a pulling element, in particular a Bowden cable, wherein the adjusting device is adjustable into at least a first and a second position, wherein the use state is locked in the first position and / or a locking of the storage state is released in the first position and / or wherein the storage state is locked in the second position and / or a locking of the use state is released in the second position. The adjusting device preferably moves translationally, possibly purely translationally, during a transition from the first to the second position. In this case, the actuating device is particularly preferably actuable by (possibly exclusively) rotational pivoting. This enables reliable folding of the stroller frame in a simple manner.

[0023] The adjusting device can comprise a first action transmission device, in particular a first run-on bevel, such that a first locking element is moved out of a locking receptacle when transferred from the first position to the second position in the use state, in particular against the action of a tensioning device, preferably a spring. Alternatively or additionally, the adjusting device can comprise a second action transmission device, in particular a second run-on bevel, such that a second locking element is moved into a locking receptacle when transferred from the first position to the second position in the storage state, in particular against the action of a tensioning device, preferably a spring. The first and / or second locking element can be movable in a rotational and / or translational manner. In a specific embodiment, the first locking element is movable (purely) in a translational manner and the second locking element is movable (purely) in a rotational manner.Overall, the locking processes are further simplified.

[0024] Preferably, one first locking element or a second locking element, in particular the first locking element, is moved axially, and the other, in particular the second locking element, is moved radially. This provides a space-saving and effective structure for the various locking processes.

[0025] The second locking element can have at least two locking element parts that can be moved relative to one another, wherein a tensioning device, in particular a spring, is preferably provided between the locking element parts in such a way that the tensioning device forces the locking element parts apart.

[0026] The storage position can be locked in such a way that the stroller frame can be folded even further (i.e., only a lock against refolding is provided, if necessary). For this purpose, the second locking element and the associated locking receptacle are preferably configured (in particular asymmetrically) in such a way that the storage position is locked against unfolding, while simultaneously allowing further folding.

[0027] Preferably, the slider section of the slider is pivotable for adjusting the height of a handle, in particular lockable in various pivot positions, wherein locking and / or releasing the locking of the use state and / or the storage state occurs by pivoting the pivotable slider section. One idea is therefore to utilize or further develop this pivotability in a slider section that is already pivotable (for height adjustment) so that a locking process can also be carried out. Although conventional slider sections that can be pivoted for height adjustment are arranged comparatively far away from joints for folding the stroller, it was recognized with the invention that overall operation and construction can be simplified.The comparatively long distance between the pivotable slide section and a folding joint can then preferably be bridged by a push and / or pull device, for example a Bowden cable. The present approach is therefore, to a certain extent, a departure from previous solutions in which actuating devices for locking were usually provided directly or in close proximity to the folding joint. Actuation by pivoting is also less susceptible to failure overall (e.g., compared to telescopic solutions), and in particular is comparatively tolerant of dirt ingress. Comparatively large manufacturing tolerances are also acceptable without significantly restricting functionality. Overall, the solution according to the invention enables simple and secure locking, in particular of the usage state.

[0028] The pivotable slide section can preferably be locked in at least two, preferably at least three pivot positions. Alternatively or additionally, the pivotable slide section can be pivotable relative to another slide section. A pivot axis of the pivotable slide section is preferably spaced at least 10 cm, preferably at least 20 cm, from a folding joint. The slide section can be a (U-shaped) bracket overall, with the legs of the bracket being at least 10 cm, or at least 15 cm, and / or at most 30 cm, or at most 25 cm, or at most 20 cm long.

[0029] Preferably, the stroller frame is configured such that the locking of the use state can be released either (only) by two different actuating steps (method steps) that are carried out simultaneously or (only) by three consecutive actuating steps (method steps), wherein the stroller frame has at least one adjustment option by which at least two different use positions can be set, wherein at least one further (at least third) position, namely an unlocking position, can be assumed, in which the locking of the use state is or will be released.

