Fastening system for child seats

Abstract

1. Fastening system (100), for fastening a child seat (10) and / or a base for a child seat (11) to a motor vehicle seat (1), comprising: a hook (130) which is suitable for engaging around a bracket (4), in particular an ISOFIX anchor, which is provided on the motor vehicle, in order to couple the fastening system (100) to the motor vehicle seat (1), wherein the hook (130) can be changed over between a first position, in which it does not couple the fastening system (100) to the motor vehicle seat (1), and a second position, in which it couples the fastening system (100) to the motor vehicle seat (1), and a preferably electrical detection device (180), comprising in particular a sensor (181) which is suitable for detecting whether the hook (130) is in the first or the second position, wherein the detection device (180) is configured for indirectly detecting the respective position and / or wherein the detection device (180), in particular the sensor (181), is at a distance from the hook (130), specifically both in its first and in its second position.

Description

[0001] Fastening system for child seats

[0002] Description

[0003] The invention relates to a fastening system for attaching a child seat and / or a base for a child seat to a motor vehicle seat.

[0004] The expert understands a child seat to be a restraint system for children used to transport a child in a vehicle, preferably a motor vehicle.

[0005] It should be noted that in the context of this invention, the term "child seat" is to be understood as a generic term for (classic) child seats, baby car seats, booster seats, booster seats, etc. For example, the child seat of this invention can be a (classic) child seat (for older children, e.g. Group I / II and / or III child seat) which has a backrest that is structurally separated from a seating area, the inclination of which can be varied relative to the seating area if necessary. The structural separation can be formed, for example, by a bend or similar. In general, however (unless stated otherwise in the specific context), child seat is always to be understood as an abbreviation for "child seat, for example baby car seat, booster seat and / or booster seat".Within the scope of this invention, features intended for a (conventional) child seat are in principle also applicable, for example, to an infant car seat, 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, babies, and toddlers. So-called "infant car seats" often comprise (only) a one-piece shell for accommodating the baby or child and may include its own belt system, possibly a headrest, and possibly other components. Instead of a (structurally defined) backrest, such "infant car seats" have a back section that adjoins a "seating area" in which the child's buttocks can be accommodated.

[0006] The expert defines the "base for a child seat" as a base on which a child seat can be attached, either detachably or permanently.

[0007] Child seats, infant carriers, booster seats, etc., that can be attached to a vehicle seat have been around for some time. Such child seats, infant carriers, booster seats, etc., serve as seating for children, babies, and toddlers, offering them increased protection, particularly in the event of an accident and / or emergency braking. Such child seats can be attached using the car's belt system or via Isofix anchorages. This type of attachment secures the child seat to the vehicle seat in the event of an accident, ensuring that it is held in place and prevented from being thrown forward, particularly in the event of a rear-end collision (impact) and / or emergency braking.

[0008] Since such child seats often have to be moved and / or installed and removed between different vehicles, especially motor vehicles, it is particularly important that the child seat's removable anchorage allows for user-friendly handling. Furthermore, however, easier handling should not come at the expense of the child's safety in traffic or in the event of an accident.

[0009] The attachment of the child seat to the motor vehicle seat must therefore be as stable as possible. At the same time, however, it is also desirable for the attachment to allow a certain degree of adjustability in order to be optimally adapted to different motor vehicle seats. An adjustable attachment system, in particular a telescopic system, for attaching a child restraint system, in particular a child seat, to a motor vehicle seat is known, for example, from EP 3 600 954 B1. However, although the attachment system disclosed therein consists of a large number of different individual parts (which means that the design is considered to be in need of improvement in terms of manufacturing costs and susceptibility to errors during use), it lacks a means of detecting the attachment of the child restraint system.

[0010] EP 1 871 637 A1 discloses a fastening system for attaching a child restraint system, in particular a child seat, to a motor vehicle seat. The fastening system comprises a first connector for connection to the motor vehicle seat and a second connector for connection to an anchorage of a child seat, wherein the second connector comprises a detector for detecting a secure connection to the motor vehicle seat. However, the reliability of the detection in EP 1 871 637 A1 is considered to be in need of improvement. Another disadvantage of this fastening system is the less user-friendly length adjustment of the system using pins.

[0011] It is therefore the object of the present invention to propose a fastening system for fastening a child seat and / or a base for a child seat to a motor vehicle seat, which meets the above-described requirements with regard to stability, user-friendliness, safety and universal applicability in the most cost-effective and error-free manner possible.

[0012] This problem is solved in particular by the features of claim 1.

[0013] In particular, the object is achieved by a fastening system for fastening a child seat and / or a base for a child seat to a motor vehicle seat, comprising:

[0014] • a hook suitable for engaging a bracket provided on the vehicle, in particular an Isofix anchorage (or an anchorage in accordance with standard ISO 13216 or UN ECE R 145), in order to couple the fastening system to the motor vehicle seat, wherein the hook is switchable between a first position in which it does not couple the fastening system to the motor vehicle seat (when the fastening system is in use), and a second position in which it couples the fastening system to the motor vehicle seat (when the fastening system is in use),

[0015] • and a preferably electrical detection device, comprising in particular a sensor, which is suitable for detecting whether the hook is in the first or the second position (and thus also whether the child seat or the base for a child seat is in a use state or in a non-use state), wherein the detection device is configured for the indirect detection of the respective position and / or wherein the detection device, in particular the sensor, is at a distance from the hook, both in its first and in its second position.

[0016] A key concept of the invention is that the respective position is not detected directly, but indirectly. Position detection can therefore be achieved in a particularly reliable and structurally simple manner. The path for transmitting information (for example, to an evaluation unit and / or a display unit and / or signaling device) about the state generally determined by a detection device is shortened. In contrast to the prior art, for example, no (electrical) cable or only a shorter cable is required to transmit the detected information about the usage status of the child seat or the base for a child seat along the (longitudinally displaceable) fastening system.This also results in the further advantage that the fastening system according to the present invention has a longer service life, for example, if there is no additional or only a comparatively short (electrical) cable that could break, fray, etc. during the service life of the fastening system. Another advantage of the fastening system of the present invention may be that the absence or reduction of cables can improve or simplify longitudinal displacement compared to designs according to the prior art. In this context, it was also recognized in particular that in the prior art, such as in EP 1 871 637 A1, a detector is arranged directly on the "second connector" (referred to as such in EP 1 871 637 A1).This results in the particular problem that cables intended to transmit the detector information from the second connector to a display device or display unit spatially separated from the second connector can be damaged, e.g., crushed, broken and / or abraded.

[0017] Unless expressly stated otherwise, the terms "first," "second," etc., e.g., second spring, are used to distinguish different elements from one another. The presence of a first spring or a second spring does not necessarily imply that more than one spring must be present.

[0018] The fastening system preferably comprises a transmission device, in particular one that is movable relative to the hook (preferably mechanical and / or rigid and / or has a maximum extension - understood as the distance between the pair of points of the transmission device with the greatest distance from one another - of at least 1 cm or at least 3 cm or at least 5 cm or at least 10 cm), which is in contact with the hook in at least or exactly one position and, depending on the position of the hook, can assume at least two transmission device positions, in particular a first transmission device position, a second transmission device position and / or a third transmission device position, wherein the detection device is configured to detect the respective transmission device position, in particular directly. This makes it possible, in particular, to reduce electrical transmission paths.

