DE202022105669U1 - Fastening system for child seats - Google Patents

Abstract

Telescopic system (100) for fastening a child seat (10) and/or a base for a child seat (11) to a motor vehicle seat (1), the telescopic system (100) comprising a first section (110) and a second section (120), the first and second sections being displaceable relative to one another in a longitudinal direction to adjust the length of the telescopic system (100), a first latch (200) being fitted in or on the second section, the telescopic system being able to be brought into at least a first, second and third configuration , wherein in the first configuration the adjustment of the length of the telescopic system (100) is made possible, in the second configuration the adjustment of the length of the telescopic system (100) is restricted compared to the first configuration and in the third configuration the adjustment of the length of the telescopic system (100) is more restricted or not possible compared to the second configuration.

Description

The invention relates to a telescopic system for attaching a child seat and/or a base for a child seat to a motor vehicle seat.

The person skilled in the art understands a child seat to be a restraint system for children provided for transporting a child in a vehicle, preferably a motor vehicle.

In this context, it should be noted that within the scope of this invention, the term “child seat” is to be understood as a generic term for (classic) child seats, infant carriers, booster seats, booster seats, etc. Thus, within the scope of this invention, features provided for a child seat can in principle also be applied to an infant carrier and vice versa, as long as nothing to the contrary is mentioned. The same applies to the term "child", which is also to be understood as a generic term for children and babies as well as small children.

It should be noted that within the scope of this invention, the term “child seat” is to be understood as a generic term for (classic) child seats, infant carriers, booster seats, booster seats, etc. For example, the child seat of this invention can be a (classic) child seat (for larger children, e.g. group I/II and/or III child seat) which has a backrest structurally separated from a seating area, the inclination of which may be opposite the seating area can be varied. The structural delimitation can be formed, for example, by a kink or the like. In general, however (unless otherwise specified in the specific context), a child seat is always to be understood as an abbreviation for "child seat, for example baby seat, booster seat and/or booster seat" or, in the context of this invention, are intended for a (classic) child seat Characteristics can in principle also be applied, for example, to an infant carrier, a booster seat and/or a booster seat and vice versa (unless otherwise stated). The same applies to the term "child", which is also to be understood as a generic term for children and babies as well as small children. So-called “baby shells” often include (only) a one-piece shell for accommodating the baby or child and can include their own belt system, possibly a headrest and possibly other components. Instead of a (structurally distinct) backrest, such "infant seats" have a back section that connects to a "seating area" in which the child's buttocks can be accommodated.

The person skilled in the art understands the “base for a child seat” to be in particular a base on which a child seat can be attached in a detachable or non-detachable manner.

Child seats, infant carriers, booster seats, etc., which can be attached to a motor vehicle seat, have been known for some time. Such child seats, infant carriers, booster seats etc. serve as seating for children, babies and small children and offer them increased protection, particularly in the event of an accident and/or emergency braking. Such child seats can be fastened with the belt system of the car or by means of Isofix anchorage. Such an attachment secures the child seat in the event of an accident on the motor vehicle seat, so that it is held on the motor vehicle seat and not thrown forward, especially in the event of a rear-end collision (impact) and/or emergency braking.

Since such child seats often have to be changed between different vehicles, in particular motor vehicles, or installed and removed, it is of particular importance that the detachable anchoring of a child seat enables user-friendly handling. Furthermore, however, the easier handling should not be at the expense of the safety of the child in road traffic or in the event of an accident.

The attachment of the child seat to the vehicle seat must therefore be as stable as possible. At the same time, however, it is also desirable if the attachment allows a certain adjustability in order to be able to be optimally adapted to different motor vehicle seats.

An adjustable telescopic system for attaching a child restraint system to a motor vehicle seat is, for example, from EP 3 600 954 B1 known. However, the fastening system disclosed there consists of a large number of different individual parts, as a result of which the construction is considered in need of improvement in terms of production costs and the susceptibility to errors during use.

It is therefore the object of the present invention to propose a telescopic system for attaching a child seat and/or a base for a child seat to a motor vehicle seat, which meets the requirements described above with regard to stability, user-friendliness, safety and universal applicability as cost-effectively as possible and with little error-proneness.

This object is achieved in particular by the features of claim 1.

In particular, the object is achieved by a telescopic system for attaching a child seat and/or a base for a child seat to a motor vehicle seat, the telescopic system comprises a first section and a second section, with the first and second sections being displaceable relative to one another (in a longitudinal direction) in order to adjust the length of the telescope system (the sections being guided together via at least one first guide, with preferably one of the first section and/or second section is guided directly or indirectly in the longitudinal direction by at least one first guide on the other of the first section and second section), with a first latch being attached in or on the second section, with the telescopic system being able to be brought into at least a first, second and third configuration , wherein in the first configuration the adjustment of the length of the telescope system is allowed, in the second configuration the adjustment of the length of the telescope system is limited compared to the first configuration and in the third configuration the adjustment of the length of the telescope system is compared to the second configuration is further restricted or (at least essentially) not possible.

One idea of the invention is that, in contrast to the prior art mentioned above, the length of the telescopic system is advantageously adjusted with only one bolt, namely the first bolt, according to the configurations mentioned above. As a result, the telescopic system of the present invention is characterized by structural simplicity, while at the same time there are no restrictions in terms of functionality compared to the prior art (with two bolts).

Unless expressly stated otherwise, the terms "first", "second" etc., e.g. first hook or second spring, serve to distinguish different elements from one another. The presence of a first spring or a second spring therefore does not imply that more than one spring must necessarily be present.

The first and second sections can be displaced in relation to one another, this being understood in particular in such a way that the first section and second section can be moved relative to one another (in particular translationally, preferably in the longitudinal direction).

Furthermore, the telescopic system can have a transfer element (more detailed description below), which is suitable for driving the first bolt to be transferred from its extended position to its retracted position.

The first section is preferably releasably attached or attachable to the child seat or the base for the child seat, and/or is integrally formed at least in sections with the child seat or the base for the child seat, with the second section preferably being formed for releasable attachment a motor vehicle seat (where the motor vehicle seat has in particular a seat surface and a backrest) and has a proximal end and a distal end, wherein in the region of the distal end of the second section preferably at least one or exactly one first hook is provided which is suitable , to grip around a bracket provided on the vehicle, in particular an Isofix anchorage or an anchorage according to the ISO 13216 standard or UN ECE R 145, in order to couple the telescopic system to the motor vehicle seat, the first hook being switchable between a first position in which he does not couple the telescopic system to the motor vehicle seat, and a second position in which it couples the telescopic system to the motor vehicle seat.

The motor vehicle seat can (at least approximately) have at least one, preferably exactly two, brackets in the transition area between seat surface and backrest, which (each) can be encompassed by the first hook of the telescopic system. The child seat or the base for a child seat can have an underside that is intended to rest on the seat surface of the motor vehicle seat. The child seat or the base for a child seat can have a rear side which is intended to face the backrest of the motor vehicle seat and possibly rest against it.

