Tethering system for child seats

Abstract

A telescoping system (100) for securing a child car seat (10) and / or a child car seat base (11) to a vehicle seat (1), the telescoping system (100) comprising a first section (110) and a second section (120), the first section and the second section being longitudinally displaceable relative to one another to adjust the length of the telescoping system (100), a first latch (200) being anchored within or to a surface of the second section, the telescoping system being capable of at least a first configuration, a second configuration, and a third configuration, the first configuration allowing the length of the telescoping system (100) to be adjusted, the second configuration allowing the length of the telescoping system (100) to be adjusted to a limited extent compared to the first configuration, and the third configuration allowing the length of the telescoping system (100) to be adjusted to a further limited extent compared to the second configuration or not at all.

Description

Detailed Description of the Invention

[0001] The present invention relates to a telescoping system for securing a child car seat and / or a base for a child car seat to a vehicle seat.

[0002] A child car seat is understood by those skilled in the art to be a child restraint system intended for transporting a child in a vehicle, preferably an automobile.

[0003] In this connection, it should be noted that in the context of the present invention, the term "child seat" should be understood as a generic term for (typical) child seats, infant carriers, booster seats, booster cushions, etc. Therefore, the features provided for child seats in the context of the present invention are in principle also applicable to infant carriers, and vice versa, unless otherwise specified. The same applies to the term "child", which should also be understood as a generic term for children, infants and toddlers.

[0004] It should be noted that in the context of the present invention, the term "child seat" should be understood as a generic term for (typical) child seats, infant carriers, booster seats, booster cushions, etc. For example, a child seat according to the present invention may be a typical child seat (for larger children, e.g., a group I / II and / or III child seat) that is structurally separated from the seating area and has a backrest that can be tilted relative to the seating area as required. The structural boundary between the two can be formed, for example, by a bend or the like. In general, however, (unless stated otherwise in the specific context) a child seat should always be understood as a shortened form of "child seat, e.g., infant carrier, booster seat and / or booster cushion," or in the context of the present invention, features provided for (typical) child seats are in principle also applicable, for example, to infant carriers, booster seats and / or booster cushions (unless stated otherwise), and vice versa. The same applies to the term "child", which should also be understood as a generic term for children, infants and toddlers. So-called "infant carriers" often comprise a single-piece shell for holding an infant or child, and may include a separate belt system, possibly a headrest, and possibly other components. Such "infant carriers" do not have a (structurally separate) backrest, but rather a rear portion that joins to a "seat area" that can accommodate the child's buttocks.

[0005] The term "child seat base" is understood by those skilled in the art to mean in particular a base to which a child seat can be removably or irremovably fastened.

[0006] Child seats, infant carriers, booster seats, etc. that can be tethered to vehicle seats have been known for some time. Such child seats, infant carriers, booster seats, etc. provide a seating position for children, infants, and small children, offering them a high level of protection, particularly in the event of an accident and / or emergency braking. Such child seats can be secured using the vehicle's belt system or by an Isofix fastening system. This fastening system secures the child seat to the vehicle seat in the event of an accident, thereby keeping it in place on the vehicle seat and preventing it from being thrown forward, particularly in the event of a rear-end collision and / or emergency braking.

[0007] Because such child seats are often swapped or installed and removed between different vehicles, particularly motor vehicles, it is particularly important that the child seat's removable tethering allows for ease of handling, although ease of handling should not come at the expense of the child's safety on the road or in the event of an accident.

[0008] Therefore, the attachment of the child car seat to the vehicle seat must be as stable as possible, but at the same time, it is desirable that the attachment allow a certain degree of adjustability to allow optimal adaptation to different car seats.

[0009] An adjustable telescoping system for anchoring a child restraint system to a vehicle seat is known, for example, from EP 3600954 B1. However, the anchoring system disclosed in this document consists of a large number of different individual parts, which means that the design requires improvement in terms of manufacturing costs and susceptibility to malfunction during use.

[0010] The object of the present invention is therefore to propose a telescoping system for fastening a child car seat and / or a base for a child car seat to a vehicle seat, which meets the above-mentioned requirements in terms of stability, ease of use, safety and versatility as cost-effectively and as few defects as possible.

[0011] This problem is solved in particular by the features of claim 1.

[0012] In particular, the problem is a telescoping system for fastening a child car seat and / or a base for a child car seat to a motor vehicle seat, the telescoping system comprising a first section and a second section, the first section and the second section being displaceable relative to one another (longitudinal) in order to adjust the length of the telescoping system (the sections being guided relative to one another by at least one first guide, one of the first section and / or the second section preferably being guided relative to at least one other of the first section and the second section). The above-mentioned problems are solved by a nesting system, wherein the first latch is guided longitudinally, directly or indirectly, by a first guide portion, the first latch is anchored within the second section or to a surface, the nesting system being capable of being in at least a first configuration, a second configuration, and a third configuration, wherein in the first configuration, the length of the nesting system is adjustable, in the second configuration, the length of the nesting system is adjustable to a limited extent compared to the first configuration, and in the third configuration, the length of the nesting system is adjustable to a further limited extent compared to the second configuration, or is (at least substantially) impossible.

[0013] One idea of ​​the present invention is that, in contrast to the above-mentioned prior art, the length of the telescoping system is advantageously adjusted according to the above-mentioned arrangement by only one latch, namely the first latch, As a result, the telescoping system of the present invention is characterized by structural simplicity and at the same time does not have functional limitations compared to the prior art (having two latches).

[0014] Unless expressly stated otherwise, terms such as "first," "second," etc., e.g., first hook or second spring, are used to distinguish different elements from one another. Thus, referring to a first spring or a second spring does not necessarily imply that there must be more than one spring.

[0015] The first section and the second section are displaceable relative to each other, which should be understood in particular to mean that the first section and the second section can be moved relative to each other (in particular in a translational direction, preferably longitudinally).

[0016] Additionally, the telescoping system may include a moving element (described in more detail below) suitable for actuating the first latch to move from the extended position to the retracted position.

[0017] Preferably, the first section is or can be optionally detachably fastened to a child car seat or a base for a child car seat and / or is at least partly formed integrally with the child car seat or base for a child car seat, and the second section is preferably provided for detachable fastening to a vehicle seat (the vehicle seat having in particular a seat and a backrest) and has a proximal end and a distal end, further preferably provided in the region of the distal end of the second section with at least one or exactly one first hook suitable for engaging around a bracket provided on the vehicle side, in particular an Isofix anchor or an anchor according to ISO standard 13216 or United Nations Economic Commission for Europe standard R145, in order to connect the telescoping system to the vehicle seat, and the first hook is switchable between a first position, in which the telescoping system is not connected to the vehicle seat, and a second position, in which the telescoping system is connected to the vehicle seat.