[0019] The fastening system may comprise a retaining bar which is switchable between a locking position in which the retaining bar holds the hook in its second position and a release position in which the retaining bar does not hold the hook in its second position, wherein the retaining bar is preferably a component of the transmission device already mentioned above.

[0020] Preferably, a minimum distance between the detection device or sensor and the hook is at least 1 cm, preferably at least 3 cm, more preferably at least 5 cm or at least 10 cm. The fastening system is preferably designed in a telescopic manner, wherein a first and a second section are provided, wherein the first and second sections are displaceable relative to one another to adjust a length of the fastening system (this is to be understood in particular as meaning that the first section and second section are movable relative to one another, in particular translationally, preferably in the longitudinal direction), wherein in or on the second section an adjustment bar is preferably provided which is configurable (oradjustable) is that the adjustment of the length of the fastening system is optionally possible and / or possible to a limited extent and / or not possible, wherein the first section is preferably fastened or fastenable to the child seat or the base for the child seat, if appropriate releasably, and / or is at least partially formed integrally with the child seat or the base for the child seat and / or wherein the second section is provided for, if appropriate releasably, fastening to the motor vehicle seat (wherein the motor vehicle seat in particular has a seat surface and a backrest).

[0021] Preferably, a second / the second section of the fastening system defines a cavity, e.g., formed by a pipe section, wherein a / the transmission device is preferably arranged predominantly or entirely within the cavity. A / the retaining bar can also be arranged partially, in particular predominantly or entirely, within the cavity.

[0022] Preferably, a / the second portion of the fastening system has a proximal end and a distal end, wherein the hook is arranged at the distal end.

[0023] Preferably, the first section 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 (see below) of the adjustment bar. 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.In particular, the adjustment bar has a locking portion, in particular the locking portion already described above, which can be selectively engaged or disengaged with a counterstructure, in particular with at least one of the longitudinally spaced-apart recesses, of the first portion in order to adjust the second portion relative to the first portion with regard to the length of the fastening system, wherein the locking portion can preferably assume at least one retracted position and / or wherein the locking portion can assume an extended position. The locking portion is, in particular, wedge-shaped at least in sections.

[0024] Additionally or alternatively, the adjustment latch in particular has a first engaging portion for holding the adjustment latch in the extended position. The first engaging portion may be adapted to cooperate with a latch blocking portion of a transfer element (see below) and to hold the adjustment latch in the extended position when the transfer element is in a second non-drive position (see below).

[0025] Additionally or alternatively, the adjustment latch preferably has a second engaging portion for holding the adjustment latch in the retracted position. The second engaging portion may be adapted to cooperate with a drive portion of the transfer element (see below) such that the adjustment latch is driven into the retracted position when the transfer element is transferred to a drive position (see below).

[0026] Adjacent to the first action section (in particular as a recess between the first action section and the second action section), a free space can be provided such that the latch blocking section of the transfer element is opposite the free space when the transfer element is in the drive position, so that the latch blocking section of the transfer element does not block switching of the holding latch into the retracted position.

[0027] Additionally or alternatively, the adjustment latch preferably has a third engagement portion, in particular as a component of the locking portion, which is suitable for being contacted by an edge of the counter-structure, in particular the recess, of the first portion when a force urges the first and second portions toward each other in order to reduce the length of the fastening system, wherein the third engagement portion is preferably oblique with respect to the longitudinal direction, so that the adjustment latch is urged in the direction of the retracted position by the contacting of the third engagement portion and the associated force.

[0028] The adjustment bar can be preloaded toward the extended position, in particular by at least one third spring. The adjustment bar can also be rotatable about a second axis, which is preferably fixed to the second section, and can have a second axis section or a second bearing section for this purpose. The third spring (or at least a third of possibly several third springs) can be attached to the second axis on the adjustment bar, in particular held and / or mounted, and / or can be designed as a leg spring.

[0029] Alternatively or additionally (particularly if multiple third springs are provided), the third spring (or at least one third of possibly multiple third springs) can also be attached, in particular held and / or mounted, to the adjustment 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.

[0030] In the extended position of the adjustment bar, a side of the locking section opposite the third action section can be arranged at least substantially 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 adjustment bar, a side of the locking section forming the third action section can enclose an angle in the range of 35° to 55°, preferably 45°, with the longitudinal direction.

[0031] Preferably, a transfer element (in particular the one already described above) is provided for the fastening system, preferably as a component of the transmission device already mentioned above, which is arranged displaceably, in particular longitudinally displaceably, between at least a first non-drive position, a second non-drive position (in particular the one already mentioned above) and a drive position (in particular the one already mentioned above) in and / or on the second section, wherein the transfer element has a drive section (in particular the one already mentioned above) which is suitable for selectively interacting with a (a / the second) engagement section of the adjustment bolt in order to transfer it from an extended position to a / the retracted position. The drive section can be formed by a surface which is at least substantially designed such that the longitudinal direction forms its surface normal.

[0032] Additionally or alternatively, the transfer element has a latch blocking section (in particular the one already mentioned above) which is suitable for selectively cooperating with a (first) engaging section of the adjustment latch to prevent the latter from being transferred from an extended position to a retracted position. The latch blocking section can have a blocking surface that is straight in the longitudinal direction or inclined relative thereto by at least 5° and / or at most 30°, preferably by at most 20°. If the latch blocking section is inclined, then preferably in such a way that transfer of the transfer element from the second non-drive position (in which the latch blocking section blocks transfer of the adjustment latch to the retracted position) to the first non-drive position (which corresponds to the locking position of the retaining latch) is facilitated.is possible even if a force pushes the adjustment latch towards the retracted position.

[0033] Additionally or alternatively, the transfer element is operatively connected to the retaining bar (in particular the one already mentioned above) in such a way that a movement of the transfer element, in particular by means of an actuating element, switches the retaining bar between the release position and / or the locking position.

[0034] Preferably, the adjustment latch and transfer element are coordinated with one another in such a way that a force for transferring the adjustment latch from the extended position to the retracted position can be transmitted to a portion (not predominant in terms of force amount) by the first action portion to the latch blocking portion in order to urge the transfer element from the second non-drive position to the first non-drive position.

[0035] The adjustment latch is preferably formed in one piece, possibly monolithic. The transfer element can be preloaded, in particular by a second spring (see below), towards the first non-drive position, in which the latch blocking section does not prevent the adjustment latch from being transferred from the extended position to the retracted position, and in which the drive section does not cooperate with the adjustment latch to transfer it from the extended position to the retracted position. In the first non-drive position, adjustment of the length of the fastening system can be permitted or enabled to a limited extent. The transfer element and the retaining latch can be designed and arranged such that the retaining latch is in the locking position when the transfer element is in the first non-drive position.In one embodiment, the transfer element comprises a second contact section for abutting the first contact section of the retaining bar.