Portions of the telescoping system may be flush with the underside and/or the back of the child seat or child seat base.

In embodiments, the first and/or second section have (at least essentially) a cross section that is at least partially square and/or rectangular.

The first and/or second section are preferably at least essentially in the form of a profile (or as profile(s)), possibly hollow and/or tubular.

According to the embodiment, the first and/or second section have a height (viewed over a maximum length) and/or a diameter (viewed over a maximum length) of less than or equal to 5 cm, preferably 2 cm-3.5 cm.

According to the embodiment, the first and/or second section has a width (when viewed over a maximum length) of less than or equal to 3 cm, preferably 1.0 cm-2.0 cm.

The first section can enclose or enclose the second section in sections.

The first section is preferably at most 40 cm long and/or at least half as long as the second section and/or at least 2 cm, preferably at least 4 cm long.

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

In embodiments, the second section has a number of preferably inwardly directed projections. Each of the protrusions may be formed over an entire width (transverse to the longitudinal direction, particularly in the left-right direction) or over a part of the width of the second portion. Each of the projections can, for example, be designed as a bulge and/or be designed as a bolt.

The second portion preferably includes a first projection for supporting the first hook in its first position.

In addition, the second section preferably has a second projection, possibly a plurality of second projections, for guiding a bar and/or at least a third projection for guiding the transfer element. At least one optional fourth projection of the second section can be used to support the first latch in its extended position.

The first hook is preferably biased towards its first position, in particular by a first spring. In particular, when the first hook is biased towards the first position, a second latch (see below) can be provided in or on the second section of the telescopic system. The first hook may be rotatable about a first axis, which is preferably fixed to the second portion. Furthermore, the first hook can have a first axle section or a first bearing section. The first hook can also have a locking section that is suitable for embracing the bracket on the vehicle side and/or can be C-shaped or U-shaped.

In particular, the locking section can have two legs located opposite one another, it being possible for one of the legs to be adjacent to an actuating section of the first hook. The first spring can be attached to one/the first axle on the first hook, in particular held and/or mounted, and/or the first spring can be designed as a torsion spring.

Alternatively, the first spring can be fastened, in particular held 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. In principle, other types of springs are also conceivable.

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 and second springs (see below) can also be identical and formed by a single (first/second) spring simultaneously biasing the first hook to the first position and biasing the second latch towards a locking position (see below) . This is preferably done in that a first end of the first/second spring is supported on the first hook and a second end of the first/second spring is supported on the second latch (or possibly on the transfer element).

Furthermore, a force acting on the operating section in the longitudinal direction (e.g. as a result of pressing against the vehicle-side bracket), namely from the distal end of the second section towards the proximal end of the second section, can drive the first hook to move from the first position to the to be transferred to second position.

The telescopic system can preferably be completely lowered into the child seat or into the base for a child seat. The first section can be mounted on the child seat or the base for a child seat in such a way that it is completely recessed or at least partially flush with the child seat or the base for a child seat. The second section, in turn, can be adjusted in at least one position relative to the first section in such a way that it is also completely recessed or at least partially flush with the child seat or the base for a child seat.

The minimum length of the telescope system and the maximum length of the telescope system can differ by at least 4 cm, preferably at least 8 cm and/or at most 30 cm, preferably at most 20 cm.

A maximum projection of the telescopic system over the child seat or the base of the child seat can be at least 4 cm, preferably at least 8 cm, and/or at most 30 cm, preferably at most 20 cm.

Preferably, in and/or on the second section, a second bolt, in particular the one already described above, is provided, which between a locking position, in particular the one already described above, in which the second latch holds the first hook in its second position and/or is adjustable to a release position in which the second latch does not hold the first hook in its second position.

The second locking bar can be pretensioned towards the locking position, in particular by a second spring, in particular the second spring already described above, in particular 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 may be constructed and arranged such that the first hook holds the second latch in the release position by a hook blocking portion when the first hook is in its first position and that, further, a transition of the first hook into its second position (e.g. by actuation of the actuation section) allows the second bolt to be transferred into its locking position, in particular driven by the second spring or the first/second spring.

The first hook may have an engagement portion into which the second latch engages with a locking portion when the first hook is in its second position and the second latch is in its locking position. The second bar can have a first contact section for contact with the transfer element (see below). The second latch can also be L-shaped, in particular such that the end of one arm of the L-shape forms the locking section and/or that the other arm of the L-shape forms (in whole or in part) the contact section. The second bolt can be made of metal (at least 50% by weight or at least 80% by weight), in particular steel. The second locking bar can be switched between the locking position and the release position in a translatory manner (alternatively: in a rotary manner or with a translatory and rotary component).

Preferably, the first portion has a plurality of at least two, preferably at least 4 and/or at most 15, preferably at most 10 (e.g. 8 or 9 or 10) longitudinally spaced recesses each suitable for receiving a locking portion of the first latch are. The distance between two recesses can be in the range of 1 cm - 2 cm, e.g. 15 mm, and/or at least 3% and/or at most 50% of a maximum extension. The recesses can in particular be through-holes.

Preferably, the first latch of the telescopic system has a locking section which can be selectively engaged or disengaged with a counter-structure, in particular with one of the recesses of the first section, in order to keep the second section relative to the first section in terms of the length of the telescopic system (in the longitudinal direction). preferably at least one retracted position (accompanied by the retracted position of the first latch) corresponding to the first configuration and/or wherein the locking section has an extended position (accompanied by the extended position of the first latch) corresponding to the second and/or or the third configuration. The blocking section is in particular wedge-shaped, at least in sections.

Additionally or alternatively, the first latch preferably has a first action portion to be held in the extended position according to the third configuration. The first acting portion may be adapted to cooperate with a latch blocking portion of the transfer member (see below) and hold the first latch in the extended position when the transfer member is in a second non-driven position (see below).

Additionally or alternatively, the first latch preferably has a second action portion to be held in the retracted position according to the first configuration. The second acting portion may be adapted to interact with a drive portion of the transfer element such that the first latch is driven to the retracted position when the transfer element is transferred to a drive position (see below).

A free space can be provided adjacent to the first effective portion (in particular as a recess between the first effective portion and the second effective portion), such that the bolt blocking portion faces the free space when the transfer element is in the drive position, so that the bolt blocking portion of the transfer element (see below ) does not block switching of the first bolt to the retracted position.

The first latch can be biased towards the extended position, in particular by at least a third spring. The first latch may also be rotatable about a second axis, which is preferably stationary with respect to the second section, and to this end may have a second axis section or a second bearing section. The third spring (or at least one third of possibly several third springs) can be fastened, in particular held, on the second axis on the first latch and/or stored, and/or can be designed as a torsion spring.

Alternatively or additionally (in particular if several third springs are provided), the third spring (or at least one third of possibly several third springs) can also be fastened, in particular held and/or mounted, on the first bar at a distance from the second axis, and /or be designed as a tension spring. Other types of springs are also conceivable, in particular two third springs (redundant) can also be provided.