[0030] The adjustment option is, in particular, an adjustment of a frame (or scaffold) of the stroller chassis (in particular with regard to a relative angle between adjacent sections or with regard to a distance between adjacent sections), for example a height adjustment, in particular a height adjustment of the push bar. The transfer from one position (in particular a last use position) to another position (in particular the unlocking position) can preferably be carried out (only) by two simultaneous actuation steps (e.g. pressing a button and pivoting a section, e.g. a lever or a frame part, in particular a push section). Alternatively, this can also be made possible (only) by three (consecutive) method steps.In one embodiment, the same actuation steps (in particular simultaneously) for transferring between the at least two usage positions and for transferring from a (last) usage position to the unlocking position can be performed using the same (or corresponding) actuation steps (method steps), for example, by simultaneously pressing (the same) button or generally the same locking device and moving (in particular pivoting) a section of the stroller frame, in particular a pusher section. Preferably, the unlocking position is not located between the at least two (different) usage positions.

[0031] According to a general idea, an additional position is added to the adjustment options (especially the height adjustment), whereby this additional position is preferably not located between two existing adjustment positions (height adjustment). The additional position is designed in such a way that when it is engaged, the frame lock is released and the stroller can be folded.

[0032] Particularly preferably, two simultaneous process steps are necessary to adjust the adjustment option (height adjustment), in particular the pivoting of the pivotable section, for example, the actuation of the safety device (in particular pressing the button) and the simultaneous displacement (pivoting) of the slide. Preferably, a mechanism is provided between the last use position and the additional position, particularly preferably immediately before reaching the additional position, which prevents (accidental) transfer to the additional position, for example, a stop (or a locking device). This forces the user to actually perform both process steps simultaneously until the transfer to the additional position (and not just to leave the last use position).Preferably, the additional position is designed such that it is unsuitable for normal use, for example at a height and / or position of the pusher that is unsuitable for pushing, in order to make accidental transfer less likely.

[0033] The stroller frame is preferably configured such that pivoting of the pivotable push bar section into a pivoted position, in which locking and / or release of the locking of the use state and / or the storage state occurs, can only be achieved after prior or simultaneous actuation of a securing device, in particular a button, preferably on a horizontal section of the push bar. The button is preferably arranged in the center of the horizontal push bar section. This button can additionally also allow a height adjustment of the push bar, in the sense that a height adjustment can only be achieved by pressing the button (generally: actuation of the securing device) and simultaneously pivoting the pivotable push bar section.

[0034] In particular, in a pivoted position of the pivotable slide section in which it no longer occupies a (meaningfully) usable position (but in particular a position prior to the unlocking position), a stop and / or a locking device, for example, can prevent the slide section from being moved into a pivoted position in which the locking and / or release of the locking of the use state and / or the storage state can occur. Only by actuating the locking device (in particular pressing the button) is the locking and / or release of the locking of the use state and / or the storage state preferably enabled (by then achieving the necessary pivoted position). Preferably, the actuation of the locking device (in particular pressing the button) is required in a pivoted position,in which the pivotable slide section is located in an angular range that lies between a vertical orientation and an orientation antiparallel to the slide section adjoining the pivotable slide section (in which the pivotable slide section therefore comes into contact with the slide section adjoining the pivotable slide section), preferably the actuation of the safety device is required in an angular range that lies between a position of the pivotable slide section in which the pivotable slide section, starting from the vertical extension, is rotated further in the direction of the slide section adjoining the pivotable slide section, for example by an angle of at least 10° or at least 20°, and a position of the pivotable slide section,in which it extends (at least substantially) antiparallel to the slide section adjoining the pivotable slide section or preferably extends at an angle of at least 10° to this adjoining slide section.

[0035] Due to the necessity of activating the safety device (or the corresponding configuration of the stroller frame), a frame locking mechanism is provided which is only possible by two simultaneous process steps (pivoting the pivotable slide section and activating the safety device, in particular pressing the button).