[0036] Additionally or alternatively, the transfer element is preferably operatively connected to the retaining bar such that a movement of the transfer element, possibly by means of an actuating element (of the fastening system), can release the retaining bar for switching between the release position and / or the locking position. In particular, a movement of the transfer element by means of an actuating element can transfer the retaining bar from the locking position to the release position.

[0037] The transmission device can be made of plastic (at least 10 wt.% or at least 30 wt.%) and / or metal (at least 10 wt.% or at least 30 wt.%). Preferably, at least a portion of the transmission device that comes into contact with the hook is made of metal, in particular steel (at least 50 wt.% or at least 80 wt.%), and / or a portion of the transmission device that does not come into contact with the hook is made of plastic (at least 50 wt.% or at least 80 wt.%).

[0038] The transfer element can be made of plastic (to at least 50% by weight or at least 80% by weight), in particular as an injection-molded part. The retaining bar and transfer element can be firmly connected to one another, e.g. by fastening means, and / or a section of the retaining bar, in particular the first contact section, can be overmolded. According to the embodiment, the retaining bar is made of metal, in particular steel, (to at least 50% by weight or at least 80% by weight) and / or the transfer element is made of plastic (to at least 50% by weight or at least 80% by weight), in particular so that on the one hand high stability is achieved in a relevant area and on the other hand weight and / or costs are saved.

[0039] In an alternative embodiment, the retaining bar and transfer element can be formed monolithically.

[0040] In general, in particular the hook, the adjustment latch and / or the retaining latch (at least 50% by weight or at least 80% by weight) may be formed from metal, in particular steel.

[0041] The transmission device, in particular the transfer element, can have a second guide between the second section and the transfer element, specifically e.g. by means of a clearance, possibly a guide groove or a slot and a third projection, possibly a guide pin or bolt.

[0042] Preferably, the transmission device, in particular the transfer element, has support sections that directly abut the second section in order to support the transmission device, in particular 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, wherein a support section can preferably be provided at the level of the locking section opposite the blocking surface.

[0043] According to one embodiment, the fastening system can have, in or on the second section, in particular in addition to the adjustment bar, a further adjustment bar, in particular a second adjustment bar, which can assume at least one extended position and one retracted position with respect to the first and second sections and is suitable for selectively allowing or restricting the adjustment of the length of the fastening system. Reference is made here to EP 3 600 954 B1, the disclosure of which is hereby incorporated into the present application and in which, for example, two adjustment bars are provided for adjusting the length of the fastening system.If preferably the hook is in its first position and the adjustment latch, in particular its second action section, is held in its retracted position by the transmission device, in particular by the interaction with the drive section of the transfer element, the transmission device is in particular in the third transmission device position.

[0044] If preferably the hook is in its first position and the adjustment latch, in particular its first action section, is prevented from being transferred from the extended to the retracted position by the transmission device, in particular by the interaction with the latch blocking section of the transfer element, the transmission device is in particular in the second transmission device position.

[0045] When preferably the hook is in its second position and the adjustment latch, in particular its locking portion, is in engagement with one of the recesses of the first portion, the transmission device is in particular in the first transmission device position.

[0046] In particular, a transmission device, in particular a transfer element, can have a detection section which is suitable for being detected by the detection device, in particular the sensor, for determining the position of the transmission device, in particular the transfer element, wherein the detection section and the detection device, in particular the sensor, are preferably adjacent to one another in at least one transmission device position.

[0047] The motor vehicle seat can have (at least approximately) in the transition area between the seat surface and backrest at least one, preferably exactly two, bars, which can (each) be gripped by the hook of the fastening system. The child seat or the base for a child seat can have an underside 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 intended to face the backrest of the motor vehicle seat and, if necessary, to rest against it. Sections of the fastening system (in particular those already mentioned above) can be flush with the underside and / or the rear of the child seat or the base for a child seat.

[0048] In embodiments, the first and / or second section have (at least substantially) a cross-section that is at least partially square and / or rectangular.

[0049] The first and / or second section are preferably at least substantially profile-like (or as profile(s), possibly hollow and / or tubular.

[0050] According to the embodiment, the first and / or second section have a height (considered over a longitudinal extent) and / or a diameter (considered over a longitudinal extent) of less than or equal to 5 cm, preferably 2 cm - 3.5 cm.

[0051] According to the embodiment, the first and / or second section has / have a width (considered over a longitudinal extent) of less than or equal to 3 cm, preferably 1.0 cm - 2.0 cm.

[0052] Preferably, the first section can encompass or enclose the second section in sections (or vice versa, depending on the design).

[0053] 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.

[0054] 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).

[0055] In some embodiments, the second section has a number of preferably inwardly directed projections. Each of the projections can be formed over an entire width (transverse to the longitudinal direction, in particular in the left-right direction) or over a portion of the width of the second section. Each of the projections can, for example, be formed as a bulge and / or as a bolt. The second section preferably has a first projection for supporting the hook in its first position.

[0056] Alternatively or additionally, the second section preferably has a second projection, optionally a plurality of second projections, for guiding a latch and / or at least one third projection for guiding a / the transfer element. At least one optional fourth projection of the second section can serve to support the adjustment latch in its extended position.

[0057] The hook is preferably preloaded toward its first position, in particular by a first spring. The hook can be rotatable about a first axis, which is preferably fixed to the second section. Furthermore, the hook can have a first axis section or a first bearing section. The hook can also have a locking section suitable for engaging the vehicle-side bracket and / or be C- or U-shaped.

[0058] The locking portion can, in particular, have two opposing legs, one of which can be adjacent to an actuating portion of the hook. The first spring can be attached to the first axis of the hook, in particular held and / or mounted, and / or the first spring can be designed as a leg spring.

[0059] Alternatively, the first spring can be attached to the hook at a distance from the first axis, in particular held and / or mounted, and / or the first spring can be designed as a tension spring. Other types of springs are also conceivable in principle.

[0060] A first (functional) end of the first spring can be supported on the hook. A second end of the first spring can be supported on the second section. The first and a second spring, in particular the second spring already described above, can also be identical and formed by a single (first / second) spring that simultaneously preloads the hook to the first position and preloads the retaining bar towards the locking position. This is preferably achieved by a first end of the first / second spring being supported on the hook and a second end of the first / second spring being supported on the retaining bar (or possibly on the transfer element). Furthermore, a force acting on the actuating 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 hook to be transferred from the first position to the second position.

[0061] Preferably, the fastening system is completely retractable into the child seat or 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 retracted 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 so that it is also completely retracted or at least partially flush with the child seat or the base for a child seat.

[0062] The minimum length of the fastening system and the maximum length of the fastening system may differ by at least 4 cm, preferably at least 8 cm and / or at most 30 cm, preferably at most 20 cm.

[0063] The maximum projection of the fastening system over the child seat or the base of 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.

[0064] The retaining bolt 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 bear against the retaining bolt. A second end of the second spring can bear against the second section. The hook and the retaining bolt can be designed and arranged such that the hook holds the retaining bolt in the release position by means of a hook blocking section when the hook is in its first position, and that, furthermore, a transfer of the hook into its second position (for example by actuating the actuating section) allows a transfer of the retaining bolt into its locking position, in particular driven by the second spring or the first / second spring.