Additionally or alternatively, the first bolt preferably has a third action section, in particular as a component of the blocking section, which, according to the second configuration, can be suitable for being contacted by an edge of a (respective, in particular above) counter-structure, in particular a recess of the first section, when a force urges the first and second sections towards one another to reduce the length of the telescopic system, the third action section is preferably oblique (inclined) with respect to the longitudinal direction, so that the first latch is caused by the contacting of the third action section and the concomitant Force is pushed towards the retracted position.

In the extended position of the first bolt, a side of the blocking section opposite the third action section can be arranged at least essentially perpendicular to the longitudinal direction (in particular enclosing an angle of 80° to 100° with the longitudinal direction). Alternatively or additionally, in the extended position of the first bolt, a side of the blocking section forming the third effective section can enclose an angle in the range of 35° to 55°, preferably 45°, with the longitudinal direction.

The telescopic system preferably has a transfer element, in particular the transfer element already described above, which can be moved, preferably displaceably, in particular longitudinally displaceably (with or without a rotary component) between at least a first non-drive position, a second non-drive position and a drive position in and/or on the second Section is arranged.

The transfer element preferably has a drive portion adapted to selectively interact with the second acting portion of the first latch to move the same from the deployed position to the retracted position. The drive section can be formed by a surface which is formed at least essentially in such a way that the longitudinal direction forms its surface normal.

Additionally or alternatively, the transfer element preferably comprises a latch blocking portion adapted to selectively cooperate with the first action portion of the first latch to prevent it from being transferred from the deployed position to the retracted position. The bolt blocking portion may have a blocking surface which is straight in the longitudinal direction or inclined thereto by at least 5° and/or at most 30°, preferably at most 20°. If the bolt blocking portion is inclined, then preferably such that a transition of the transfer element from the second non-drive position (in which the bolt blocking portion blocks a transition of the first bolt to the retracted position) to the first non-drive position (which accompanies the locking position of the second bolt) facilitates is or is also possible when a force urges the first latch towards the retracted position.

The first bolt and transfer element are preferably coordinated with one another in such a way that a (not predominant) proportion of a force for transferring the first bolt from the extended position to the retracted position can be transmitted through the first action section to the bolt blocking section in order to move the transfer element out of the second urge the non-drive position to the first non-drive position.

The first bar is preferably designed in one piece, possibly monolithically.

The transfer element can be biased, in particular by the second spring, towards the first non-drive position in which the lock blocking portion does not prevent the first lock from being transferred from the extended position to the retracted position and in which the drive portion does not engage the first lock cooperates to convert it from the extended position to the retracted position. In the first non-drive position, the adjustment of the length of the telescope system can be permitted or made possible to a limited extent. The transfer member and the second latch may be constructed and arranged such that the second latch is in the locked position when the transfer member is in the first non-drive position. In one embodiment, the transfer element comprises a second contact section in order to bear against the first contact section of the second bar.

Additionally or alternatively, the transfer element is preferably operatively connected to the second bolt, such that a movement of the transfer element, possibly by means of an actuating element (of the telescopic system), the second bolt to Switching between the release position and / or the locking position can release or releases. In particular, a movement of the transfer element by means of the actuating element can transfer the second bolt from the locking position to the release position.

The transfer 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 bar and the transfer element can be firmly connected to one another, e.g. by fastening means and/or a section of the second bar, in particular the first contact section, can be overmoulded.

If, according to the embodiment, the second bar (at least 50% by weight or at least 80% by weight) is made of metal, in particular steel, and the transfer element (at least 50% by weight or at least 80% by weight) is made of plastic , on the one hand a high level of stability can be achieved in a relevant area and on the other hand weight and/or costs can be saved.

In an alternative embodiment, the second bar and transfer element can be monolithic.

In general, the first hook, the first bar and/or the second bar (at least 50% by weight or at least 80% by weight) can be made of metal, in particular steel.

The transfer element can have a second guide between the second section and the transfer element, specifically e.g. by means of a cut-out, possibly a guide groove or slot and a third projection, possibly a guide pin or bolt.

In a further embodiment, the transfer element has an unblocking section which can be moved in the longitudinal direction relative to the other components of the transfer element and which is pretensioned with a fifth spring in the direction of the proximal end of the second section. This embodiment addresses the problem that it is at least theoretically conceivable that the first locking bar comes to a standstill exactly between two recesses of the first section and can then block the entire telescope system. If the first bolt comes to a standstill exactly between two recesses of the first section and a user attempts to move the second bolt from its locking position to the release position by actuating the actuating element, in order to prevent the first hook from switching from the second position to the first position to allow, the bolt blocking portion of the transfer element can run against the first acting portion of the first bolt. According to this embodiment, however, with the exception of the deblocking section, the transfer element can be pushed in the direction of the proximal end against the force of the fifth spring, so that the second latch can still reach the release position and the first hook can reach the first position, thereby blocking the telescope system is prevented.

In a further embodiment, the transfer element can have a detection section which is suitable for being detected by, for example, a sensor for determining the position of the transfer element. Accordingly, a sensor can be provided in the second section, for example, which is suitable for preferably detecting the position of the transfer element. In particular, whether the transfer element is in the first non-drive position and the first hook is in its second position (where the telescopic system is coupled to the motor vehicle seat), so that it can be recognized whether there is a child seat connected to the telescopic system or a base connected to the telescopic system for a child seat is in a state of use. Detection section and sensor are preferably adjacent to each other. Furthermore, the detection section and the sensor may preferably be arranged between the first bar and the proximal end of the second section, or they may be arranged between the first bar and the first hook.

The transfer element is preferably operatively connected to the actuating element (of the telescope system) for actuation by a user.

Preferably, the transfer element has support sections that are in direct contact with the second section in order to support the transfer element on the second section and, if necessary, to enable the transfer element to slide along the second section. The support sections can in particular be designed as projections, it being possible for a support section to be provided preferably at the level of the bolt blocking section opposite the blocking surface.

Furthermore, the telescope system preferably has a first pin, which is, in particular, firmly connected to the second section and/or a second pin, which is, in particular, firmly connected to the transfer element, the first and second pins preferably being used for connection are provided with a/the actuating element, the first section preferably having a lateral guide slot which extends in the longitudinal direction, preferably over at least 50% the length of the first section, more preferably with both the first pin and the second pin extending therethrough. The minimum and maximum length of the telescopic system can be set using the guide slot on the side.

Preferably, the second portion has an elongated hole which overlaps with a portion of the lateral guide slot of the first portion and guides longitudinal movement of the second pin towards or away from the first pin.

An actuating element, in particular the one already described above, is preferably provided, in particular for preferably (indirect or direct) manual operation (for setting the first, second and third configuration) by the user. A stationary section of the actuating element is preferably connected via a/the first pin, in particular fixedly, to the second section, and a movable section of the actuating element is preferably operatively connected via a/the second pin to the transfer element and/or movable relative to the stationary section. More preferably, the actuating element or the movable section thereof can be blocked by a holding device, in particular a third bolt, it being possible for a release actuation to be provided in order to release the holding device. The actuating element, in particular its release actuation, can comprise at least one button and/or at least one button and/or at least one slide and/or at least one operating lever.