[0036] Preferably, the stroller is configured such that transferring to the unlocking position (additional position) and folding the frame requires a force or torque whose magnitudes and / or directions are different. In particular, the stroller is configured such that a torque for pivoting the pivotable section for locking and / or releasing the locking of the use state and / or the storage state points in a direction that is different from the direction of a torque required for folding the frame. Preferably, the additional position (unlocking position) is further away (at least 1.5 times, or at least 2 times, or 3 times, or at least 5 times) from the last position than (on average) the use positions from each other.

[0037] In general, the stroller frame can have a front leg, in particular a front pair of legs, and at least one rear leg, in particular a rear pair of legs. Each front and rear leg are preferably connected to each other in an articulated manner at a folding joint, to which the push bar can also be connected in an articulated manner. Additionally, a connecting part (connecting rod) can connect the front and rear legs, or possibly the front and rear pair of legs. This connecting part can also be connected to the folding joint in an articulated manner.

[0038] The actuating device can be configured such that the release of the locking mechanism in the use state, the transfer to the storage state, and the locking of the storage state can be carried out with one hand, in particular by gripping and exerting appropriate force, in particular pressing, on a handle, in particular a sliding handle. Alternatively or additionally, the actuating device can be configured such that the release of the locking mechanism in the storage state, the transfer to the use state, and the locking of the use state can be carried out with one hand, in particular by gripping and exerting appropriate force, in particular pulling, on a handle, in particular a sliding handle.

[0039] The above-mentioned object is further achieved by a stroller, in particular a sports stroller, buggy or similar vehicle for children, comprising a stroller frame of the type described above. The stroller can have an integrated holder for the child or a (possibly separable) stroller attachment, in particular a child car seat, high chair frame, child car seat (or the like).

[0040] Further embodiments emerge from the subclaims. The invention is described below using an exemplary embodiment, which is explained in more detail with reference to the figures. Herein: Fig. 1a a stroller frame according to the invention in a side view; Fig. 1b a side view according to Fig. 1a in a different state of the stroller frame; Fig. 1c a side view according to the previous figure in a further state of the stroller frame; Fig. 1d a side view according to the previous figure in a further state of the stroller frame; Fig. 1e a side view according to the previous figure in a further state of the stroller frame; Fig. 1f a side view according to the previous figure in a further state of the stroller frame; Fig. 1g a side view according to the previous figure in a further state of the stroller frame; Fig. 1h a side view according to the previous figure in a further state of the stroller frame; Fig. 1i a side view according to the previous figure in a further state of the stroller frame; Fig. 1j a side view according to the previous figure in a further state of the stroller frame; Fig. 2 an exploded view of a folding joint; Fig.3a shows a first sectional view of the folding joint in a first state; Fig. 3b shows a section of the folding joint in a state according to . Fig. 3a ; Fig. 4a a sectional view of the folding joint analogous Fig. 3a in a different state of the folding joint; Fig. 4b shows a further section of the folding joint in the state according to Fig. 4a ; Fig. 5 a section of the folding joint analog Fig. 3a and 4a in a further state of the folding joint; Fig. 6 a section through the folding joint analogous to the Fig. 3a , 4a and 5 in a further state of the folding joint; Fig. 7 a section analogous to ia Fig. 3a in a further state of the folding joint; Fig. 8 a section analogous to ia Fig. 3a in a further state of the folding joint; Fig. 9 an enlarged section of Fig. 1h .

[0041] In the following description, the same reference numbers are used for identical and equivalent parts.

[0042] Fig. 1a shows a foldable stroller frame with a (central) folding joint 10, via which a push bar 11 and a front leg 12 of a front pair of legs, a rear leg 13 of a rear pair of legs and a connecting part 14 are connected to one another in an articulated manner. A second, correspondingly designed and arranged folding joint can be seen in the drawing according to Fig. 1a be arranged behind the folding joint 10 shown. The elements 12, 13, 14, and / or 46 can also be designed in duplicate. The slider 11, the front leg 12, and the rear leg 13 are rotatable about an axis 15. The connecting part 14 rotates eccentrically with respect to this axis 15 (as will be explained in more detail below). The slider 11 has a distal slider section 16 and a proximal slider section 17. The distal slider section 16 comprises a handle 18 and is articulated to the proximal slider section 17 via a slider joint 19. By pivoting the distal slider section 16 relative to the proximal slider section 17, the height of the handle 18 can be adjusted (for example, in three different positions, in particular a folded-down, a middle, and an upward position).In the various positions, the distal slider section 16 can then be locked relative to the proximal slider section 17, if necessary. To release the locking mechanism, a (central) release mechanism (button) can be provided on the handle 18 (crossbar) of the distal slider section 16.