[0018] The vehicle seat may have (at least approximately) at least one, preferably exactly two brackets in the transition area between the seat surface and the backrest that can be gripped by (in each case) the first hook of the telescoping system. The child seat or a base for a child seat may have a lower side intended to rest on the seat surface of the vehicle seat. The child seat or a base for a child seat may have a rear side facing the backrest of the vehicle seat and optionally intended to rest against it.

[0019] Sections of the telescoping system may be flush with the underside and / or rear side of the child car seat or child car seat base.

[0020] In an embodiment, the first section and / or the second section at least partially have a (at least substantially) square and / or rectangular cross section.

[0021] The first section and / or the second section are preferably at least substantially profiled (or as profiled) in design, optionally hollow and / or tubular.

[0022] According to an embodiment, the first section and / or the second section have a maximum height (when viewed over their entire longitudinal length) and / or a maximum diameter (when viewed over their entire longitudinal length) of 5 cm or less, preferably 2 cm to 3.5 cm.

[0023] The first section and / or the second section has a maximum width (when viewed over the entire longitudinal length) of 3 cm or less, preferably 1.0 cm to 2.0 cm.

[0024] The first section can partially surround or encase the second section.

[0025] The first section is preferably up to 40cm long and / or at least half as long as the second section and / or at least 2cm, preferably at least 4cm long.

[0026] The second section is preferably at least 4cm long, more preferably at least 8cm long, and / or up to 40cm long, preferably up to 30cm long (e.g. 20cm long).

[0027] In an embodiment, the second section has several protrusions, preferably facing inward, each of which may span the entire width (transverse to the longitudinal direction, particularly the left-right direction) of the second section or a portion of the width, and each of which may be formed as, for example, a ridge and / or a bolt.

[0028] The second section preferably has a first protrusion for supporting the first hook in the first position.

[0029] Additionally, the second section preferably has a second protrusion for guiding the latch, optionally a plurality of second protrusions, and / or at least one third protrusion for guiding the moving element, and at least one optional fourth protrusion of the second section can serve to support the first latch in the extended position.

[0030] The first hook is preferably preloaded toward the first position, particularly by a first spring. In particular, if the first hook is preloaded toward the first position, a second latch (see further below) may be provided in or on the second section of the telescoping system. The first hook may be rotatable about a first axis, which is preferably stationary relative to the second section. Furthermore, the first hook may have a first axle portion or a first bearing portion. The first hook may also have a locking portion suitable for engaging the periphery of a bracket on the vehicle side, and / or may be C- or U-shaped.

[0031] The locking part may in particular have two opposing legs, one of which may adjoin the actuating part of the first hook. The first spring may be anchored, in particular supported and / or attached to the first axis / said first axis of the first hook, and / or the first spring may be designed as a torsion spring.

[0032] Alternatively, the first spring can be anchored, in particular supported and / or mounted, on the first hook at a distance from the first axis and / or the first spring can be designed as a tension spring. Other types of springs are in principle conceivable.

[0033] A first (functional) end of the first spring can be supported on the first hook. A second end of the first spring can be supported on the second section. The first spring and the second spring (see further below) can be identical or formed by a single (first / second) spring that simultaneously preloads the first hook towards the first position and the second latch towards the locked position (see further below). This is preferably achieved by having the first end of the first / second spring supported on the first hook and the second end of the first / second spring supported on the second latch (or optionally a moving element).

[0034] Furthermore, the first hook can be driven to move from the first position to the second position by a force acting on the actuating portion in a longitudinal direction, i.e., from the distal end of the second section to the proximal end of the second section (e.g., as a result of pressing against a bracket on the side of the vehicle seat).

[0035] Preferably, the nesting system is fully retractable into the child car seat or child car seat base, where the first section can be attached to the child car seat or child car seat base so that it is fully retracted or at least partially flush with the child car seat or child car seat base, while the second section can be adjusted relative to the first section so that it is also fully retracted or at least partially flush with the child car seat or child car seat base in at least one position.

[0036] The minimum length of the nested system and the maximum length of the nested system may differ by at least 4 cm, preferably at least 8 cm and / or by at most 30 cm, preferably at most 20 cm.

[0037] The maximum projection of the nesting system relative to the child seat or base for the child seat may be at least 4 cm, preferably at least 8 cm and / or at most 30 cm, preferably at most 20 cm.

[0038] Preferably, the second latch, in particular the second latch already described above, is provided in / on the second section and is adjustable between a locked position in which the second latch holds the first hook in the second position, in particular the locked position already described above and / or a released position in which the second latch does not hold the first hook in the second position.

[0039] The second latch can be preloaded toward the locked position by a second spring, particularly a second spring already described above, particularly a tension spring. A first end of the second spring can be supported on the second latch. A second end of the second spring can be supported on the second section. The first hook and the second latch can be designed and arranged such that when the first hook is in the first position, the first hook holds the second latch in the released position by the hook blocking portion, and further, when the first hook moves to the second position (e.g., by actuating the actuating portion), the second latch can move to the locked position, particularly by being driven by the second spring or the first / second spring.

[0040] The first hook can have an engagement portion into which the second latch slides to engage the locking portion when the first hook is in the second position and the second latch is in the locked position. The second latch can have a first contact portion for contacting a moving element (see below). The second latch can also be L-shaped, in particular with an end of one arm of the L-shaped portion forming the locking portion and / or the other arm of the L-shaped portion forming (wholly or partially) the contact portion. The second latch can be made (at least 50% by weight or at least 80% by weight) of metal, in particular steel. The second latch can be switchable translationally (or rotationally or with a part that moves translationally and rotationally) between the locked and released positions.

[0041] Preferably, the first section has a plurality of recesses, at least 2, preferably at least 4, and / or up to 15, preferably up to 10 (e.g. 8 or 9 or 10), longitudinally spaced from one another and each suitable for receiving a blocking portion of the first latch. The distance between two recesses may be in the range of 1 cm to 2 cm, for example 15 mm, and / or at least 3% and / or up to 50% of the maximum total length. In particular, the recesses may be through-holes.