The movable section of the actuating element can preferably be moved relative to the fixed section (and thus also to the second section), in particular against a force of a fourth spring.

The telescoping system preferably has an installation position (see below) with the first hook in the first position, the second latch in the release position (held by the hook blocking portion of the first hook), the transfer member in the second non-drive position, and the first latch are in the deployed position according to the third configuration with the release actuation (of the actuator) not actuated by the user.

In the event that, according to a preferred embodiment, the user, for example starting from the installation position, with the release actuation not (still) actuated, presses the first hook, in particular its actuation section, (firmly) (on) to the vehicle-side bracket, the second latch moved to the locking position and the transfer member from the second to the first non-driven position, with the first latch (still) in the extended position according to the second configuration, and the first hook (by actuation of the operating portion by the vehicle-side bracket) is transferred to the second position, with the two legs of the first hook gripping the bracket on the vehicle side, so that the telescopic system is transferred to a locking position (see below).

In the event that, according to one/the preferred embodiment, the user, for example, actuates the release actuation starting from the locking position (now), in particular increasingly presses it, the transfer element is (initially) transferred from the first (again) to the second non-drive position and the second latch held (again) in the release position by the hook blocking portion of the first latch, with the first latch (now) in the extended position according to the third configuration, and with the first hook in the first position (by the biased first and / or first / second spring) is brought, so that the telescope system (again) is converted into the installation position.

In the event that, according to one/the preferred embodiment, the user actuates, for example, the release actuation starting from the installation position, in particular increasingly presses it, the transfer element is transferred from the second non-drive position to the drive position, with the second latch (still) being in the release position and wherein the first latch is driven to the retracted position according to the first configuration with the first hook (still) being in the first position such that the telescoping system is translated to a reclined position (see below).

In the event that, according to one/the preferred embodiment, the user no longer actuates the release actuation starting from the adjustment position, in particular releases the release actuation (slowly or abruptly), the telescopic system is (again) transferred to the installation position.

In a further embodiment, the fixed portion of the actuating element has a through hole or slot on its outer side, in which color markings applied to the movable portion can be seen depending on the position of the movable portion relative to the fixed portion to show the current position of the first hook.

The actuator may be provided (proximately) on one of the first and second sections or remotely from the first and second sections.

• • eine Verstellstellung, insbesondere die weiter oben bereits beschriebene, in welcher der erste Haken in der ersten Stellung, der zweite Riegel in der Freigabeposition und das Transferelement in der Antriebsposition sind, wobei der erste Riegel gemäß der ersten Konfiguration in der zurückgezogenen Position ist und das Betätigungselement betätigt ist (insbesondere der Nutzer die Freigabebetätigung betätigt, insbesondere (dauerhaft) drückt und/oder gedrückt hält), wobei das Teleskopsystem und damit der Kindersitz bzw. die Basis für einen Kindersitz nicht am Kraftfahrzeugsitz befestigt ist, sodass die Länge des Teleskopsystems (frei) einstellbar (zwischen der minimalen und maximalen Länge) ist, und/oder
• • eine Verriegelungsstellung, insbesondere die weiter oben bereits beschriebene, in welcher der erste Haken in der zweiten Stellung, der zweite Riegel in der Verriegelungsposition und das Transferelement in der ersten Nichtantriebsposition sind, wobei der erste Riegel gemäß der zweiten Konfiguration in der ausgefahrenen Position ist und das Betätigungselement nicht betätigt ist (insbesondere der Nutzer die Freigabebetätigung nicht betätigt, insbesondere nicht (zunehmend) drückt und/oder gedrückt hält), sodass das Teleskopsystem und damit der Kindersitz bzw. die Basis für einen Kindersitz am Kraftfahrzeugsitz befestigt ist, wobei die Länge des Teleskopsystems ausschließlich reduzierbar ist (wenn insbesondere eine Kraft auf den ersten Abschnitt bzw. auf den Kindersitz bzw. die Basis für einen Kindersitz wirkt, die ersten und zweiten Abschnitt zueinander drängt), und/oder
• • eine Installationsstellung, insbesondere die weiter oben bereits beschriebene, in welcher der erste Haken in der ersten Stellung, der zweite Riegel in der Freigabeposition und das Transferelement in der zweiten Nichtantriebsposition sind, wobei der erste Riegel gemäß der dritten Konfiguration in der ausgefahrenen Position ist und das Betätigungselement nicht betätigt ist (insbesondere der Nutzer die Freigabebetätigung nicht betätigt, insbesondere nicht (zunehmend) drückt und/oder gedrückt hält), wobei das Teleskopsystem und damit der Kindersitz bzw. die Basis für einen Kindersitz nicht am Kraftfahrzeugsitz befestigt ist, sodass die Länge des Teleskopsystems im Vergleich zur zweiten Konfiguration weiter eingeschränkt veränderbar ist oder nicht veränderbar ist, und/oder
• • eine Zwischenstellung, wenn das Teleskopsystem aus der Verriegelungsstellung heraus verkürzt wird und der erste Riegel noch nicht die nächste Ausnehmung (des ersten Abschnitts) erreicht hat (wobei insbesondere erster Haken in der zweiten Stellung, zweiter Riegel in der Verriegelungsposition, Transferelement in der ersten Nichtantriebsposition und erster Riegel in der zurückgezogenen Position sind; das Betätigungselement nicht betätigt ist (insbesondere der Nutzer die Freigabebetätigung vorzugsweise nicht betätigt, insbesondere nicht (zunehmend) drückt und/oder gedrückt hält); und das Teleskopsystem und somit der Kindersitz bzw. die Basis für einen Kindersitz am Kraftfahrzeugsitz befestigt ist), wobei die Länge des Teleskopsystems geringfügig (beispielsweise um mindestens 2 mm oder mindenstens 4 mmm und/oder höchstens 2 cm oder höchsten 1 cm) vergrößerbar ist, insbesondere bis der erste Riegel in die vorherige Ausnehmung (des ersten Abschnitts) eingreift, wenn der erste Abschnitt und der zweite Abschnitt auseinandergezogen werden.