[0065] The hook can have an engagement portion into which the retaining bolt engages with a locking portion when the hook is in its second position and the retaining bolt is in its locking position. The retaining bolt can have a first contact portion for contact with the transfer element. The retaining bolt can also be L-shaped, in particular such that the end of one arm of the L-shape forms the locking portion and / or that the other arm of the L-shape (wholly or in sections) forms the contact portion. The retaining bolt can be made (at least 50% by weight or at least 80% by weight) of metal, in particular of steel. The retaining bolt can be switchable translationally (alternatively: rotationally or with a translational and rotational component) between the locking position and the release position.

[0066] The transmission device, in particular the transfer element, is preferably operatively connected to an actuating element (of the fastening system), in particular the actuating element already described above, for actuation by a user.

[0067] Furthermore, the fastening system preferably has a first pin which is connected, in particular firmly, to the second section and / or a second pin which is connected, in particular firmly, to the transfer element, wherein the first and second pins are preferably provided for connection to an actuating element, in particular the actuating element already described above, wherein the first section preferably has a lateral guide slot which extends in the longitudinal direction, preferably over at least 50% of the length of the first section, wherein more preferably both the first pin and the second pin extend through this. The minimum and maximum length of the fastening system can be determined by the lateral guide slot.

[0068] Preferably, the second portion has an elongated hole which overlaps with a portion of the lateral guide slot of the first portion and guides a movement of the second pin in the longitudinal direction towards or away from the first pin.

[0069] Preferably, an actuating element, in particular the one already described above, is provided, in particular for preferably (direct or indirect) manual actuation by the user. A fixed section of the actuating element is preferably connected, in particular fixedly, to the second section via a first pin, in particular the first pin already described above, and a movable section of the actuating element is preferably operatively connected to the transfer element via a second pin, in particular the second pin already described above, and / or is movable relative to the fixed section. Further preferably, the actuating element or the movable section thereof can be blocked by a holding device, wherein a release actuation can be provided to release the holding device.The actuating element, in particular its release actuation, can comprise at least one button and / or at least one key and / or at least one slider and / or at least one operating lever.

[0070] Preferably, the movable portion of the actuating element is movable relative to the fixed portion (and thus also to the second portion), in particular against a force of a fourth spring.

[0071] The fastening system preferably has an installation position (see below), wherein the transfer device is in the second transfer device position, the hook is in the first position, preferably the retaining latch is in the release position (held by the hook blocking portion of the hook), more preferably the transfer element is in the second non-drive position, and the adjustment latch is in the extended position, wherein a / the release actuation (of the actuation element) is not actuated by the user.

[0072] In the event that, according to a preferred embodiment, the user, for example starting from the installation position, wherein a / the release actuation (of the actuating element) is (still) not actuated, presses the hook, in particular its actuating section, against the vehicle-side bracket, the transmission device is transferred from the second to the first transmission device position, in particular the holding bar is transferred into the locking position and more preferably the transfer element is transferred from the second to the first non-drive position, wherein the adjustment bar is (still) in the extended position, and the hook is transferred (by actuating the actuating section by the vehicle-side bracket) into the second position, wherein the two legs of the hook engage around the vehicle-side bracket, so that the fastening system is transferred into a locking position (see below).

[0073] In the event that, according to a / the preferred embodiment, the user (now) actuates, in particular increasingly presses, a release actuation (of the actuating element) starting from the locking position, the transmission device is transferred from the first to the second transmission device position, in particular the transfer element is (initially) transferred from the first (again) to the second non-drive position and further preferably the holding latch is (again) held in the release position by the hook blocking section of the adjustment latch, wherein the adjustment latch is (now) (still) in the extended position and wherein the hook is brought into the first position (by the pre-tensioned first and / or first / second spring), so that the fastening system is (again) transferred into the installation position.

[0074] In the event that, according to a / the preferred embodiment, the user, for example, actuates a / the release actuation (of the actuating element) starting from the installation position, in particular increasingly presses it, the transmission device is transferred from the second to the third transmission device position, in particular the transfer element is transferred from the second non-drive position to the drive position and further preferably the holding latch is (still) in the release position, and wherein the adjustment latch is driven into the retracted position, wherein the hook is (still) in the first position, so that the fastening system is transferred into an adjustment position (see further below).

[0075] In the event that, according to a / the preferred embodiment, the user, for example, no longer operates a / the release actuation (of the actuating element) starting from the adjustment position, in particular releases the release actuation (slowly or abruptly), the fastening system is (re)transferred to the installation position.

[0076] In a further embodiment, the fixed portion of an actuating element has on its outer side a through-hole or a slot in which, depending on the position of the movable portion relative to the fixed portion, color markings applied to the movable portion can be seen in order to indicate the current position of the hook.

[0077] An actuating element may be provided (directly) on at least one of the first and second sections or remotely from the first and second sections.

[0078] The detection device (of the fastening system), in particular the sensor, is preferably suitable for detecting the position of the transmission device, preferably of the retaining bar and / or of the transfer element, wherein the detection device can comprise a switch that can be switched between a first and a second switch position, wherein the switching of the transmission device from the second to the first transmission device position, preferably the switching of the retaining bar from the release position to the locking position and / or the switching of the transfer element from the second non-drive position to the first non-drive position, can be linked to the switching of the switch from the second switch position to the first switch position (accompanied by the transfer of the hook to the second position),and / or the switching of the transmission device from the first to the second transmission device position, preferably the switching of the retaining bar from the locking position to the release position and / or the switching of the transfer element from the first non-drive position to the second non-drive position, can be linked to the switching of the switch from the first switch position to the second switch position (accompanied by the transfer of the hook to the first position).

[0079] The switch of the detection device can be biased in one of the two switch positions, preferably in the direction of the first switch position.

[0080] Preferably, a switch of the detection device comprises a button, in particular a push button intended to be pressed in or depressed, wherein an extended position of the button is linked to a first switch position, and a depressed position of the button is linked to a second switch position (in which the button can be at least further recessed or embedded in a switch housing than in the extended position), and / or a lever which, in a first switch position, is arranged in an oblique position with respect to the longitudinal direction of the fastening system and is suitable for being contacted by the detection section of the transmission device, in particular the transfer element, to switch the switch from the first switch position to the second switch position in order to transfer the button from the extended position to the depressed position.wherein the lever is moved into a position extending longitudinally and / or transversely to the longitudinal direction, wherein the lever is preferably movable back into the inclined position by a return spring, in particular a switch spring, in that the return spring, in particular the switch spring, transfers the button from the depressed position to the extended position (so that the button urges the lever towards the inclined position and the switch as a whole is pretensioned towards the first switch position).

[0081] In this way, it can be ensured, in particular with simple means, that the switch (of the detection device) only detects a locking position of the retaining bolt (and thus the second position of the hook) when this is actually present (because the transfer element must then be in the first non-drive position, so that the lever has not been placed in the position running in the longitudinal direction or transverse to the longitudinal direction and the push button is not pressed in, while both in the second non-drive position and in the drive position of the transfer element the switch is transferred to the second switch position).