[0042] Preferably, the first latch of the nestable system has a blocking portion that can selectively engage or disengage with the mating structure, in particular one of the recesses of the first section, for adjusting the second section relative to the first section in terms of the (longitudinal) length of the nestable system, the blocking portion preferably being capable of assuming at least one retracted position corresponding to the first configuration (associated with the retracted position of the first latch) and / or the blocking portion being capable of assuming an extended position corresponding to the second configuration and / or the third configuration (associated with the extended position of the first latch). In particular, the blocking portion is at least partially wedge-shaped.

[0043] Additionally or alternatively, the first latch preferably comprises a first engagement portion for being held in the extended position according to the third arrangement, and the first engagement portion may be adapted to cooperate with a latch blocking portion of the moving element (see further below) to hold the first latch in the extended position when the moving element is in the second, undriven position (see further below).

[0044] Additionally or alternatively, the first latch preferably comprises a second engagement portion for being held in the retracted position according to the first configuration, and the second engagement portion may be adapted to cooperate with a drive portion of the moving element to drive the first latch to the retracted position when the moving element is moved to a drive position (see further below).

[0045] A free space can be provided adjacent to the first engagement portion (particularly as a recess between the first engagement portion and the second engagement portion) so that the latch blocking portion faces the free space when the moving element is in the drive position, thereby preventing the latch blocking portion of the moving element (see below) from blocking the first latch from switching to the retracted position.

[0046] The first latch can be preloaded towards the extended position, in particular by at least a third spring. The first latch can also be rotatable about a second axis, preferably stationary relative to the second section, and for this purpose can have a second axis or a second bearing. The third spring (or possibly at least one-third of the third springs) can be anchored, in particular supported and / or mounted, relative to the first latch on the second axis and / or can be designed as a torsion spring.

[0047] Additionally or alternatively (especially if several third springs are provided), the third spring (or possibly at least one-third of the several third springs) can be anchored to the first latch at a distance from the second axis, in particular supporting and / or mounting it, and / or designed as a tension spring. Other types of springs are also conceivable, in particular two third springs can be provided (redundantly).

[0048] Additionally or alternatively, the first latch preferably comprises a third engagement portion, particularly as part of the blocking portion, which may be adapted to be contacted by the edge of the mating structure (each, particularly as described above), particularly the recess of the first section, according to the second arrangement when a force pushes the first section and the second section towards each other to reduce the length of the telescoping system, the third engagement portion preferably being oblique (slanted) relative to the longitudinal direction, whereby the first latch is pushed towards the retracted position by contact of the third engagement portion and the associated force.

[0049] In the extended position of the first latch, the side of the blocking part opposite the third engagement part can be arranged at least substantially perpendicular to the longitudinal direction (particularly forming an angle of 80° to 100° with the longitudinal direction). Additionally or alternatively, in the extended position of the first latch, the side of the blocking part forming the third engagement part can form an angle with the longitudinal direction in the range of 35° to 55°, preferably 45°.

[0050] Preferably, the telescoping system comprises a moving element, in particular one of those already mentioned above, arranged in the second section and / or on the surface so as to be movably, preferably displaceable (with or without a rotational component) between at least a first non-driven position and a second non-driven position and a driven position, in particular longitudinally displaceable.

[0051] The moving element preferably has a drive portion suitable for selectively interacting with the second engagement portion of the first latch to move the first latch from the extended position to the retracted position. The drive portion may be formed by a surface designed such that at least substantially the longitudinal direction forms a surface normal.

[0052] Additionally or alternatively, the moving element preferably has a latch blocking portion suitable for selectively interacting with the first engagement portion of the first latch to prevent the first latch from being moved from the extended position to the retracted position. The latch blocking portion may have a blocking surface that is straight in the longitudinal direction or inclined at least 5° and / or at most 30°, preferably at most 20°, relative to the longitudinal direction. If the latch blocking portion is inclined, it preferably facilitates or allows the moving element to move from the second undriven position (in which the latch blocking portion prevents the first latch from moving to the retracted position) to the first undriven position (associated with the locked position of the second latch) even when a force is pushing the first latch toward the retracted position.

[0053] Preferably, the first latch and the moving element are adapted to each other in such a way that the force for moving the first latch from the extended position to the retracted position is transmitted to the latch blocking portion to a certain degree (not overwhelmingly) by the first engagement portion, pushing the moving element from the second non-driven position to the first non-driven position.

[0054] Preferably, the first latch is designed as a single piece, possibly a monolithic structure.

[0055] The moving element may be preloaded, particularly by the second spring, toward a first undriven position in which the latch blocking portion does not prevent the first latch from moving from the extended position to the retracted position and the driving portion does not cooperate with the first latch to move the first latch from the extended position to the retracted position. In the first undriven position, a limited range of adjustment of the length of the telescoping system may be permitted or possible. The moving element and the second latch may be designed and arranged such that the second latch is in a locked position when the moving element is in the first undriven position. In one embodiment, the moving element includes a second contact portion for abutting against the first contact portion of the second latch.

[0056] Additionally or alternatively, the moving element is preferably operatively coupled to the second latch such that movement of the moving element, optionally by an actuation element (in a telescoping system), can release or release the second latch to switch between a released position and / or a locked position, in particular movement of the moving element by the actuation element can move the second latch from a locked position to a released position.

[0057] The moving element can be made of plastic (at least 50% by weight or at least 80% by weight), in particular as an injection-molded part. The second latch and the moving element can be rigidly connected to each other, for example by fastening means, and / or parts of the second latch, in particular the first contact part, can be extrusion coated.

[0058] According to this embodiment, if the second latch is made (at least 50% by weight or at least 80% by weight) of metal, in particular steel, and the moving element is made (at least 50% by weight or at least 80% by weight) of plastic, a high degree of stability can be achieved in the relevant areas while saving weight and / or costs.

[0059] In an alternative embodiment, the second latch and the moving element may be unitary in design.

[0060] Generally, in particular the first hook, the first latch and / or the second latch may be made (at least 50% by weight or at least 80% by weight) of metal, in particular steel.

[0061] The moving element may have a second guide portion, optionally a guide groove or slot, and a third protrusion, optionally a guide pin or bolt, between the second section and the moving element, specifically by, for example, a gap.

[0062] In a further embodiment, the moving element has a blocking release portion that is longitudinally movable relative to the other components of the moving element and is preloaded by a fifth spring toward the proximal end of the second section. This embodiment addresses the problem that, at least theoretically, it is conceivable that the first latch could become stuck precisely between the two recesses of the first section and then block the entire telescoping system. This occurs because, if the first latch becomes stuck precisely between the two recesses of the first section and a user attempts to actuate the actuation element to move the second latch from the locked position to the released position and switch the first hook from the second position to the first position, the latch blocking portion of the moving element could advance against the first engagement portion of the first latch. However, according to this embodiment, the moving element, excluding the blocking release portion, is pushed toward the proximal end against the force of the fifth spring, so that the second latch can still move to the released position and the first hook can move to the first position, thereby unblocking the telescoping system.