[0043] The release mechanism (button) can, for example, release a locking device in the slide joint 19 via a pulling element (in particular a Bowden cable).

[0044] Fig. 1b shows the condition (use condition) according to Fig. 1a , whereas in contrast to Fig. 1a the distal slider section 16 is pivoted into a different (middle) position so that the handle 18 is positioned higher. Fig. 1c again shows a position in which the distal slider section 16 is pivoted even further so that the handle 18 is positioned even higher (at maximum height).

[0045] In the condition of use according to Fig. 1a bis 1c The stroller can be used to transport the child (in a stroller carrycot).

[0046] As in Fig. 1d and 1e illustrated, the distal slider section 16 can be moved beyond the position according to Fig. 1c be rotated out ( Fig. 1d ) until it hits the proximal slider section 17 ( Fig. 1e ). As a result, an adjusting element in the folding joint 10 is moved from a first to a second position (in particular against the force of a spring, as described in more detail below). However, it is crucial that the folding joint 10 is locked in accordance with Fig. 1e is solved in such a way that the stroller frame is in the state according to Fig. 1f (folded storage state). The locking of the use state is thus released by pivoting the distal slider section 16. The stroller frame can be configured so that for pivoting from the position according to Fig. 1d in the position according to Fig. 1e at least in an intermediate position between these two positions, in particular immediately before reaching the position according to Fig. 1e During the pivoting operation, a safety device must be activated, in particular a release mechanism (button) (preferably the one mentioned above) must be activated. This makes it at least significantly less likely that the position according to Fig. 1e can be reached unintentionally. Actuation of the safety device, preferably the button, is understood to mean, in particular, an actuation in which the safety device (the button) is actively subjected to pressure (for example, against a spring force).

[0047] In Fig. 1g a situation is shown in which the stroller frame is opposite Fig. 1f is folded even further. In the state according to Fig. 1f The stroller frame is locked against unfolding again, but not (or only to a lesser extent) against further folding, as in Fig. 1g The condition according to Fig. 1g is not locked, so that in this state, when unfolded accordingly, the state according to Fig. 1f can be reached (without moving the distal section 16). However, the stroller frame is secured against further unfolding.

[0048] The further unfolding of the stroller frame into the use position is basically analogous to folding, as shown in the Fig. 1a bis 1f or 1g. First, the distal slider section 16 is pivoted back (see Fig. 1h ), so that the locking mechanism in the folding joint 10 is released again. This allows the stroller frame to be folded down as shown in Fig. 1i und 1j shown, unfolded again. Fig. 1j according to the condition of use Fig. 1c .

[0049] In the following, the Fig. 2-8 the mechanism of locking the use state or storage state is further explained.

[0050] Fig. 2 shows a (partial) exploded view of the folding joint 10 in the state according to Fig. 1a or 1j . Specifically, Fig. 2 an adjusting device 20 (adjusting element) which is radially (here and in the following, unless otherwise stated, always radially and axially) aligned with the axis 15 according to Fig. 1a refer) can be pulled by the upper slide section 16 or a tension element connected thereto (in particular a Bowden cable; not shown in the figures) in the direction of an arrow 21 against the action of a first spring 22. This also moves a first inclined surface (ramp) 23 and a second inclined surface (ramp) 24 in the direction of the arrow 21.