[0082] Preferably, a detection section of the transmission device, in particular of a transfer element, and the detection device, in particular the sensor, are arranged between the adjustment bar and the proximal end of the second section (and / or according to the embodiment between the adjustment bar and the hook).

[0083] According to the design, the detection device is located behind the adjustment latch when viewed from the hook.

[0084] Preferably, a detection section of the transmission device, in particular of a transfer element, has zones of different conductivity, wherein preferably at least a first zone is made of metal and / or a second zone is made of plastic. The detection device preferably comprises electrical means, in particular an electrical sensor. It can be provided that the detection device is not connected to a mechanical display device (a mechanical signaling device) for displaying the position of the hook, and / or that the detection device is connected to an electrical display device (an electrical signaling device) for displaying the position of the hook.Electrically detecting the position of the hook has the advantage that the information thus obtained can be used flexibly, for example, to control a (preferably electrical) display device (signaling device) and / or to permit or prohibit other settings of the fastening system and / or the base for a child seat and / or the child seat. In particular, a display device (a signaling device) can also be very easily implemented whose display depends on the position of several, in particular two, hooks. A display device (a signaling device) can signal the position of the hook, for example, visually or acoustically.

[0085] Preferably, the detection device of the fastening system, in particular the sensor, is designed as a conductivity sensor and / or a resistance measuring device, in particular in order to detect the zones of different conductivity of a / the detection section.

[0086] A change in the detection of the locking position of the retaining bolt (possibly a switching of the switch (of the detection device) between the first switch position and the second switch position) can be associated with opening or closing an electrical circuit.

[0087] The detection device, in particular the sensor, possibly the switch, can be connected to other components by an electrical connection, in particular by electrical cables.

[0088] Information indicating whether the detection device detects the locking position of the retaining bar (if applicable, whether the switch is in the first or second switch position) can be used to control other devices of the child seat or the base for a child seat. Examples include: - The child seat or the base for a child seat can comprise a (possibly optical or acoustic) signaling device which signals the attachment state of the child seat or the base for a child seat to the motor vehicle seat depending on whether the retaining bar is detected in the locking position by the detection device.

[0089] - The child seat or the base for a child seat may alternatively or additionally comprise means, in particular active protection means, such as a bag that can be filled with a gas or means for tightening a belt (e.g. a belt system of the child seat) or the like, the use of which is only permitted if the detection device detects that the retaining bar is in the locking position.

[0090] The fastening system (as a whole) can preferably be moved into the following positions:

[0091] • an adjustment position, in particular the one already described above, in which the hook is in the first position, the transmission device is in the third transmission device position, in particular the holding latch is in the release position and the transfer element is in the drive position, wherein the adjustment latch is in the retracted position, the actuating element is actuated (in particular the user actuates the release actuation, in particular (permanently) presses and / or holds it pressed), and a / the switch of the detection device is in a / the second switch position, wherein the fastening system and thus the child seat or the base for a child seat is not fastened to the motor vehicle seat, so that the length of the fastening system is (freely) adjustable (between the minimum and maximum length), and / or

[0092] • a locking position, in particular the one already described above, in which the hook is in the second position, the transmission device is in the first transmission device position, in particular the holding latch is in the locking position and the transfer element is in the first non-drive position, wherein the adjustment latch is in the extended position, the actuating element is not actuated (in particular the user does not actuate the release actuation, in particular does not (increasingly) press and / or hold it pressed) and a / the switch of the detection device is in a / the first switch position, so that the fastening system and thus the child seat or the base for a child seat is fastened to the motor vehicle seat, wherein the length of the fastening system is only reducible (if in particular a force is exerted on the first section or on the child seat orthe base for a child seat, pushing the first and second sections together), and / or.

[0093] • an installation position, in particular the one already described above, in which the hook is in the first position, the transmission device is in the second transmission device position, in particular the holding latch is in the release position and the transfer element is in the second non-drive position, wherein the adjustment latch is in the extended position, the actuating element is not actuated (in particular the user does not actuate the release actuation, in particular does not (increasingly) press and / or hold it pressed) and a / the switch of the detection device is in a / the second switch position, wherein the fastening system and thus the child seat or the base for a child seat is not attached to the motor vehicle seat, so that the length of the fastening system can be changed to a further limited extent or cannot be changed, and / or

[0094] • an intermediate position when the fastening system is shortened from the locking position and the adjustment bar has not yet reached the next recess (of the first section) (in particular the hook being in the second position, the retaining bar being in the locking position, the transfer element being in the first non-drive position and the adjustment bar being in the retracted position; the actuating element being not actuated (in particular the user preferably does not actuate the release actuation, in particular does not (increasingly) press and / or hold the release actuation); and the fastening system and thus the child seat orthe base for a child seat is attached to the motor vehicle seat), wherein the length of the fastening system can be increased slightly (for example 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 adjustment bar engages in the previous recess (of the first section) when the first section and the second section are pulled apart. According to the embodiment, the intermediate position can allow, as in the locking position, the length of the fastening system to be reduced (in particular when a force acts on the first section or on the child seat or the base for a child seat, pushing the first and second sections towards each other).By allowing a slight movement in the other direction in the intermediate position, it is easy to ensure that the user can at least engage the previous recess, which in particular improves user-friendliness and safety.

[0095] Metal parts, especially stamped parts, including, for example, the hook and / or the adjustment latch and / or the retaining latch, can have different thicknesses and include thin sections to allow for the punching of smaller holes. The thin sections can be created from the normal-thickness sections by applying high pressure (e.g., by a type of hammer blow).

[0096] The above-mentioned object is also achieved in particular by a child seat or base for a child seat, comprising at least one fastening system as described above, preferably at least or exactly two fastening systems - in particular arranged next to one another - as described above, in particular for fastening the child seat or the base for a child seat to a motor vehicle seat, in particular compatible with an Isofix anchorage or an anchorage according to standard ISO 13216 or UN ECE R 145.

[0097] Furthermore, the above-mentioned object is achieved by a method for detecting a position of the hook of the fastening system and / or of the child seat or base, as described above, wherein the detection device, comprising in particular a sensor, detects whether the hook is in the first or the second position, wherein the detection device is configured for indirect detection of the respective position and / or wherein the detection device, in particular the sensor, is spaced from the hook, in particular both in its first and in its second position. Further embodiments emerge from the subclaims.