[0063] In a further embodiment, the moving element can have a detector suitable for being detected, for example, by a sensor for determining the position of the moving element. Thus, the second section can, for example, preferably include a sensor suitable for detecting the position of the moving element. In particular, even when the moving element is in the first, non-driven position and the first hook is in the second position (the telescoping system is coupled to a car seat), it can detect whether a child car seat connected to the telescoping system or a base for a child car seat connected to the telescoping system is in use. The detector and the sensor are preferably adjacent to each other. Furthermore, the detector and the sensor can preferably be disposed between the first latch and the proximal end of the second section, or between the first latch and the first hook.

[0064] The moving element is preferably operatively connected to an actuating element (of the telescoping system) for actuation by a user.

[0065] Preferably, the moving element has a support that is arranged directly on the second section to support the moving element on the second section and, optionally, to allow the moving element to slide along the second section. The support can in particular be designed as a protrusion, and the support can preferably be provided at the height of the latch blocking part, opposite the blocking surface.

[0066] Furthermore, the telescoping system preferably comprises a first pin, in particular fixedly connected to the second section and / or a second pin, in particular fixedly connected to the moving element, the first pin and the second pin preferably being provided for connection to the actuating element / said actuating element, the first section preferably comprising a lateral guide slot extending longitudinally, preferably over at least 50% of the length of the first section, and further preferably both the first pin and the second pin extending through said slot. The minimum and maximum length of the telescoping system can be determined by the lateral guide slot.

[0067] Preferably, the second section has an elongated hole that overlaps a portion of the lateral guide slot of the first section and guides movement of the second pin longitudinally toward or away from the first pin.

[0068] Preferably, the actuating element, in particular the actuating element already mentioned above, is provided to be preferably manually (indirectly or directly) actuated by the user (to set the first, second and third configurations). The fixed part of the actuating element is preferably fixedly connected to the second section, in particular by a first pin / the first pin, and the movable part of the actuating element is preferably operatively connected to the moving element by a second pin and / or is movable relative to the fixed part. Further preferably, the actuating element or its movable part can be blocked by a holding device, in particular a third latch, and a release actuating part can be provided to release the holding device. The actuating element, in particular its release actuating part, can comprise at least one knob and / or at least one button and / or at least one slider and / or at least one operating lever.

[0069] Preferably, the movable part of the actuation element is movable relative to the fixed part (and thus also relative to the second section), in particular against the force of the fourth spring.

[0070] The telescoping system preferably has an installed position (see further below) in which the first hook is in a first position, the second latch is in a released position (held by a hook blocking portion of the first hook), the moving element is in a second undriven position, and the first latch is in an extended position according to a third configuration, in which case the release actuation portion (of the actuation element) has not been actuated by the user.

[0071] According to one preferred embodiment, when the user presses (hardly) the first hook, and in particular its actuating part, against the vehicle side bracket, for example starting from the installed position in which the release actuating part is not (yet) actuated, the second latch is moved to the locking position, the moving element is moved from the second non-actuated position to the first non-actuated position in which the first latch is (still) in the extended position according to the second arrangement, and the first hook is moved (by the actuating part being actuated by the vehicle side bracket) to a second position in which the two legs of the first hook engage with the periphery of the vehicle side bracket, thereby moving the nestable system to the locking position (see below).

[0072] According to one preferred embodiment, when the user activates, in particular progressively presses, for example the release actuator starting from the (current) locked position, the moving element is (initially) (again) moved from the first unactuated position to the second unactuated position, the second latch is (again) held in the released position by the hook blocking portion of the first latch, the first latch is (now) (still) in the extended position according to the third configuration, and the first hook is moved to the first position (by the pre-loaded first spring and / or first / second spring), whereby the telescoping system is (again) moved to the installed position.

[0073] According to the preferred / described embodiment, when the user activates, in particular gradually presses, the release actuator, for example starting from the installed position, the moving element is moved from the second non-driven position to the driven position, the second latch is (still) in the released position, the first latch is driven to the retracted position according to the first configuration, and the first hook is (still) in the first position, thereby moving the telescopic system to the adjusted position (see further below).

[0074] According to the preferred / described embodiment, when the user no longer activates the release actuator, for example from the adjustment position, and in particular releases the release actuator (gradually or suddenly), the telescoping system is (again) moved to the installation position.

[0075] In a further embodiment, the fixed part of the actuating element has a through hole or slot on its outside, in which a color indication is visible on the surface of the movable part to indicate the current position of the first hook depending on the position of the movable part relative to the fixed part.

[0076] The actuation element may be provided on (directly on) a surface of one of the first and second sections or at a distance from the first and second sections.

[0077] The nested system (as a whole) preferably comprises: - the first hook is in a first position, the second latch is in a release position, the moving element is in a drive position, the first latch is in a retracted position according to the first configuration, the actuation element is actuated (in particular the user actuates the release actuation, in particular (permanently) presses and / or keeps it pressed), so that the telescoping system and thus the child seat or the base for the child seat is not anchored to the vehicle seat, and so that the length of the telescoping system is freely adjustable (between a minimum length and a maximum length) in an adjustment position, in particular the adjustment positions already mentioned above, and / or - the first hook is in the second position, the second latch is in the locking position, the moving element is in the first non-driven position, the first latch is in the extended position according to the second configuration, the actuation element is not actuated (in particular the user does not actuate the release actuation, in particular does not (progressively) press and / or keep pressed), whereby the telescoping system and thus the child safety seat or the base for the child safety seat is connected to the vehicle seat, when the telescoping system is only able to reduce in length (in particular when a force acts on the first section or on the child safety seat or the base for the child safety seat, whereby the first section and the second section are brought towards each other) in the locking position, in particular the locking position already mentioned above, and / or - an installation position, in which the first hook is in the first position, the second latch is in the release position, the moving element is in the second, non-driven position, the first latch is in the extended position according to the third configuration, the actuation element is not actuated (in particular the user does not actuate the release actuation, in particular does not (progressively) press and / or keep pressed), in which the telescoping system and thus the child seat or the base for the child seat is not anchored to the vehicle seat, so that the length of the telescoping system can or cannot be varied to a more limited extent compared to the second configuration, in particular the installation positions already mentioned above, and / or - an intermediate position when the telescopic system has shortened from the locked position and the first latch has not yet reached the next recess (of the first section) (in particular when the first hook is in the second position, the second latch is in the locked position, the moving element is in the first non-driven position, the first latch is in the retracted position, the actuation element is not actuated (in particular when the user has not actuated the release actuation, in particular when not (gradually) pressing and / or keeping it pressed), and the telescopic system and thus the child seat or the base for the child seat are connected to the vehicle seat), in which the length of the telescopic system can increase somewhat (for example by at least 2 mm or at least 4 mm and / or at most 2 cm or at most 1 cm) until the first latch engages in the previous recess (of the first section), in particular when the first and second sections are pulled apart can be moved to.