The telescopic system (as a whole) can preferably be brought into the following positions:

• • an adjustment position, in particular that already described above, in which the first hook is in the first position, the second latch is in the release position and the transfer element is in the drive position, the first latch being in the retracted position according to the first configuration and that actuating element is actuated (in particular the user actuates the release actuation, in particular (permanently) presses and/or keeps it pressed), with the telescopic system and thus the child seat or the base for a child seat not being attached to the motor vehicle seat, so that the length of the telescopic system (freely ) is adjustable (between the minimum and maximum length), and/or
• • a locking position, in particular that already described above, in which the first hook is in the second position, the second bolt is in the locking position and the transfer element is in the first non-driven position, the first bolt being in the extended position according to the second configuration and the actuating element is not actuated (in particular the user does not actuate the release actuation, in particular not (increasingly) presses and/or keeps it pressed), so that the telescopic system and thus the child seat or the base for a child seat are attached to the motor vehicle seat, with the length of the Telescopic system is exclusively reducible (if in particular a force acts on the first section or on the child seat or the base for a child seat, the first and second section urges each other), and / or
• • an installation position, in particular that already described above, in which the first hook is in the first position, the second latch is in the released position and the transfer element is in the second non-driven position, the first latch being in the extended position according to the third configuration and the actuating element is not actuated (in particular the user does not actuate the release actuation, in particular not (increasingly) presses and/or keeps it pressed), with the telescopic system and thus the child seat or the base for a child seat not being attached to the motor vehicle seat, so that the length of the telescope system can be changed in a more limited way compared to the second configuration or is not changeable, and/or
• • an intermediate position when the telescopic system is shortened out of the locking position and the first bolt has not yet reached the next recess (of the first section) (wherein in particular the first hook is in the second position, the second bolt is in the locking position, the transfer element is in the first non-drive position and first latch are in the retracted position; the actuating element is not actuated (in particular the user preferably does not actuate the release actuation, in particular not (increasingly) presses and/or keeps it pressed); and the telescopic system and thus the child seat or the base for a child seat is attached to the motor vehicle seat), the length of the telescopic system being able to be increased slightly (e.g. by at least 2 mm or at least 4 mm and/or at most 2 cm or at most 1 cm), in particular until the first bar goes into the previous recess (of the first section ) intervenes when the first section and the second section to be pulled apart.

According to the embodiment, the intermediate position can, as in the locking position, allow the length of the telescopic system to be reduced (in particular if a force acts on the first section or on the child seat or the base for a child seat, urging the first and second sections towards one another) . Because a slight movement in the other direction is possible in the intermediate position, it can be achieved in a simple manner that the user can at least intervene in the previous recess, which in particular improves user-friendliness and safety.

Parts made of metal, in particular stamped parts, comprising, for example, the first hook and/or the first latch and/or the second latch can have different thicknesses and thereby have thin areas in order to enable smaller holes to be punched. The thin areas can arise from the areas of normal thickness by applying high pressure (e.g. by a kind of hammer blow).

The above-mentioned object is also achieved in particular by a child seat or base for a child seat, comprising two telescopic systems arranged next to one another, as described above, in particular for fastening the child seat or the base for a child seat on a force vehicle seat, in particular compatible with an Isofix anchorage or an anchorage in accordance with the ISO 13216 or UN ECE R 145 standard.

Furthermore, the above-mentioned object is achieved in particular by a method for attaching a child seat or a base for a child seat, as described above, to a motor vehicle seat, the first and second sections being displaced in relation to one another in the longitudinal direction in order to adjust the length of the telescopic system, the telescopic system optionally in the first, third and/or second configuration, preferably (successively) in the first, third and second configuration. Further method features result from the above and following description of the telescopic system or the child seat or the base. In particular, functional features can be carried out as specific method steps (for example a transfer from the third configuration to the second configuration can be carried out or initiated specifically).

Furthermore, the above-mentioned object is also achieved in particular by a method for detaching a child seat or a base for a child seat, as described above, from a motor vehicle seat, the method in particular following or preceding the method described in the preceding paragraph, the Telescope system is brought from the second configuration to the third configuration or from the second configuration to the first configuration (possibly via the third configuration). Further method features result from the above and following description of the telescopic system or the child seat or the base. In particular, functional features can be carried out as specific method steps (for example a transfer from the second configuration to the third configuration can be carried out or initiated specifically).

Further embodiments emerge from the dependent claims.

• 1a einen Kindersitz mit einem erfindungsgemäßen Teleskopsystem;
• 1b den Kindersitz gemäß 1a auf einer Basis für einen Kindersitz mit dem Teleskopsystem;
• 1c die Basis für einen Kindersitz mit dem Teleskopsystem;
• 2 die Basis für einen Kindersitz mit einer Unterseite zur Auflage auf einer Sitzfläche eines Kraftfahrzeugsitzes;
• 3 einen zweiten Abschnitt des erfindungsgemäßen Teleskopsystems mit einem seitlich am zweiten Abschnitt angeordneten Betätigungselement mit einer nicht betätigten Freigabebetätigung
• 4 eine Darstellung analog 3 mit betätigter Freigabebetätigung;
• 5 eine Darstellung korrespondierend zu 3, allerdings ist nun der innere Aufbau des nicht betätigten Betätigungselements zu sehen;
• 6 eine Darstellung korrespondierend zu 4, allerdings ist nun der innere Aufbau des betätigten Betätigungselements zu sehen;
• 7 das Teleskopsystem mit einem ersten Abschnitt und dem zweiten Abschnitt;
• 8 das Teleskopsystem mit nur einer Hälfte vom ersten Abschnitt;
• 9 eine Explosionsdarstellung des zweiten Abschnitts des Teleskopsystems;
• 10 eine Darstellung des gesamten Teleskopsystems mit einer vergrößerten Darstellung eines ersten Riegels sowie verschiedenen Abschnitten eines Transferelements;
• 11 eine Hälfte des zweiten Abschnitts des Teleskopsystems mit erstem Riegel gemäß einer ersten Konfiguration;
• 12 die eine Hälfte des zweiten Abschnitts des Teleskopsystems mit erstem Riegel gemäß einer dritten Konfiguration;
• 13 die eine Hälfte des zweiten Abschnitts des Teleskopsystems mit erstem Riegel gemäß einer zweiten Konfiguration;
• 14 eine alternative Ausführungsform eines erfindungsgemäßen Teleskopsystems, wobei das Transferelement einen gegenüber den anderen Komponenten des Transferelements in Längsrichtung beweglichen und mit einer fünften Feder vorgespannten Deblockierabschnitt aufweist;
• 15 das Teleskopsystem gemäß 14 in einer Verriegelungsstellung;
• 16 das Teleskopsystem gemäß 14 mit gegenüber 15 angehobenem ersten Riegel;
• 17 das Teleskopsystem gemäß 14, wobei sich erster Riegel genau zwischen zwei Ausnehmungen des ersten Abschnitts befindet;
• 18 das Teleskopsystem gemäß 14, wobei das Transferelement mit Ausnahme des Deblockierabschnitts in Richtung eines proximalen Endes (des zweiten Abschnitts) gedrängt ist, sodass sich ein zweiter Riegel gegenüber 17 in einer Freigabeposition befindet;
• 19a ein Zusammenspiel von Teilen des Teleskopsystems in seiner Verstellstellung;
• 19b ein Zusammenspiel von Teilen des Teleskopsystems in seiner Installationsstellung; und
• 19c ein Zusammenspiel von Teilen des Teleskopsystems in seiner Verriegelungsstellung.