[0098] The invention is described below using exemplary embodiments, which are explained in more detail with reference to the figures. Herein:

[0099] Fig. 1a shows a child seat with a fastening system according to the invention;

[0100] Fig. lb the child seat according to Fig. la on a base for a child seat with the fastening system;

[0101] Fig. lc the base for a child seat with the fastening system;

[0102] Fig. 2 shows the base for a child seat with a bottom side for resting on a seat surface of a motor vehicle seat;

[0103] Fig. 3 shows a second section of the fastening system according to the invention with an actuating element arranged laterally on the second section with a non-actuated release actuation

[0104] Fig. 4 is a view similar to Fig. 3 with the release actuated;

[0105] Fig. 5 is a view corresponding to Fig. 3, but now showing the internal structure of the non-actuated actuating element;

[0106] Fig. 6 is a view corresponding to Fig. 4, but now showing the internal structure of the actuated actuating element;

[0107] Fig. 7 the fastening system with a first section and the second section;

[0108] Fig. 8 shows the fastening system with only one half of the first section; Fig. 9 shows an exploded view of the second section of the fastening system;

[0109] Fig. 10 is a view of the entire fastening system with an enlarged view of an adjustment latch and various sections of a transfer element;

[0110] Fig. 11 one half of the second section of the fastening system with adjustment latch in an adjustment position;

[0111] Fig. 12 one half of the second section of the fastening system with adjustment latch in an installation position;

[0112] Fig. 13 one half of the second section of the fastening system with adjustment latch in a locking position;

[0113] Fig. 14a shows one half of the second section of the fastening system with adjustment latch in the adjustment position according to Fig. 11, wherein the detection device specifically comprises a sensor designed as a switch;

[0114] Fig. 14b is an enlargement of the switch of the detection device according to Fig. 14a, which is in a second switch position;

[0115] Fig. 15a shows one half of the second section of the fastening system with adjustment latch in the installation position according to Fig. 12, wherein the detection device specifically comprises a sensor designed as a switch;

[0116] Fig. 15b is an enlargement of the switch of the detection device according to Fig. 15a, wherein the switch is in the second switch position;

[0117] Fig. 16a shows one half of the second section of the fastening system with adjustment latch in the locked position according to Fig. 13, wherein the detection device specifically comprises a sensor designed as a switch; Fig. 16b shows an enlargement of the switch of the detection device according to Fig. 16a, wherein the switch is in a first switch position;

[0118] Fig. 17a shows a schematic interaction of parts of the fastening system, wherein the switch of the detection device is in the first switch position;

[0119] Fig. 17b shows a schematic interaction of parts of the fastening system, wherein the switch of the detection device is in the second switch position;

[0120] In the following description of the figures, the same reference numbers are used for identical and equivalent parts.

[0121] Fig. 1a shows a child seat 10 with a fastening system 100 according to the invention.

[0122] Fig. lb shows the child seat 10 on a base for a child seat 11 with the fastening system 100.

[0123] Fig. lc shows the base for a child seat 11 with the fastening system 100.

[0124] Fig. 2 shows the base for a child seat 11 with a bottom side 12 for resting on the seat surface of a motor vehicle seat, and with a rear side 13 intended to face the backrest of the motor vehicle seat. Integrally formed with the base for the child seat 11, two first sections 110 of the fastening system according to the invention are schematically shown. The two first sections 110 are flush at the bottom with the bottom side 12 of the base for the child seat 11. Nor do they protrude beyond the rear side 13 to the rear.

[0125] Fig. 3 shows a second section 120 of the fastening system with a proximal end 121 designed as an end cap and a distal end 122. Also shown laterally from 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 (without reference number) on its outer side, in which, depending on the position of the movable section 232 relative to the fixed section 231, color markings (not shown) applied to the movable section 232 can be seen to indicate the current position of the hook 130, shown here in its second position. The release actuation 234 is not actuated, and the movable section 232 is in a starting position.The 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, as already shown in Fig. 3. In the second position, it includes a notch (no reference number) at the distal end 122 of the second section 120.

[0126] Fig. 4 shows the same elements as Fig. 3. However, in contrast to Fig. 3, the release actuation 234 is actuated and the movable portion 232 is in a depressed position. The hook 130 is in its first position, so that an actuating portion 134 of the hook can be seen.

[0127] Fig. 5 corresponds to Fig. 3 and Fig. 6 corresponds to Fig. 4. However, the internal structure of the actuating element 230 can now be seen: It can be seen that the release actuation 234 is rotatably mounted about an axis (without reference number). Its actuation against the force of a spring (not shown) pivots an end designed as a holding device downward and allows the movable section 232 to be pressed in the direction of the proximal end 121. The pressing in of the movable section 232 also occurs against the force of a spring (also not shown) and results in the hook 130 being moved into the first position, as explained in detail later.

[0128] Fig. 7 shows the fastening system 100 according to the invention with the first section 110 and the second section 120. The first section 110 has a plurality of recesses 111 on its underside, shown here as through-holes. 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 extend through this slot and are provided for connection to the actuating element 230. The fastening system 100 is in its maximum extension. Fig. 8 shows the fastening system 100, although for reasons of clarity, only half of the first section 110 is shown here. The fastening system 100 is shown relatively far back 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.

[0129] The exploded view in Fig. 9 shows that the second section 120 comprises a first half 120a and a second half 120b, as well as an end cap 120c. Also visible are the hook 130 together with a first / second spring 131, a transfer element 160 together with a retaining latch 138, the first pin 236, an adjustment latch 200, and the elongated hole 127.

[0130] Fig. 10 shows another representation of the entire fastening system 100 according to the invention with the first section 110 and the second section 120. It can be seen that the hook 130, in the illustrated first position, is supported on a first projection 123 of the second section. The retaining latch 138 is in a 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 provides the second section 120 with greater stability. The third projection 125 of the second section 120 increases the mechanical stability of the second section and, together with a release 166 of the transfer element 160, can also form a second guide 102 as a secondary effect.

[0131] In the enlargement of the adjustment latch 200 and sections of the transfer element 160 shown below, further details can be seen: the adjustment latch 200 has a wedge-shaped locking portion 201. As shown, a first engaging portion 202 can interact with a latch blocking portion 162 to prevent the adjustment latch 200 from moving from an extended position shown, in which the locking portion 201 engages one of the recesses 111 of the first portion 110, to a retracted position. Opposite the latch blocking portion 162, the transfer element 160 has a support portion 165 with which it can be supported on the second portion 120.A second engagement section 203 of the adjustment latch 200 is located opposite a drive section 161 of the transfer element 160 and is intended to cooperate with it to move the adjustment latch 200 from the extended position to the retracted position. However, in the illustrated position of the transfer element 160, the drive section 161 and the second engagement section 203 are spaced apart from each other.

[0132] Between the first engagement section 202 and the second engagement section 203 lies a free space 204, in which the locking section 162 is accommodated when the transfer element 160 is in a drive position. On the side of the locking section 201 facing the proximal end 121, there is a third engagement section 208, which is designed to cooperate with an edge of the recess 111, with which the adjustment lock 200 engages, in order to urge the adjustment lock 200 toward the retracted position.

[0133] The adjustment latch 200 is pivotable about a second axis 206, on which it is mounted by a second bearing section 207. Two third springs 205, one of which is a leg spring and the other a tension spring, bias the adjustment latch 200 toward the extended position. The third spring 205, designed as a leg spring, rests at one end on the first latch 200 and at the other end on a fourth projection 126 of the second section 120.

[0134] The third spring 205, designed as a tension spring, rests with one end on the adjustment 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 adjustment bar 200. In the extended position shown, the adjustment bar 200 rests on the fourth projection 126.