[0078] As in the locked position, also in the intermediate position the length of the telescoping system may be reduced (especially if a force acts on the first section or on the child seat or on the base for the child seat, thereby pressing the first and second sections together). Allowing some movement in the other direction in the intermediate position facilitates the user to at least engage the previous recess, thereby improving ease of use and safety in particular.

[0079] Parts made of metal, particularly perforated parts, including for example the first hook and / or the first latch and / or the second latch, can have varying thicknesses, thereby having thinned areas that allow for smaller holes to be drilled, which can be formed from areas of normal thickness by applying high pressure (e.g., by hitting with a hammer of some kind).

[0080] The above-mentioned problem is also solved by a child car seat or a base for a child car seat, in particular comprising two nesting systems arranged side by side as described above, in particular compatible with Isofix anchors or anchors according to ISO standard 13216 or United Nations Economic Commission for Europe standard R145, for anchoring the child car seat or the base for a child car seat to a vehicle seat.

[0081] Furthermore, the above-mentioned problem is solved in particular by a method for fastening a child car seat or a base for a child car seat to a motor vehicle seat as described above, wherein the first section and the second section are longitudinally displaced relative to one another to adjust the length of the telescoping system, and the telescoping system is selectively placed in the first, third and / or second configurations, preferably (sequentially) in the first, third and second configurations. Further method features arise from the above and following description of the telescoping system or child car seat or base. In particular, functional features can be implemented as separate method steps (e.g., the movement from the third to the second configuration can be performed or initiated separately).

[0082] Furthermore, the above-mentioned problem is also solved in particular by a method for removing a child car seat or a base for a child car seat as described above from a motor vehicle seat, which method in particular follows or precedes the method described in the immediately preceding paragraph, and in which the telescoping system is moved from the second position to the third position or (optionally via the third position) from the second position to the first position. Further method features arise from the above and below description of the telescoping system or child car seat or base. In particular, functional features can be implemented as individual method steps (e.g. the movement from the second position to the third position can be specifically performed or initiated).

[0083] Further embodiments are set forth in the dependent claims.

[0084] In the following, the invention will be described with reference to exemplary embodiments which will be explained in more detail with reference to the drawings. [Brief explanation of the drawings]

[0085] [Figure 1a] 1 is a diagram of a child car seat with a nesting system according to the present invention; [Figure 1b] 1b shows the child car seat according to FIG. 1a on a base for a child car seat with a telescoping system; [Figure 1c] FIG. 1 shows a base for a child car seat with a nesting system. [Figure 2] 1 is a diagram of a base for a child car seat having a lower portion for being supported on the seating surface of a car seat. [Figure 3] 10 is a diagram of a second section of a telescoping system according to the present invention, with an actuation element disposed on the side of the second section having an unactuated release actuator. FIG. [Figure 4] FIG. 4 is a view similar to FIG. 3 with the release actuator actuated. [Figure 5] 4 corresponds to FIG. 3, but now showing the internal structure of the actuating element when it is not actuated. [Figure 6] 5 corresponds to FIG. 4, but now showing the internal structure of the actuating element being actuated. [Figure 7] FIG. 1 is a diagram of a nested system having a first section and a second section. [Figure 8] FIG. 1 is a diagram of a nested system with only half of the first section. [Figure 9] FIG. 10 is an exploded view of the second section of the nested system. [Figure 10] FIG. 1 is a diagram of the entire telescoping system with an enlarged view of various parts of the first bolt and moving elements. [Figure 11] FIG. 10 is a half view of a second section of a nested system having a first latch according to a first arrangement. [Figure 12] FIG. 10 is a half view of a second section of a nested system having a first latch according to a third arrangement. [Figure 13] FIG. 10 is a half view of a second section of a nested system having a first latch according to a second arrangement. [Figure 14] 10 is a diagram of an alternative embodiment of a nestable system according to the present invention, in which the moving element is longitudinally movable relative to the other components of the moving element and has a blocking release portion preloaded by a fifth spring. [Figure 15] FIG. 15 is a view of the telescoping system shown in FIG. 14 in a locked position. [Figure 16] 16 is a view of the nested system shown in FIG. 14 with the first latch raised compared to FIG. 15. [Figure 17] FIG. 15 is a diagram of the nested system shown in FIG. 14, with the first latch located exactly between the two recesses in the first section. [Figure 18] 17 is a view of the telescoping system shown in FIG. 14 with the moving element, excluding the blocking release, pushed towards the proximal end (of the second section), whereby the second latch is in the released position relative to FIG. 17. [Figure 19a]1 is a diagram of the interaction of the parts of the telescoping system in an adjusted position. [Figure 19b] FIG. 1 is a diagram of the interaction of the components of the telescoping system in the installed position. [Figure 19c] FIG. 10 illustrates the interaction of the parts of the telescoping system in the locked position. DETAILED DESCRIPTION OF THE INVENTION

[0086] In the following description of the figures, the same reference numbers are used for identical or identically acting parts.

[0087] FIG. 1a shows a child car seat 10 with a nesting system 100 according to the invention.

[0088] FIG. 1 b shows a child car seat 10 on a child car seat base 11 having a nesting system 100 .

[0089] FIG. 1 c shows a child seat base 11 with a nesting system 100 .

[0090] 2 shows a child car seat base 11 having a lower part 12 for resting on the seat surface of a vehicle seat and a rear part 13 facing the back of the vehicle seat. Two first sections 110 of the nesting system according to the invention are shown diagrammatically, which are integrally formed with the child car seat base 11. The two first sections 110 are flush at their bottoms with the lower part 12 of the child car seat base 11. They also do not protrude rearward beyond the rear part 13.