The invention is described below using exemplary embodiments which are explained in more detail using the figures. Here show:

• 1a a child seat with a telescopic system according to the invention;
• 1b according to the child seat 1a on a base for a child seat with the telescopic system;
• 1c the base for a child seat with the telescopic system;
• 2 the base for a child seat with an underside for resting on a seat surface of a motor vehicle seat;
• 3 a second section of the telescopic system according to the invention with an actuating element arranged laterally on the second section with a non-actuated release actuation
• 4 a representation analogous 3 with actuated release actuation;
• 5 a representation corresponding to 3 , but now the internal structure of the unactuated actuator can be seen;
• 6 a representation corresponding to 4 , but now showing the internal structure of the actuated actuator;
• 7 the telescope system having a first section and the second section;
• 8th the telescope system with only half of the first section;
• 9 an exploded view of the second section of the telescope system;
• 10 a representation of the entire telescope system with an enlarged representation of a first latch and various sections of a transfer element;
• 11 one half of the second portion of the first latch telescoping system according to a first configuration;
• 12 one half of the second portion of the first latch telescopic system according to a third configuration;
• 13 one half of the second portion of the first latch telescoping system according to a second configuration;
• 14 an alternative embodiment of a telescopic system according to the invention, wherein the transfer element has an unlocking section that can be moved in the longitudinal direction relative to the other components of the transfer element and is preloaded with a fifth spring;
• 15 the telescope system according to 14 in a locked position;
• 16 the telescope system according to 14 with opposite 15 raised first bar;
• 17 the telescope system according to 14 , wherein the first bar is located exactly between two recesses of the first section;
• 18 the telescope system according to 14 , The transfer element with the exception of the deblocking section in the direction of a proxi paint end (of the second section) is pushed so that a second bar faces each other 17 is in a release position;
• 19a an interaction of parts of the telescope system in its adjustment position;
• 19b an interaction of parts of the telescope system in its installed position; and
• 19c an interaction of parts of the telescope system in its locked position.

In the following description of the figures, the same reference numerals are used for the same parts and those with the same effect.

1a shows a child seat 10 with a telescopic system 100 according to the invention.

1b shows the child seat 10 on a base for a child seat 11 with the telescopic system 100.

1c shows the base for a child seat 11 with the telescopic system 100.

2 Figure 12 shows the base for a child seat 11 with an underside 12 for resting on a seat bottom of a motor vehicle seat, and with a rear side 13 intended to face towards a backrest of the motor vehicle seat. Formed integrally with the base for the child seat 11, two first sections 110 of the telescopic system according to the invention are shown schematically. The two first sections 110 are flush with the underside 12 of the base for the child seat 11 at the bottom. They also do not protrude beyond the back 13 to the rear.

3 shows a second section 120 of the telescope system with a proximal end 121 designed as an end cap and a distal end 122.

Also shown on the side of the second section 120 is an actuating element 230 with a fixed section 231 and a movable section 232 as well as a release actuation 234. The fixed section 231 has a through hole (no reference number) on its outer side, in which, depending on the position of the Movable section 232 opposite the fixed section 231, non-illustrated color markings applied to the movable section 232 can be seen to indicate the current position of the first hook 130 shown here in its second position. The release actuator 234 is not actuated and the movable portion 232 is in a home position. The first hook 130 is located at the distal end 122 of the second section 120 and is switchable between a first position and a second position. In the second position, it includes an incision (unnumbered) at the distal end 122 of the second section 120 .

In 4 the same elements are shown as in 3 . In contrast to this, however, the release actuation 234 is now actuated and the movable section 232 is in a depressed position. The first hook 130 is in its first position, so that now only the actuating section 134 can be seen.

5 corresponds with 3 and 6 corresponds with 4 . However, the inner structure of the actuating element 230 can now be seen in each case: it can be seen that the release actuation 234 is mounted so that it can rotate about an axis (no reference number). When it is actuated against the force of a spring (not shown), an end designed as a third latch (holding device) pivots downwards and allows the movable section 232 to be pressed in the direction of the proximal end 121. The movable section 232 is also not pressed against the force of a shown spring and results in the first hook 130 being transferred to the first position as will be explained later in detail.

In 7 the telescope system 100 according to the invention is shown with the first section 110 and the second section 120 . The first section 110 has a multiplicity of recesses 111 shown here as through holes on its underside. On the side facing the actuating element 230 (not shown here), the first section 110 also has a lateral guide slot 112 . A first pin 236 and a second pin 237, which are provided for connection to the actuating element 230, extend through this. The telescope system 100 according to the invention is in a maximum extension.

8th shows the telescope system 100 according to the invention, only half of the first section 110 being shown here for reasons of clarity. The telescope system 100 according to the invention is shown here pulled back relatively far and it can be seen that the first pin 236 is firmly connected to the second section 120 . In addition, one can now see that the second section has an elongated hole 127 through which the second pin 237 extends.

The exploded view in 9 shows that the second portion 120 has a first half 120a and a second half 120b and a End cap 120c includes. And furthermore, the first hook 130 together with a first/second spring 131, a transfer element 160 together with a second latch 138, the first pin 236, a first latch 200 and the slot 127 can be seen.

10 12 again shows a representation of the entire telescope system 100 according to the invention with the first section 110 and the second section 120. It can be seen that the first hook 130 is supported in the first position shown on a first projection 123 of the second section. The second latch 138 is in the release position and is connected to the transfer element 160 . A third projection 125 connects the two halves 120a and 120b of the second section 120 and gives the second section 120 more stability. The third projection 125 of the second section 120, together with a clearance 166 of the transfer element 160, also forms a second guide 102 as a side effect.

Further details can be seen in the enlargement of the first bar 200 and sections of the transfer element 160 shown below: the first bar 200 has a blocking section 201 which is wedge-shaped. A first acting portion 202 can, as shown, cooperate with a bolt blocking portion 162 to transfer the first bolt 200 from an extended position shown, in which the locking portion 201 is in engagement with one of the recesses 111 of the first portion 110, to a retracted position to prevent. Opposite the latch blocking section 162, the transfer element 160 has a support section 165 with which it can be supported on the second section 120.

A second action section 203 of the first bolt 200 is opposite a drive section 161 of the transfer element 160 and is intended to interact with it in order to transfer the first bolt 200 from the extended position to the retracted position. In the illustrated position of the transfer element 160, however, the drive section 161 and the second action section 203 are spaced apart from one another.

Between the first action section 202 and the second action section 203 there is a free space 204 in which the bolt blocking section 162 can be accommodated when the transfer element 160 is in a drive position. On the side of the locking portion 201 facing the proximal end 121 there is a third action portion 208 which is intended to interact with an edge of the recess 111 with which the first latch 200 is engaged to move the first latch 200 towards the retracted position to urge.

The first bolt 200 can pivot about a second axis 206 on which it is mounted with a second bearing section 207 . Two third springs 205, one being a torsion spring and the other being a tension spring, bias the first latch 200 toward the extended position. The third spring 205 designed as a torsion spring is supported with one end on the first bar 200 and with the other end on a fourth projection 126 of the second section 120 .