[0135] Fig. 11 again shows the second section 120 of the fastening system 100 according to the invention. A hook 130 with a locking section 135 is arranged at the distal end 122, wherein the hook 130 is rotatably mounted about a first axis 132 by a first bearing section 133. A first / second spring 131 is attached to the hook 130 with a first end 131a, specifically approximately above the first bearing section 133, and is attached to an arm of the L-shaped retaining bar 138 with a second end 131b.

[0136] The retaining bar 138 is movable together with the transfer element 160, which has, among other things, a drive section 161 and a detection section 164. In the illustrated adjustment position of the fastening system 100 according to the invention, the hook 130 is in its first position (open), the retaining bar 138 is in its release position, the transfer element 160 is in the drive position, the adjustment bar 200 is in the retracted position, and the actuating element 230 (not shown) is actuated. The child seat 10 connected to the fastening system 100 or the base for a child seat 11 connected to the fastening system 100 are thus not attached to the motor vehicle seat 1, and the length of the fastening system 100 can be freely adjusted between a minimum extension and a maximum extension. A detection device 180 is shown schematically (see also Fig. 13).

[0137] Fig. 12 shows the same elements as Fig. 11, but the fastening system 100 according to the invention is now in an installation position. Furthermore, the hook 130 is in the first position (open) and the retaining latch 138 is in the release position. However, the transfer element 160 is now in a second non-drive position and the adjustment latch 200 is in the extended position. The actuating element 230 (not shown) is not actuated. The fastening system 100 is not attached to the motor vehicle seat 1 and the length of the fastening system 100 cannot be changed because the latch blocking section 162 of the transfer element 160 blocks the adjustment latch 200 at the first engaging section 201 and holds it in the extended position.

[0138] Fig. 13 shows the elements already shown in Figs. 11 and 12, but the fastening system 100 according to the invention is now in a locking position. The hook 130 is now in the second position, the retaining latch 138 is in a locking position, and the transfer element 160 is in a first non-drive position. The adjustment latch 200 is in the extended position, and the actuating element 230 (not shown) is not actuated. The fastening 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 fastening system 100 cannot be increased but only reduced if a force acts on the first section 110 or on the child seat 10 or the base for a child seat 11, pressing the first section 110 and second section 120 towards each other.It can be seen that the detection device 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 retaining bolt 138 (and thus between the first and second position of the hook 130).

[0139] Figure 14a and the corresponding enlargement according to Figure 14b essentially correspond to Figure 11, with the fastening system being in the adjustment position and the detection device specifically comprising a sensor 181 embodied as a switch 182, which is more clearly visible in the enlargement. The switch 182 has a housing 183 and is in the second switch position. The lever 185 is oriented at least substantially in the longitudinal direction and is therefore not clearly visible.

[0140] Figure 15a and the corresponding enlargement Figure 15b essentially correspond to Figure 12, with the fastening system in the installation position. Figures 15a and 15b, like Figures 14a and 14b, show the sensor 181 specifically configured as a switch 182. It can be seen that the detection section is still pressing down the lever 185 of the switch 182, so that the (still not visible) push button 184 is recessed into the housing and the switch is (still) in the second switch position.

[0141] Figure 16a and the corresponding enlargement according to Figure 16b essentially correspond to Figure 13, with the fastening system in the locked position. Figures 16a and 16b, like Figures 14a to 15b, again show the sensor 181, which is preferably designed as a switch 182. The detection section 164 is now displaced so far toward the distal end 122 of the second section 120 that the switch spring (not shown) has forced the now visible push button 184 into the extended position, thereby moving the lever 185 into the inclined position. Thus, the switch of the sensor 181 is in the first switch position.Figures 17a and 17b again show very schematically a basic possibility of the interaction of parts of the fastening system 100, namely the second section 120, in particular the hook 130, the transfer element 160 (in particular the retaining bar 138) and the sensor 181 (in particular the push button 184, the lever 185 and the return spring 186). Figure 17a shows the switch 182 in the first switch position and spaced from the detection section 164, namely with the push button 184 in the extended position, the lever 185 in the inclined position and the relaxed switch spring 186 (here, for example, designed as a compression spring). Figure 17b shows the switch 182 in the second switch position, namely with the lever 185 pushed by the detection section 164 in a straight position (here: transverse to the longitudinal direction), which presses the push button 184 down against the force of the switch spring 186.

[0142] In some figures, the feathers are not shown entirely correctly for technical reasons.

[0143] At this point, it should be noted that all parts described above, viewed individually and in any combination, particularly the details shown in the drawings, are claimed as essential to the invention. Modifications to these are familiar to those skilled in the art.

[0144] Furthermore, it is pointed out that the broadest possible scope of protection is sought. In this respect, the disclosure contained in the claims can also be clarified by features that are described with further features (even without these further features being mandatory). It is explicitly pointed out that parentheses and the term "in particular" are intended to emphasize the optionality of features in the respective context (which does not mean, conversely, that without such identification, a feature is to be considered mandatory in the corresponding context). The term "element / elements" should preferably characterize a coherent structure, which in turn can be connected to at least one other structure (to form a possibly integral and / or inherently immobile overall structure) or can be delimited from all other structures.

[0145] Reference number 1 Motor vehicle seat

[0146] 2 vehicle seat backrest

[0147] 3 Motor vehicle seat surface

[0148] 4 brackets

[0149] 10 child seat

[0150] 11 Base for a child seat

[0151] 12 Bottom

[0152] 13 Back

[0153] 100 fastening system

[0154] 101 first tour

[0155] 102 second lead

[0156] 110 first section

[0157] 111 Recess

[0158] 112 (side) guide slot

[0159] 120 second section

[0160] 120a, 120b first and second half

[0161] 120c end cap

[0162] 121 proximal end

[0163] 122 distal end

[0164] 123 first lead

[0165] 124 second lead

[0166] 125 third lead

[0167] 126 fourth lead

[0168] 127 slot

[0169] 130 hooks

[0170] 131 first / second spring

[0171] 131a, 131b first and second end of the first / second spring

[0172] 132 first axle

[0173] 133 first camp section

[0174] 134 Operating section

[0175] 135 Locking section

[0176] 135a, 135b legs

[0177] 136 intervention section

[0178] 137 Hook blocking section

[0179] 138 retaining bars

[0180] 139 Locking section

[0181] 140 first contact section of the retaining bar 160 transfer element

[0182] 161 drive section

[0183] 162 bolt blocking section

[0184] 163 second section of the transfer element

[0185] 164 Detection section

[0186] 165 support section

[0187] 166 Exemption

[0188] 180 Recording device

[0189] 181 Sensor

[0190] 182 switches

[0191] 183 housings

[0192] 184 Button (push button)

[0193] 185 levers

[0194] 186 Return spring (switch spring)