[0091] FIG. 3 shows the second section 120 of the telescoping system, which has proximal and distal ends 121, 122 formed as end caps. Also shown on the side of the second section 120 is an actuating element 230 having a fixed portion 231, a movable portion 232, and a release actuating portion 234. The fixed portion 231 has a through-hole (not numbered) on its exterior, within which a color marking on the surface of the movable portion 232 (not shown) can be seen to indicate the current position of the first hook 130, shown in this figure in a second position, depending on the position of the movable portion 232 relative to the fixed portion 231. The release actuating portion 234 is not actuated, and the movable portion 232 is in an initial position. The first hook 130 is located at the distal end 122 of the second section 120 and can be switched between a first position and a second position. In the second position, the first hook 130 includes a notch (not numbered) at the distal end 122 of the second section 120 .

[0092] In Figure 4, the same elements are shown as in Figure 3, but in contrast to the latter, the release actuator 234 has now been actuated and the movable part 232 is in the depressed position. The first hook 130 is in the first position, so that now only the actuator 134 is visible.

[0093] Figure 5 corresponds to Figure 3, and Figure 6 corresponds to Figure 4. However, in both cases the internal structure of the actuating element 230 can now be seen. It can be seen that the release actuating part 234 is mounted rotatably about an axis (not numbered). When this is actuated against the force of a spring (not shown), the end formed as a third latch (retaining device) pivots downwards, allowing the movable part 232 to be pressed towards the proximal end 121. The movable part 232 is also pressed against the force of a spring (not shown), as a result of which the first hook 130 is moved to the first position, as will be explained in more detail below.

[0094] 7 shows a telescoping system 100 according to the invention, which has a first section 110 and a second section 120. The first section 110 has on its underside a number of recesses 111, shown in this figure as through-holes. On the side facing the actuating element 230, not shown in this figure, the first section 110 also has lateral guide slots 112 through which extend a first pin 236 and a second pin 237, which are provided for connection to the actuating element 230. The telescoping system 100 according to the invention is in a maximum extension state.

[0095] 8 shows a telescoping system 100 according to the present invention, with only half of the first section 110 shown here for clarity. The telescoping system 100 according to the present invention is shown pulled back relatively far, and the first pin 236 can be seen to be rigidly connected to the second section 120. Additionally, the second section can now be seen to have an elongated hole 127 through which the second pin 237 extends.

[0096] 9 shows that second section 120 comprises first and second halves 120a, 120b, and end cap 120c. Additionally, first hook 130 is visible along with first / second spring 131, and moving element 160 is visible along with second latch 138, first pin 236, first latch 200, and elongated hole 127.

[0097] 10 again shows a complete representation of a nestable system 100 according to the present invention, including a first section 110 and a second section 120. In the first position shown, the first hook 130 can be seen supported by the first protrusion 123 of the second section. The second latch 138 is in the released position and is connected to the moving element 160. The third protrusion 125 connects the two halves 120a and 120b of the second section 120, making the second section 120 more stable. The third protrusion 125 of the second section 120, together with the gap 166 of the moving element 160, also forms the second guide 102 as a side effect.

[0098] Further details are visible in the enlarged view of portions of the first latch 200 and moving element 160 shown at the bottom of the figure. The first latch 200 has a blocking portion 201 that is wedge-shaped. As shown, the first engagement portion 202 cooperates with the latch blocking portion 162 to prevent the first latch 200 from moving from the extended position shown, where the blocking portion 201 engages with one of the recesses 111 in the first section 110, to the retracted position. Opposite the latch blocking portion 162, the moving element 160 has a support portion 165 by which the moving element 160 can be supported by the second section 120.

[0099] The second engagement portion 203 of the first latch 200 is intended to be located opposite the drive portion 161 of the moving element 160 and to cooperate with the latter to move the first latch 200 from the extended position to the retracted position. However, in the illustrated position of the moving element 160, the drive portion 161 and the second engagement portion 203 are spaced apart from each other.

[0100] Between the first engagement portion 202 and the second engagement portion 203 there is a free space 204 in which the latch blocking portion 162 is located when the moving element 160 is in the drive position. On the side of the blocking portion 201 facing the proximal end 121 there is a third engagement portion 208 intended to cooperate with the edge of the recess 111 in which the first latch 200 is engaged to push the first latch 200 into the retracted position.

[0101] The first latch 200 is pivotable about a second axis 206, to which it is mounted by a second bearing 207. Two third springs 205, one a torsion spring and the other a tension spring, pull the first latch 200 towards its extended position. The third springs 205, which are designed as torsion springs, are supported at one end by the first latch 200 and at the other end by the fourth protrusion 126 of the second section 120.

[0102] The third spring 205, which is designed as a tension spring, is supported at one end by the first latch 200 and at the other end by the second section 120. It can be seen that the support point of the third spring 205, which is designed as a tension spring, is thinner than the rest of the first latch 200. In the extended position shown, the first latch 200 is supported by the fourth protrusion 126.

[0103] 11 also shows the second section 120 of the nesting system 100 according to the present invention. A first hook 130 having a locking portion 135 is disposed at the distal end 122, and the first hook 130 is rotatably supported about a first axis 132 by a first bearing portion 133. A first / second spring 131 has a first end 131a connected to the first hook 130, specifically, generally above the first bearing portion 133, and a second end 131b connected to an arm of an L-shaped second latch 138.

[0104] The second latch 138 is movable together with a moving element 160 having, inter alia, a drive part 161 and a detection part 164. In the illustrated adjustment position of the telescoping system 100 according to the invention, the first hook 130 is in the first position (open), the second latch 138 is in the release position, the moving element 160 is in the drive position, the first latch 200 is in the retracted position (according to the first configuration), and the actuation element 230 (not shown) is actuated. Thus, the child car seat 10 connected to the telescoping system 100 or the child car seat base 11 connected to the telescoping system 100 is not tethered to the vehicle seat 1, and the length of the telescoping system 100 can be freely adjusted between a minimum length and a maximum length. The sensor 180 is shown diagrammatically.

[0105] Figure 12 shows the same elements as Figure 11, but the telescoping system 100 according to the present invention is now in the installed position. Furthermore, the first hook 130 is in the first position (open) and the second latch 138 is in the released position. However, the moving element 160 is now in the second unactuated position and the first latch 200 is in the extended position (according to the third configuration). The actuating element 230 (not shown) has not been actuated. The telescoping system 100 is no longer tethered to the vehicle seat 1, and the length of the telescoping system 100 cannot be changed because the latch blocking portion 162 of the moving element 160 blocks the first latch 200 at the first engagement portion 201, holding it in the extended position.