[0051] When the adjusting device 20 moves relative to the joint sections 25a, 25b, a first locking element 26 is displaced in the axial direction and a second locking element 27, comprising a first (outer) locking element part 28 and a second (inner) locking element part 29, is displaced in the radial direction due to the inclined surfaces 23, 24. This displacement or movement of the locking elements 26, 27 occurs against the force of springs (not shown). Fig. 2 shown, located at the reference numerals 31a, 31b and 35), as will be explained below with reference to the Fig. 3a bis 8 described.

[0052] The Fig. 3a und 3b correspond to a condition of the stroller frame according to the Fig. 1a, 1b, 1c oder 1d . In Fig. 3b Locking sections 26a, 26b of the first locking element 26 can be seen, which are positioned in corresponding locking receptacles 30a, 30b. As a result, the folding joint 10 is fixed in such a way that folding is impossible. In the state according to Fig. 3a und 3b The first locking element 26 prevents folding over the folding joint. The second locking element is in Fig. 3a in cross-section. In the state shown in Fig. 3a the second locking element 27 neither secures the use state against folding (this function is performed by the first locking element 26) nor is the locking element 27 in a state in which it could secure the storage state (as explained in more detail below).

[0053] The Fig. 4a und 4b correspond to the condition according to Fig. 1e In this state, the stroller is still unfolded, but the upper slider section 16 has already been pivoted to its maximum end position. This means that the adjustment device 20 is in accordance with Fig. 2 in the direction of arrow 21 in the radial direction, which Fig. 4a und 4b has consequences shown. Due to the Fig. 2 The locking sections 26a and 26b are forced out of the associated locking receptacles 30a and 30b by the first run-on slope 23 shown, namely against the spring force of second springs (partially not shown in detail; located at 31a and 31b, see Fig. 3b ). The first locking element 26 no longer secures the child seat against folding. The second locking element 27 according to Fig. 4a does not (yet) secure the child seat against folding. However, the second locking element 27 is now in a state in which it ensures the storage state according to Fig. 1f can secure (lock) as soon as this (as in Fig. 1f shown). This is (among other things) the result of a movement of the second locking element part 29 in the direction of the first locking element part 28. The position of the first locking element part 28 corresponds to that according to Fig. 3a However, the position of the second locking element part 29 has changed. Specifically, this change in position causes the third spring (not shown in detail, located at 31, see Fig. 2 and 3a ) so that a spring force acts on a locking projection 32 and the locking projection 32 is generally pushed in the radial direction. However, the locking projection 32 abuts against an inner surface 33 of a surrounding part 34, so that despite the spring force it remains in the position analogous Fig. 3a By the transition or the actuation of the distal slider section 16 (i.e. the transition from Fig. 3a, 3b to 4a, 4b) the fourth spring (not shown in detail in the figures; located at 35, see Fig. 3a ) is compressed. This spring 35 is supported on the one hand on the second locking element part 29 and on the other hand on the inner surface 33 of the surrounding part 34. For this purpose, an opening 36 (see Fig. 2 ) in the first locking element part. The fourth spring 35 therefore basically urges the first spring element in the radial direction inwards. Due to the action of the second inclined surface 24, however, this inward urging is in the state according to Fig. 4a, 4b blocked.

[0054] In Fig. 4a und 4b Neither the first locking element nor the second locking element secures the stroller frame so that it can be folded.

[0055] Fig. 5 shows the folding joint 10 in a state analogous Fig. 1f , i.e. in a folded storage state. The slider 11 is rotated relative to the front leg 12. Due to this rotation, the pre-tensioned locking projection 32 enters a corresponding locking receptacle 37, so that this storage state is locked. However, the locking projection 32 and locking receptacle 37 are configured (asymmetrically) in such a way that upon further folding (to the position according to Fig. 1g ) there is no (or only a low) security, in particular the locking mechanism can be overcome simply by further folding (without triggering any mechanism). This is Fig. 6 (analog Fig. 1g ). In particular, an undercut 38 prevents folding back towards the use state (without corresponding actuation of the actuating device).