[0195] 200 adjustment bars

[0196] 201 restricted section

[0197] 202 first impact section

[0198] 203 second impact section

[0199] 204 open space

[0200] 205 third spring

[0201] 206 second axle

[0202] 207 second camp section

[0203] 208 third impact section

[0204] 230 Actuator

[0205] 231 fixed section

[0206] 232 movable section

[0207] 233 Holding device

[0208] 234 Release operation

[0209] 235 fourth spring

[0210] 236 first pin

[0211] 237 second pin

Claims

Claims Fastening system (100) for fastening a child seat (10) and / or a base for a child seat (11) to a motor vehicle seat (1), comprising: a hook (130) which is suitable for engaging around a bracket (4) provided on the motor vehicle side, in particular an Isofix anchorage, in order to couple the fastening system (100) to the motor vehicle seat (1), wherein the hook (130) is switchable between a first position in which it does not couple the fastening system (100) to the motor vehicle seat (1), and a second position in which it couples the fastening system (100) to the motor vehicle seat (1), and a preferably electrical detection device (180), comprising in particular a sensor (181), which is suitable for detecting whether the hook (130) is in the first or the second position, wherein the detection device (180) is configured for indirect detection of the respective position and / or wherein the detection device (180),in particular the sensor (181), has a distance from the hook (130), both in its first and in its second position., Fastening system according to claim 1, characterized by a transmission device, which is movable in particular relative to the hook (130), preferably rigid, which is in contact with the hook (130) in at least or exactly one position and, depending on the position of the hook (130), can assume at least two transmission device positions, in particular a first transmission device position, a second transmission device position and / or a third transmission device position, wherein the detection device (180) is configured to detect the respective transmission device position, in particular directly.Fastening system according to claim 1, characterized by a retaining bolt (138) which can be switched between a locking position in which the retaining bolt (138) holds the hook (130) in its second position, and a release position in which the retaining bolt (138) does not hold the hook (130) in its second position, wherein the retaining bolt (138) is preferably a component of the transmission device according to claim 2. Fastening system according to one of the preceding claims, characterized in that a minimum distance between the detection device (180) or sensor (181) and the hook (130) is at least 1 cm, preferably at least 3 cm, more preferably at least 5 cm or at least 10 cm.Fastening system according to one of the preceding claims, characterized in that the fastening system (100) is designed telescopically, wherein a first (110) and second section (120) are provided, wherein the first (110) and second section (120) are arranged relative to one another for adjusting a length of the fastening system. which are displaceable, wherein in or on the second section (120) an adjustment bar (200) is preferably provided, which is configurable with respect to the first (110) and second section (120) such that the adjustment of the length of the fastening system (100) is optionally possible and / or possible to a limited extent and / or not possible, wherein i) the first section (110) is preferably fastened or can be fastened to the child seat (10) or the base for the child seat (11), optionally detachably, and / or is formed integrally with the child seat (10) or the base for the child seat (11) at least in sections and / or wherein the second section is provided for optionally detachable fastening to the motor vehicle seat (1) and / or wherein ii) a transfer element (160) is provided, preferably as a component of the transmission device according to claim 2, which is 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), wherein the transfer element (160) has a drive section (161) which is suitable for selectively cooperating with a, in particular second, engagement section (203) of the adjustment latch (200) in order to transfer the latter from an extended position into a retracted position, and / or has a latch blocking section (162) which is suitable for selectively cooperating with a, in particular first, engagement section (202) of the adjustment latch (200) in order to prevent the latter from being transferred from an extended position into a retracted position and / or which is operatively connected to the retaining latch (138), in particular the retaining latch (138) according to claim 3, such that a movement of the transfer element (160) moves the retaining latch (138) between the release position and / or the locking position switches., Fastening system according to one of the preceding claims, characterized in that a second / the second section (120) of the fastening system (100) has a proximal end (121) and a distal end (122), wherein the hook (130) is arranged at the distal end (122). Fastening system according to one of the preceding claims, characterized in that a / the transmission device, in particular according to claim 2, in particular a / the transfer element (160) according to claim 5, has a detection section (164) which is suitable for being detected by the detection device (180), in particular the / a sensor (181), for determining the position of the transmission device, in particular the transfer element (160), wherein the detection section (164) and the detection device (180), in particular the / a sensor (181), are preferably adjacent to one another. Fastening system according to one of the preceding claims, characterized in thatthat the detection device (180), in particular the sensor (181), is suitable for detecting the position of the transmission device, preferably of the / a holding bar (138) and / or of the / a transfer element (160), wherein the detection device (180) comprises a switch (182) which is switchable between a first and a second switch position, wherein the switching of the transmission device from the second to a / the first transmission device position, preferably the switching of the holding bar (138) from the release position to the locking position and / or the switching of the transfer element (160) from the second non-drive position to the first non-drive position, is linked to the switching of the switch (182) from the second switch position to the first switch position, and / or the switching of the transmission device from a / the first to the second transmission device position, preferably the switching, of the retaining bar (138) from the locking position to the release position and / or the switching of the transfer element (160) from the first non-drive position to the second non-drive position is linked to the switching of the switch (182) from the first switch position to the second switch position. Fastening system according to one of the preceding claims, in particular according to claim 7, characterized in that a / the switch (182) of the detection device (180) comprises a button (184), in particular a push button (184) intended to be pressed in or depressed, wherein an extended position of the button (184) is linked to a / the first switch position, and a depressed position of the button (184) is linked to a / the second switch position, and / or comprises a lever (185),which is arranged in a / the first switch position in an oblique position with respect to the longitudinal direction of the fastening system (100) and is suitable for switching the switch (182) from the first switch position to a / the second switch position by the detection section (164) of the transmission device, in particular the transfer element (160), in order to transfer the button (184) from the extended position to the depressed position, wherein the lever (185) is thereby moved into a position extending in the longitudinal direction and / or transversely to the longitudinal direction, wherein the lever (185) is preferably movable back into the oblique position by a return spring (186), in particular a switch spring (186), in that the return spring (186), in particular the switch spring (186), transfers the button from the depressed position to the extended position. Fastening system according to one of the preceding claims,characterized in that a / the detection section (164) of the / a transmission device, in particular of a / the transfer element (160), and the detection device, in particular of the, Sensor (181) is arranged between the adjustment bar (200) and the proximal end (121) of the second section (120). Fastening system according to one of the preceding claims, characterized in that a / the detection section (164) of / a transmission device, in particular of a / the transfer element (160), has zones of different conductivity, wherein preferably at least a first zone is made of metal and / or a second zone is made of plastic. Fastening system according to one of the preceding claims, characterized in that the detection device (180) of the fastening system (100), in particular the sensor (181), is designed as a conductivity sensor and / or a resistance measuring device, in particular to detect the zones of different conductivity of a / the detection section (164).Child seat (10) or base for a child seat (11), comprising at least one fastening system (100) according to one of the preceding claims, preferably at least or exactly two, in particular juxtaposed, fastening systems (100) 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), in particular compatible with an Isofix anchorage or an anchorage according to standard ISO 13216 or UN ECE R 145. Method for detecting a position of the hook (130) of the fastening system (100) according to one of claims 1 to 12 and / or of the child seat (10) orthe base (11) according to claim 13, wherein the detection device (180), comprising in particular a sensor (181), detects whether the hook (130) is in the first or the second position, wherein the detection device (180) is configured for indirect detection of the respective position and / or wherein the detection device (180), in particular the sensor (181), has a distance from the hook (130), both in its first and in its second position.

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