[0106] 11 and 12, but the telescoping system 100 according to the present invention is now in the locked position. The first hook 130 is now in the second position, the second latch 138 is in the locked position, and the moving element 160 is in the first, unactuated position. The first latch 200 is in the extended position (according to the second configuration), and the actuating element 230 (not shown) is not actuated. The telescoping system 100, and optionally the child car seat 10 or the child car seat base 11 connected to the telescoping system 100, are tethered to the vehicle seat 1, and the length of the telescoping system 100 cannot be increased, but can only be decreased, when a force acts on the first section 110 or the child car seat 10 or the child car seat base 11, respectively, driving the first section 110 and the second section 120 toward each other. It can be seen that the sensor 180 is now no longer facing the detection portion 164, and as a result, it is possible to distinguish between the locked and released positions of the second latch 138 (and therefore between the first and second positions of the first hook 130).

[0107] 14-18 show an alternative embodiment of a nestable system 100 according to the present invention. This embodiment essentially corresponds to the embodiment described above, but in this figure, the moving element 160 has a blocking release portion 167 that is longitudinally movable relative to the other components of the moving element 160 and is preloaded by a fifth spring 168 toward the proximal end 121 of the second section 120. The illustrated embodiment addresses the problem that, at least theoretically, the first latch 200 could become lodged precisely between the two recesses 111 of the first section 110 and then block the entire nestable system 100. It should be noted here that the first / second springs 131 and the fifth spring 168 are only shown diagrammatically in FIGS. 14-18.

[0108] FIG. 15 shows the telescoping system 100, as in FIG. 14, with the block release 167 and the fifth spring 168 not yet in any action compared to the versions illustrated above (FIGS. 1-13).

[0109] 16, the second latch 138 is still in a locked position relative to the first hook 130. Due to the force driving the first section 110 and the second section 120 toward each other, the first latch 200 has been lifted by the interaction between an edge of one of the recesses 111 and the third engagement portion 208.

[0110] 17 , when the first latch 200 becomes lodged precisely between the two recesses 111 of the first section 110 and a user attempts to move the second latch 138 from the locked position to the released position by actuating the actuation element 230 (not shown), thereby switching the first hook 130 from the second position to the first position, the latch blocking portion 162 may advance against the first engagement portion 202. Now, as shown in FIG. 18 , the moving element 160 (excluding the blocking release portion 167) can be pushed toward the proximal end 121 against the force of the fifth spring 168, thereby allowing the second latch 138 to still move to the released position.

[0111] Figures 19a-19c again show very diagrammatically the basic interaction of the components of the telescoping system 100 according to the present invention, in particular the second section 120, the first hook 130, the moving element 160 with the second latch 138 and the first latch 200. Figure 19a shows the adjusted position, Figure 19b shows the installed position and Figure 19c shows the locked position.

[0112] It should be noted here that all the above-mentioned components, in particular the details shown in the drawings, are claimed as essential to the invention both individually and in any combination, modifications of which will be familiar to those skilled in the art.

[0113] It is further pointed out that the aim is to achieve the widest possible scope of protection. In this respect, the disclosure contained in the claims can also be specified by the features described together with further features, even if these further features are not necessarily to be included. It is expressly pointed out that parentheses and the word "in particular" are intended to emphasize that a feature is optional in the respective context (which does not, on the contrary, mean that, without such specification, a feature should be considered mandatory in the corresponding context). The term "element" is preferably intended to indicate a respective coherent structure, which may be connected to at least one other structure or separated from all other structures (possibly to form a single part and / or an essentially immovable structural whole). [Explanation of symbols]

[0114] 1...car seat, 2...vehicle seat backrest, 3...vehicle seat surface, 4...bracket, 10...child seat, 11...child seat base, 12...lower part, 13...rear part, 100...nesting system, 101...first guide part, 102...second guide part, 110...first section, 111...recess, 112...(lateral) guide slot, 120...second section, 120a...first half part, 120b...second half, 120c...end cap, 121...proximal end, 122...distal end, 123...first protrusion, 124...second protrusion, 125...third protrusion, 126...fourth protrusion, 127...elongated hole, 130...first hook, 131...first / second spring, 131a...first end of first / second spring, 131b...second end of first / second spring, 132...first shaft, 133...first bearing portion, 134...operating portion, 135...locking portion, 135a...leg portion, 135b...leg portion, 136...engaging portion, 137...hook preventing portion, 138...second latch, 139...locking portion, 140...first contact portion of second latch, 160...moving element, 161...driving portion, 162...latch preventing portion, 163...second contact portion of moving element, 164...detecting portion, 165...supporting portion, 166...gap, 167...blocking release portion, 168...fifth Spring, 180...sensor, 200...first latch, 201...blocking portion, 202...first engaging portion, 203...second engaging portion, 204...free space, 205...third spring, 206...second shaft, 207...second bearing portion, 208...third engaging portion, 230...actuating element, 231...fixed portion, 232...movable portion, 233...retaining device, 234...release operating portion, 235...fourth spring, 236...first pin, 237...second pin

Claims

1. A telescoping system (100) for fastening a child car seat (10) and / or a base for a child car seat (11) to a vehicle seat (1), comprising: the telescoping system (100) comprises a first section (110) and a second section (120), the first section and the second section being longitudinally displaceable relative to one another to adjust the length of the telescoping system (100); A first latch (200) is anchored within or to the second section, and the nestable system (100) can be in at least a first configuration, a second configuration, and a third configuration, wherein in the first configuration, the length of the nestable system (100) is adjustable, in the second configuration, the length of the nestable system (100) is adjustable to a limited extent compared to the first configuration, and in the third configuration, the length of the nestable system (100) is adjustable to a further limited extent compared to the second configuration or is not adjustable.

2. The first section (110) is optionally removably anchored or can be anchored to the child car seat (10) or the base for the child car seat (11) and / or is at least partly formed integrally with the child car seat (10) or the base for the child car seat (11), and the second section (120) is preferably provided for removably anchoring to the vehicle seat (1) and has a proximal end (121) and a distal end (122), more preferably in the region of the distal end (122) of the second section (120). a first hook (130) provided in the seatbelt (100) that is suitable for engaging around a bracket (4) provided on the vehicle side, in particular an Isofix anchor or an anchor conforming to ISO standard 13216 or United Nations Economic Commission for Europe standard R145, in order to connect the telescoping system (100) to the vehicle seat (1), the first hook (130) being switchable between a first position in which the telescoping system (100) is not connected to the vehicle seat (1) and a second position in which the telescoping system (100) is connected to the vehicle seat (1). The nested system (100) of claim 1.