[0056] If the actuating device (the distal slide section 16) is now actuated again, i.e. according to Fig. 1h swung back, the second locking element part 29 (see Fig. 7 ) radially inward. This movement is forced by the pretension of the fourth spring 35. Furthermore, the first locking element part 28 is pulled radially inward by the second locking element part 29, so that the locking projection 32 is pulled out of the associated locking receptacle 37 and the locking is released altogether, so that the child seat can be unfolded. The state according to Fig. 1i is in cross-section again in Fig. 8 The condition according to Fig. 1j corresponds to the cross-section according to Fig. 3a .

[0057] As (for example) in Fig. 3a As can be seen, the first locking element part 28 is pivotally mounted about an axis 40 relative to the second locking element part 29, this pivoting being limited by a pivoting limiter 41 (specifically in the form of an elongated hole in the second locking element part, which can interact with a corresponding pin in the first locking element part).

[0058] In the position according to Fig. 1f The stroller can still stand freely on all wheels ("self-standing function"). In the further folded (flatter) second storage position according to Fig. 1g This is no longer possible. From the second storage state according to Fig. 1g The stroller frame can be returned to its original storage position without overcoming any resistance (locking mechanism) Fig. 1f be spent.

[0059] As in Fig. 3 bis 8 In principle, the (in Fig. 3 bis 8 shown) slider 11 are locked relative to the respective front leg 12. All other pivoting parts, namely the rear legs and the connecting part, are also fixed (secured). Furthermore, when slider 11 is folded relative to the front pair of legs 12, the remaining parts (connecting part 14 and rear leg 13) are also automatically folded. This is achieved by the connecting part 14 being folded by a (in Fig. 9 as a dashed circle) pivot axis 43 is pivotable eccentrically relative to the axis 15. Furthermore, the connecting part 14 is firmly connected to a guide part 44, comprising a guide 45. This guide 45 has a guiding function and can also have a securing function (if a corresponding undercut is formed). However, it is crucial that the connecting part 14 moves upwards due to the eccentric pivot bearing, which due to the overall construction, as shown in Fig. 1a shown, leads to the front leg 12 and rear leg 13 approaching each other and moving into Fig. 1a The connecting struts 46 shown approach each other. To enable this, the front leg 12, the rear leg 13, and the respective connecting part 14 can be pivoted relative to each other. Bezugszeichen

[0060] 10Folding joint 11Slider 12Front leg 13Rear leg 14Connecting part 15Axis 16Distal slider section 17Proximal slider section 18Handle 19Slider joint 20Adjustment device (adjustment element) 21Arrow 22First spring 23First bevel 24Second bevel 25aFirst section 25bSecond section 26First locking element 26aLocking section 26bLocking section 27Second locking element 28First (outer) locking element part 29Second (inner) locking element part 30aLocking receptacle 30bLocking receptacle 31Third spring 31a(second) spring 31b(second) spring 32Locking projection 33Inner surface 34Surrounding part 35Fourth spring 36Opening 37Latch holder 38Undercut 40Axis 41Swivel limiter 43Swivel axis 44Sliding element 45Sliding element 46Connecting strut

Claims

1. Foldable perambulator frame, in particular pushchair frame, buggy frame or similar vehicle frame for children, wherein the perambulator frame is equipped with wheels and with a pusher (11) for pushing the perambulator frame, wherein the perambulator frame can be brought into at least one locked state of use and into at least one folded, locked state of storage, wherein an actuating device (16), in particular a manual actuating device, is provided and is designed in such a way that at least two locking operations are carried out during a transfer from the locked state of use to the locked state of storage, namely both a release of the locking in the state of use and an adjustment of a locking in the state of storage by a single first actuation of the actuating device (16), characterized in that, during a transfer from the locked state of storage to the locked state of use, one locking operation, namely a release of the locking in the state of storage, is carried out by a single second actuation of the actuating device (16), wherein the second actuation is preferably an actuation without reversal of movement and / or wherein the second actuation preferably represents a kinematic reversal of the first actuation.

2. Foldable perambulator frame according to claim 1, characterized in that the first actuation is an actuation without reversal of movement.