The third spring 205 designed as a tension spring is supported with one end on the first bar 200 and with the other end on the second section 120 . It can be seen that the support point of the third spring 205 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 on the fourth projection 126.

11 shows the second section 120 of the telescope system 100 according to the invention. A first/second spring 131 has a first end 131a attached to the first hook 130, specifically approximately above the first bearing portion 133, and has a second end 131b attached to an arm of the L-shaped second latch 138.

The second bolt 138 can be moved together with the transfer element 160, which has a drive section 161 and a detection section 164, among other things. In the illustrated adjustment position of the telescopic system 100 according to the invention, the first hook 130 is in its first position (open), the second latch 138 is in its release position and the transfer element 160 is in the drive position, the first latch 200 is in the retracted position (according to the first Configuration) and the (not shown) actuator 230 is actuated. The child seat 10 connected to the telescopic system 100 or the base for a child seat 11 connected to the telescopic system 100 are thus not attached to the motor vehicle seat 1, and the length of the telescopic system 100 can be freely adjusted between a minimum extension and a maximum extension. A sensor 180 is shown schematically.

12 shows the same elements as 11 , However, there is the erfindungsge according to telescope system 100 now in an installation position. Also, the first hook 130 is in the first position (open) and the second latch 138 is in the release position. However, the transfer member 160 is now in a second non-driven position and the first latch 200 is in the extended position (according to the third configuration). Actuator 230 (not shown) is not actuated. The telescopic system 100 is not fixed to the motor vehicle seat 1 and the length of the telescopic system 100 cannot be changed because the latch blocking section 162 of the transfer element 160 blocks the first latch 200 on the first action section 201 and holds it in the extended position.

13 shows the already in 11 and 12 Elements shown, however, the telescope system 100 according to the invention is now in a locked position. Now the first hook 130 is in the second position, the second latch 138 is in a locking position and the transfer element 160 is in a first non-drive position. The first latch 200 is in the extended position (according to the second configuration) and the actuator 230 (not shown) is not actuated. The telescopic system 100 and, if applicable, the child seat 10 connected thereto or the base for a child seat 11 connected thereto are fastened to the motor vehicle seat 1, and the length of the telescopic system 100 cannot be increased, only reduced if a force is exerted on the first section 110 or acts on the child seat 10 or the base for a child seat 11 urging the first portion 110 and second portion 120 towards each other. It can be seen that the sensor 180 is now no longer opposite the detection section 164, so that a distinction can be made between the locking position and the release position of the second latch 138 (and thus between the first and second position of the first hook 130).

14-18 show an alternative embodiment of the telescope system 100 according to the invention. The design essentially corresponds to that shown above, but here the transfer element 160 has an unlocking section 167 that can be moved in the longitudinal direction in relation to the other components of the transfer element 160 and that has a fifth spring 168 in the direction of the proximal end 121 of the second section 120 is biased. The illustrated embodiment addresses the problem that it is at least theoretically conceivable that the first bolt 200 comes to a standstill precisely between two recesses 111 of the first section 110 and can then block the entire telescope system 100 . At this point it should be noted that in the 14-18 the first/second spring 131 and the fifth spring 168 are shown only schematically.

15 shows as already 14 the telescopic system 100. Here the unblocking section 167 and the fifth spring 168 unfold in comparison to the previously illustrated embodiment ( 1-13 ) still no effect.

In 16 the second latch 138 is still in its locking position opposite the first hook 130. A force pushing the first section 110 and the second section 120 towards one another has lifted the first latch 200 through the interaction of the edge of one of the recesses 111 and the third effective section 208 .

If, as in 17 shown, the first latch 200 comes to a stop exactly between two recesses 111 of the first section 110 and a user tries to move the second latch 138 from its locked position to the release position by actuating the (not shown) actuating element 230 in order to switch over the first To allow the hook 130 to move from the second position to the first position, the latch blocking portion 162 may run against the first engagement portion 202. Well, as in 18 shown, the transfer element 160 (with the exception of the unlocking section 167) are urged against the force of the fifth spring 168 in the direction of the proximal end 121, so that the second latch 138 can still reach the release position.

the 19a until 19c again show very schematically the basic interaction of parts of the telescope system 100 according to the invention, namely the second section 120, the first hook 130, the transfer element 160 with the second bar 138 and the first bar 200. 19a shows the adjustment position, 19b shows the installation position, and 19c shows the locked position.

At this point it should be pointed out that all parts described above, viewed individually and in any combination, in particular the details shown in the drawings, are claimed to be essential to the invention. Modifications of this are familiar to those skilled in the art.

Furthermore, it is pointed out that the aim is to have as broad a scope of protection as possible. In this respect, the disclosure contained in the claims can also be made more precise by features that are described with further features (even without these further features being necessarily included). It is explicitly pointed out that round brackets and the term "in particular" in the respective context are intended to emphasize the optionality of features (which does not mean, by implication, that without such identification is a feature to be considered mandatory in the relevant context). The term “element/element” should preferably identify a coherent structure in each case, which in turn can be connected to at least one other structure (to form a possibly one-piece and/or non-movable overall structure) or can be differentiated from all other structures.

Reference List

1

motor vehicle seat

2

automotive seat backrest

3

motor vehicle seat cushion

4

hanger

10

child seat

11

Base for a child seat

12

bottom

13

back

100

telescopic system

101

first lead

102

second lead

110

first section

111

recess

112

(side) guide slot

120

second part

120a, 120b

first and second half

120c

graduation cap

121

proximal end

122

distal end

123

first lead

124

second projection

125

third protrusion

126

fourth protrusion

127

Long hole

130

first hook

131

first/second spring

131a, 131b

first and second ends of the first/second spring

132

first axis

133

first camp section

134

operating section

135

locking section

135a, 135b

leg

136

engagement section

137

hook blocking section

138

second latch

139

locking section

140

first contact section of the second bar

160

transfer element

161

drive section

162

latch blocking section

163

second investment section of the transfer element

164

detection section

165

support section

166

exemption

167

deblocking section

168

fifth spring

180

sensor

200

first latch

201

lockdown section

202

first impact section

203

second exposure section

204

free space

205

third spring

206

second axis

207

second storage section

208

third impact section

230

actuator

231

fixed section

232

moving section

233

holding device

234

release actuation

235

fourth spring

236

first pen

237

second pen

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 3600954 B1 [0009]

Claims (13)

