Child restraint system

Abstract

The present disclosure relates to child restraint systems and components of child restraint systems, such as child seats such as toddler child seats and baby seats, support bases of child seats, in particular support bases that can be fixed to vehicle seats, and the bases may be part of child seats, such as child seats and baby seats. Or may be configured such that a child seat can be releasably coupled thereto.

Description

Technical Field

[0001] The present disclosure relates to a child restraint system and components of a child restraint system, such as a child seat such as a toddler seat and an infant seat, a support base for a child seat, in particular a support base that can be fixed to a vehicle seat and which can be an integral part of the child seat or can be configured so that the child seat can be releasably coupled to them. In addition, the present disclosure relates to improvements in child seats. Background Art

[0002] Child restraint systems that include a child seat and / or a support structure, such as a base, that is mounted on a vehicle seat and serves as an interface between the child seat and the vehicle seat are known in the art.

[0003] Such systems need to meet the highest safety standards while being user-friendly.

[0004] A disadvantage of the known systems is that they are generally cumbersome to use. Furthermore, there is still a need for improved safety features. Summary of the invention

[0005] The present disclosure relates to improvements in child restraint systems of the type described above. In particular, the present disclosure relates to improvements in bases for releasably supporting child seats, and to improvements in child seats releasably mounted on bases. In addition, the present disclosure relates to improvements in child seats, such as infant seats and toddler seats.

[0006] One object is to provide an enhanced child restraint system and / or a component of a child restraint system, such as a base and / or a child seat such as a toddler seat or an infant seat.

[0007] This object is solved by the configurations presented in the claims, aspects and exemplary configurations as described herein. Advantageous further configurations can be gathered from the dependent claims and from the following description.

[0008] In some embodiments, a base for a child restraint system is provided. In some embodiments, the base can be configured to removably couple a child seat to a vehicle seat. In some embodiments, the base can be configured as an integral part of a child seat, such as a rotatable child seat for a vehicle. In some embodiments, the base can be an integral part of a load-bearing structure, such as a vehicle or a stroller.

[0009] In some embodiments, the base may include a main support portion. The main support portion may protrude from an upper surface portion of the base in a first direction. The main support portion may be configured to be releasably engaged by an engagement portion of an inserted child seat in a positive locking manner to prevent movement of the child seat in the first direction. The main support portion may be configured to support the child seat to be rotatable about a rotation axis extending parallel to the first direction. The main support portion may include a conical appearance. The main support portion may include a free upper end portion that is narrower in size than a lower end portion.

[0010] In some embodiments, the lateral outer surface of the main support portion is configured to receive an engagement portion of a child seat for establishing a forced lock. In some embodiments, the main support portion includes a circumferential recess configured to receive an engagement portion of a child seat, thereby allowing the child seat to be connected (e.g., snapped into) to the main support portion in a plurality of arbitrary angular position orientations around the axis of rotation. The main support portion may be configured to allow the child seat to be connected in an arbitrary angular orientation. In some embodiments, the main support portion may be configured to provide an angular drop zone for the child seat within a range greater than 90° at least on each lateral side of the main support portion. The range may be greater than 100°, such as substantially 110°, such as 112°. The foregoing angular range may be provided around the axis of rotation provided by the main support portion, and may be symmetrical about a lateral direction perpendicular to the axis of rotation, such that half of the size of the angular range is correspondingly provided on the opposite side of the lateral direction.

[0011] In some embodiments, the main support portion is configured to bear the majority of the weight of an installed child seat. Additionally or alternatively, in some embodiments, the main support portion may be configured to support the child seat at a predetermined distance from an upper surface portion of the base. Additionally or alternatively, in some embodiments, the main support portion may be configured as a fixed support portion.

[0012] In some embodiments, the main support portion may include an upper portion supported in a suspended manner by the support portion, such that the suspended portion of the upper portion can be used to establish a positive lock. In some embodiments, the circumferential recess is bounded by a lower surface of the upper portion and an outer surface of the support portion. In some embodiments, the support portion may be at least partially tapered toward the upper portion.

[0013] In some embodiments, the upper portion includes a layer structure having an upper layer and a lower layer supporting the upper layer. In some embodiments, the upper layer may be configured to slide in contact with the lower support surface of the child seat to be supported. In some embodiments, the lower layer includes a higher stiffness than the upper layer. Additionally or alternatively, in some embodiments, the upper layer may include a low friction material configured to slide in contact with the child seat. This low friction material may include, for example, a synthetic material, such as polyoxymethylene (POM). Additionally or alternatively, in some embodiments, the lower layer may include a metallic material. Additionally or alternatively, in some embodiments, the upper layer may at least partially surround the outer edge region of the lower layer. The lower side of the lower layer may be exposed or uncovered so that the engaging component of the installed child seat may directly contact the lower layer. In some embodiments, the upper layer includes a sliding surface extending around the recess. In some embodiments, the sliding surface may include an annular shape.