3. Foldable perambulator frame according to claim 1 or 2, characterized in that the actuating device (16) is configured in such a way that the first actuation entails that the release of the locking in the state of use and the setting of the locking in the state of storage occurs overlapping in time at least in sections, in particular takes place simultaneously, or takes place one after the other in time.

4. Foldable perambulator frame according to one of the preceding claims, characterized in that the actuating device (16) is pivotable for carrying out the first and / or second actuation.

5. Foldable perambulator frame according to one of the preceding claims, characterized in that the actuating device (16) is a component of the pusher (11) and / or is a bar, in particular a pusher bar, and / or is a lever and / or is a flap and / or in that at least one pusher section (16) of the pusher can be pivoted for adjusting the height of a handle, in particular can be locked in various pivot positions.

6. Foldable perambulator frame according to one of the preceding claims, characterized in that the actuating device (16) interacts with an adjusting device (20), preferably via a pulling element, in particular a Bowden cable, wherein the adjusting device (20) is adjustable into at least a first and a second position, wherein the state of use is locked in the first position and / or a locking of the state of storage is released in the first position and / or wherein the state of storage is locked in the second position and / or a locking of the state of use is released in the second position.

7. Foldable perambulator frame according to claim 6, characterized in that the adjusting device (20) comprises a first active transmission device, in particular a first guide bevel (23), in such a way that a first latch element (26), when transferred from the first position to the second position in the state of use, is moved from a latch receptacle (30a, 30b) in particular against the action of a tensioning device, preferably a second spring (31a, 31b), and / or the adjusting device (20) comprises a second active transmission device, in particular a second guide bevel (24), in such a way that a second latch element (27) is moved into a latch receptacle during a transfer from the first position to the second position in the storage state, in particular against the action of a tensioning device, preferably a fourth spring (35).

8. Foldable perambulator frame according to claim 7, characterized in that the first or the second latch element is moved axially and the other latch element is moved radially.

9. Foldable perambulator frame according to claim 7 or 8, characterized in that the second latch element (27) has at least two latch element parts (28, 29) which can be moved relative to one another, wherein a tensioning device, in particular a third spring (31), is provided between the latch element parts (28, 29) in such a way that the tensioning device forces the latch element parts (28, 29) apart.

10. Foldable perambulator frame according to claim 7, 8 or 9, characterized in that the state of storage can be locked in such a way that the perambulator frame can be folded even further, wherein the second latch element (27) and an associated latch receptacle (37) are preferably configured for this purpose, in particular asymmetrically, in such a way that the state of storage is locked against unfolding, but at the same time further folding is made possible.

11. Foldable perambulator frame according to one of the preceding claims, characterized in that the pusher section (16) of the pusher is pivotable for height adjustment of a handle, in particular is lockable in various pivot positions, wherein locking and / or releasing of the locking of the state of use and / or the state of storage is carried out by pivoting the pivotable pusher section (16).

12. Foldable perambulator frame according to one of the preceding claims, characterized in that the pivotable pusher section (16) can be locked in at least two, preferably at least three pivot positions and / or in that the pivotable pusher section can be pivoted relative to a further pusher section.

13. Foldable perambulator frame according to one of the preceding claims, characterized in that the perambulator frame is configured in such a way that the locking of the state of use can be released either by two different actuating steps which are carried out simultaneously or by three successive actuating steps, wherein the perambulator frame has at least one adjustment option by means of which at least two different positions of use can be set, wherein at least one further position, namely an unlocking position, can be assumed in which the locking of the state of use is or will be released.

14. Foldable perambulator frame according to one of the preceding claims, characterized in that the perambulator frame is configured in such a way that a pivoting of the pivotable pusher section (16) into a pivoting position, in which a locking and / or a release of the locking of the state of use and / or the state of storage takes place, can only be assumed after prior or only after simultaneous, i.e. during the pivoting process, actuation of a securing device, in particular a button, preferably on a horizontal section of the pusher.

15. Perambulator, in particular pushchair, buggy or similar vehicle for children, comprising a perambulator frame according to one of the preceding claims.