Telescopic system (100) for attaching a child seat (10) and/or a base for a child seat (11) to a motor vehicle seat (1), the telescopic system (100) comprising a first section (110) and a second section (120), the first and second sections being displaceable relative to one another in a longitudinal direction to adjust the length of the telescopic system (100), a first latch (200) being fitted in or on the second section, the telescopic system being able to be brought into at least a first, second and third configuration , wherein in the first configuration the adjustment of the length of the telescopic system (100) is made possible, in the second configuration the adjustment of the length of the telescopic system (100) is restricted compared to the first configuration and in the third configuration the adjustment of the length of the telescopic system (100) is more restricted or not possible compared to the second configuration. Telescope system (100) according to claim 1 , characterized in that the first section (110) on the child seat (10) or the base for the child seat (11), if necessary detachable, attached or attachable, and / or at least partially with the child seat (10) or the Base for the child seat (11) is formed integrally, the second section (120) preferably being provided for detachable attachment to a motor vehicle seat (1) and having a proximal end (121) and a distal end (122), wherein in the region of the Distal end (122) of the second section (120) further preferably a first hook (130) is provided, which is suitable for a bracket (4) provided on the vehicle, in particular an Isofix anchorage or an anchorage according to the ISO 13216 or UN standard ECE R 145, to couple the telescopic system (100) to the motor vehicle seat (1), the first hook (130) being switchable between a first position in which it does not attach the telescopic system (100) to the motor vehicle seat (1st ) pair t, and a second position in which it couples the telescopic system (100) to the motor vehicle seat (1). Telescope system (100) according to one of the preceding claims, characterized in that the second section (120) is at least 4 cm, preferably at least 8 cm long and/or at most 40 cm, preferably at most 30 cm long, and/or the first section (110) is at most 40 cm long and/or at least half as long as the second section (120). Telescope system (100) according to one of the preceding claims, characterized in that the minimum length of the telescope system (100) and the maximum length of the telescope system (100) are at least 4 cm, preferably at least 8 cm and/or at most 30 cm, preferably at most 20 cm, differ. Telescope system (100) according to one of the preceding claims, characterized in that a second latch (138) is provided in and/or on the second section (120) which, between a locking position in which the second latch (138) releases the first hook (130 ) holds in its second position and/or a release position in which the second latch (138) does not hold the first hook (130) in its second position. Telescope system (100) according to one of the preceding claims, characterized in that the first section (110) has a plurality of at least two, preferably 4 to 15, longitudinally spaced recesses (111). Telescope system (100) according to one of the preceding claims, characterized in that the first latch (200) has a blocking section (201) which can be selectively locked with a counter-structure, in particular with one of the recesses (111) of the immediately preceding claim, of the first section ( 110) is engageable or disengageable to longitudinally adjust the second portion (120) relative to the first portion (110) with respect to the length of the telescopic system (100), the locking portion (201) preferably having at least one retracted position corresponding to the first configuration and/or wherein the locking portion (201) can assume an extended position according to the second and/or the third configuration, and/or has a first acting portion (202) to be held in the extended position according to the third configuration and / or a second acting portion (203) to in the retracted to be held in position according to the first configuration and/or has a third acting section (208), in particular as part of the locking section (201), which is suitable according to the second configuration, by an edge of a counter-structure, in particular a recess (111) of the first Section (110) to be contacted when a force urges the first and second sections (120) towards each other to reduce the length of the telescopic system (100), wherein the third acting section (208) is preferably oblique with respect to the longitudinal direction , so that the first locking bar (200) is urged in the direction of the retracted position by the contacting of the third action section (208) and the associated force. Telescope system (100) according to one of the preceding claims, characterized in that a transfer element (160) is provided which is movable, preferably displaceable, in particular longitudinally displaceable, between at least a first non-drive position, a second non-drive position and a drive position in and/or on the second section (120), the transfer element (160) having a drive portion (161) adapted to selectively interact with the second action portion (203) of the first latch (200) to move it from the extended position to the retracted position and/or having a latch blocking portion (162) capable of selectively cooperating with the first acting portion (202) of the first latch (200) to prevent the latter from being translated from the deployed position to the retracted position and / or is operatively connected to the second bolt (138), such that a Movement of the transfer element (160), if necessary by means of an actuating element (230), can release the second bolt (138) for switching between the release position and/or the locking position. Telescope system (100) according to one of the preceding claims, characterized in that a first pin (236), in particular fixed, is connected to the second section (120) and/or a second pin (237), in particular fixed, to the transfer element ( 160), the first and second pins (237) being for connection to a/the actuator (230), the first portion (110) preferably having a lateral guide slot (112) extending longitudinally, preferably over at least 50% of the length of the first section (110), more preferably through which both the first pin (236) and the second pin (237) extend. Telescope system (100) according to any one of the preceding claims, characterized in that the second section (120) has an oblong hole (127) which overlaps with a section of the lateral guide slot (112) of the first section (110) and a movement of the second Pin (237) in the longitudinal direction towards the first pin (236) or away from this. Telescope system (100) according to one of the preceding claims, characterized in that an/the actuating element (230) is provided, in particular for preferably manual actuation by a user, with a fixed section (231) of the actuating element (230) being connected via a/the first pin (236), in particular firmly, is connected to the second section (120) and a movable section (232) of the actuating element (230) is operatively connected to the transfer element (160) via a/the second pin (237) and is movable at the same time is opposite the fixed section (231) and can be blocked by a holding device (233), in particular a third bolt, a release actuation (234) being provided in order to release the holding device (233). Telescopic system (100) according to one of the preceding claims, characterized in that it can be brought into the following positions: an adjustment position in which the first hook (130) is in the first position, the second latch (138) is in the release position and the transfer element ( 160) are in the drive position, with the first latch (200) being in the retracted position according to the first configuration and the actuating element (230) being actuated, so that the telescopic system (100) and thus the child seat (10) or the base for a child seat (11) is not attached to the motor vehicle seat (1), so that the length of the telescopic system (100) can be adjusted, and/or a locking position in which the first hook (130) is in the second position, the second latch (138) are in the locking position and the transfer member (160) are in the first non-driven position, the first latch (200) being in the extended position according to the second configuration and the Be actuating element (230) is not actuated, so that the telescopic system (100) and thus the child seat (10) or the base for a child seat (11) is attached to the motor vehicle seat (1), with the length of the telescopic system (100) only being able to be reduced , and/or an installation position in which the first hook (130) is in the first position, the second latch (138) is in the release position and the transfer element (160) is in the second non-driven position, the first latch (200) according to third configuration is in the extended position and the actuating element (230) is not actuated, so that the telescopic system (100) and thus the child seat (10) or the base for a child seat (11) is not attached to the motor vehicle seat (1), so that the length of the telescopic system (100) is more restrictedly variable or non-variable compared to the second configuration, and/or an intermediate position when the telescopic system (100) from the lock position is shortened and the first bolt (200) has not yet reached the next recess (111), the length of the telescopic system (100) being able to be increased slightly, in particular until the first bolt (200) engages in the previous recess (111). , when the first section (110) and the second section (120) are pulled apart. Child seat (10) or base for a child seat (11), comprising two telescopic systems (100) arranged next to one another according to one of the preceding claims, in particular for fastening the child seat (10) or the base for a child seat (11) on a motor vehicle seat (1 ), particularly compatible with an Isofix anchorage or an anchorage in accordance with the ISO 13216 or UN ECE R 145 standard.

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