3. the second section (120) is at least 4 cm, preferably at least 8 cm long, and / or at most 40 cm long, preferably at most 30 cm long, and / or the first section (110) is at most 40 cm long and / or at least half the length of the second section (120), A nested system (100) according to one of the preceding claims.

4. characterized in that the minimum length of the telescoping system (100) and the maximum length of the telescoping system (100) differ by at least 4 cm, preferably at least 8 cm and / or by at most 30 cm, preferably at most 20 cm; A nested system (100) according to one of the preceding claims.

5. a second latch (138) is provided in / on the second section (120), and is adjustable between a locked position in which the second latch (138) holds the first hook (130) in the second position and / or a released position in which the second latch (138) does not hold the first hook (130) in the second position; A nested system (100) according to one of the preceding claims.

6. the first section (110) has a plurality of recesses (111) spaced apart from one another in the longitudinal direction, at least two, preferably 4 to 15, A nested system (100) according to one of the preceding claims.

7. The first latch (200) and / or a blocking portion (201) that can be selectively engaged or disengaged with a mating structure, in particular one of the recesses (111) of the first section (110) according to the immediately preceding claim, for adjusting the second section (120) relative to the first section (110) in relation to the longitudinal length of the telescopic system (100), the blocking portion (201) preferably being capable of assuming at least one retracted position corresponding to the first configuration and / or the blocking portion (201) being capable of assuming an extended position corresponding to the second configuration and / or the third configuration; a first engagement portion (202) for being held in said extended position according to said third configuration; and / or a second engagement portion (203) for being held in the retracted position according to the first configuration; and / or a third engagement portion (208), in particular as part of the blocking portion (201), adapted to be contacted by a mating structure, in particular an edge of a recess (111) of the first section (110), according to the second arrangement when a force presses the first section and the second section (120) towards each other to reduce the length of the telescoping system (100), the third engagement portion (208) preferably being oblique to the longitudinal direction, whereby the first latch (200) is pressed towards a retracted position by contact of the third engagement portion (208) and the associated force; characterized in that A nested system (100) according to one of the preceding claims.

8. A moving element (160) is provided in and / or on the second section (120) and is movably arranged, preferably displaceable between at least a first non-driven position, a second non-driven position and a driven position, in particular displaceable in the longitudinal direction, and the moving element (160) comprises: a drive portion (161) suitable for selectively interacting with the second engagement portion (203) of the first latch (200) to move the first latch (200) from the extended position to the retracted position; and / or a latch blocking portion (162) adapted to selectively interact with the first engagement portion (202) of the first latch (200) to prevent the first latch (200) from being moved from the extended position to the retracted position; and / or The moving element (160), optionally moved by an actuating element (230), can release the second latch (138) and is operatively connected to the second latch (138) to toggle between the released position and / or the locked position. characterized in that A nested system (100) according to one of the preceding claims.

9. a first pin (236) in particular fixedly connected to the second section (120) and / or a second pin (237) in particular fixedly connected to the moving element (160), the first pin and the second pin (237) being provided for connecting to an actuating element / the actuating element (230); The first section (110) preferably has a lateral guide slot (112) extending in the longitudinal direction, preferably over at least 50% of the length of the first section (110), and more preferably both the first pin (236) and the second pin (237) extend through the slot (112). characterized in that A nested system (100) according to one of the preceding claims.

10. the second section (120) has an elongated hole (127) that overlaps a portion of the lateral guide slot (112) of the first section (110) and guides movement of the second pin (237) in the longitudinal direction toward or away from the first pin (236); A nested system (100) according to one of the preceding claims.

11. an actuating element / said actuating element (230) is provided in particular to be actuated, preferably manually, by a user, characterized in that a fixed part (231) of said actuating element (230) is in particular fixedly connected to said second section (120) by a first pin / said first pin (236), a movable part (232) of said actuating element (230) is operatively connected to said moving element (160) by a second pin (237), is movable relative to said fixed part (231) and can be blocked by a holding device (233), in particular a third latch, and a release actuating part (234) is provided for releasing said holding device (233), A nested system (100) according to one of the preceding claims.

12. The nested system (100) comprises: an adjustment position in which the first hook (130) is in the first position, the second latch (138) is in the release position, the moving element (160) is in the drive position, the first latch (200) is in the retracted position according to the first configuration, and the actuation element (230) is actuated, whereby the telescoping system (100) and thus the child seat (10) or the child seat base (11) is not anchored to the vehicle seat (1), so that the length of the telescoping system (100) is adjustable; and / or a locked position in which the first hook (130) is in the second position, the second latch (138) is in the locked position, the moving element (160) is in the first non-driven position, the first latch (200) is in the extended position according to the second configuration, and the actuating element (230) is not actuated, whereby the telescoping system (100) and thus the child seat (10) or the child seat base (11) is anchored to the vehicle seat (1), so that the telescoping system (100) is only able to reduce its length; and / or an installation position in which the first hook (130) is in the first position, the second latch (138) is in the released position, the moving element (160) is in the second undriven position, the first latch (200) is in the extended position according to the third configuration, and the actuation element (230) is not actuated, whereby the telescoping system (100) and thus the child seat (10) or the child seat base (11) is not anchored to the vehicle seat (1), so that the length of the telescoping system (100) can be varied or cannot be varied to a more limited extent compared to the second configuration; and / or an intermediate position when the telescoping system (100) is shortened from the locked position and the first latch (200) has not yet reached the next recess (111), and the length of the telescoping system (100) can be increased somewhat until the first latch (200) engages in the previous recess (111), in particular when the first section (110) and the second section (120) are pulled apart. characterized in that it can be moved A nested system (100) according to one of the preceding claims.

13. 1. A child car seat (10) or a base for a child car seat (11) comprising two nesting systems (100) arranged side by side according to one of the preceding claims, in particular compatible with Isofix anchors or anchors according to ISO standard 13216 or United Nations Economic Commission for Europe standard R145, for anchoring said child car seat (10) or said base for a child car seat (11) to a motor vehicle seat (1).

14. 10. A method for fastening a child car seat (10) or a base for a child car seat (11) according to the preceding claim to a motor vehicle seat (1), wherein the first section (110) and the second section (120) are displaced relative to each other in the longitudinal direction to adjust the length of the telescoping system (100), and wherein the telescoping system (100) is selectively placed in the first, third and / or second configurations, preferably in the first, third and second configurations.

15. 14. A method for removing a child car seat (10) or a base for a child car seat (11) according to claim 13 from a motor vehicle seat (1), wherein the telescoping system (100) can be moved from the second position to the third position or from the second position to the first position.

Images