[0014] In some embodiments, the recess is mechanically coded so that another component, such as an insert such as a stick-on label, can only be inserted into the recess in the correct orientation. The recess may be substantially circular. The recess may include a protrusion extending laterally inwardly into the recess. The mechanically coded recess may be used as a positioning aid, and the protrusion may be used as a positioning portion. The protrusion may protrude into the recess in a radial direction.

[0015] In some embodiments, the main support portion may be configured as a hollow body. This hollow body may be closed at the top and may define a receiving space in its interior. In some embodiments, the receiving space is configured to receive a portion of the tensioning mechanism and / or a sensor of the sensor assembly.

[0016] In some embodiments, the base includes at least one secondary support portion. In some embodiments, the secondary support portion is radially spaced from the primary support portion. In some embodiments, the secondary support portion may be configured to receive a restraint portion of a child seat, wherein the restraint portion may be defined in or form part of a coupling interface of the child seat.

[0017] In some embodiments, the secondary support portion may be configured to receive a restraint portion of a child seat by rotating the child seat about the rotation axis after the child seat is inserted onto the primary support portion. The secondary support portion may be configured to engage with the restraint portion. For example, the secondary support portion may be configured such that a restraint portion of a child seat may be brought into locking engagement with the secondary support portion by being inserted beneath the secondary support portion. This may prevent movement of the restraint portion relative to the base in the event of a crash scenario. Furthermore, the secondary support portion may be configured such that an inserted child seat cannot be removed without rotating it out of engagement with the secondary support portion.

[0018] In some embodiments, the secondary support portion may be reinforced to withstand large forces. For example, the secondary support portion may be steel reinforced. The secondary support portion may be made of or may include a sheet metal component.

[0019] In some embodiments, the at least one secondary support portion is configured to limit tilting movement of the child seat about a second rotation axis extending perpendicular to the rotation axis.

[0020] In some embodiments, the secondary support portion can be configured to reduce the play between the inserted restraining portion of the child seat and the secondary support portion. By removing the play, the seat can be held in a more rigid manner. In addition, the noise generated due to vibration can be reduced.

[0021] In some embodiments, at least one of the secondary support portions includes a pushing member. The pushing member may be a spring leaf. The pushing member may be provided to exert a pushing force on the constraint portion in a second direction opposite to the first direction when the constraint portion is received in the secondary support portion.

[0022] In some embodiments, the insertion geometry of at least one secondary support portion is mechanically encoded to prevent the child seat from being positioned in a predetermined orientation. This predetermined orientation may be a forward-facing orientation of the child seat. In some embodiments, the secondary support portion may include an adjacent portion configured to limit the rotation of the child seat about the rotation axis toward a forward-facing orientation. In the context of the present disclosure, a forward-facing orientation or an orientation in a forward-facing direction will mean that the child seat is oriented so that the visual direction of a seated child is in the direction of travel, for example, in the direction of travel of a vehicle. In some embodiments, the adjacent portion may be configured to contact a stop portion provided on the child seat.

[0023] In some embodiments, the abutment portion includes an abutment surface configured to contact a surface of the stop portion. In some embodiments, the abutment surface is formed so that when the stop portion is urged against the abutment portion when the child seat is rotated, the stop portion is urged in a second direction opposite to the first direction. The abutment surface may be inclined.

[0024] The abutment portion may limit the aforementioned drop zone.The abutment surface of the abutment portion may define an angular range or an end of the drop zone.

[0025] In some embodiments, at least one secondary support portion is configured so that the rotation of the child seat around the rotation axis is automatically blocked when a rearward-facing orientation is reached when the child seat is rotated around the main support portion. In the context of the present disclosure, a rearward-facing orientation or an orientation in a rearward-facing direction will mean that the child seat is oriented so that the visual direction of the seated child is opposite to the direction of travel (e.g., a direction of travel corresponding to the direction of travel of the vehicle). Additionally or alternatively, in some embodiments, at least one secondary support portion may be configured so that the child seat is generally blocked from reaching a forward-facing orientation and can only be rotated to a forward-facing orientation when an actuation component is actuated by a user. In some embodiments, the actuation component is a release component of a locking mechanism for locking the rotation of the child seat around the rotation axis. In some embodiments, the locking mechanism is provided in the secondary support portion. The locking mechanism may be configured to engage with a restraining portion of the child seat.

[0026] In some embodiments, the locking mechanism is configured to be operable by an operating force applied thereto by the child seat. In some embodiments, the operating force may be generated by converting a rotational force applied to the child seat into the operating force.

[0027] In some embodiments, the locking mechanism may include a locking component. The locking component may be movable between a locking position in which it can engage with a restraining portion of the child seat and a release position in which the child seat is not prevented from rotating about the rotation axis. In the release position, the locking component is disengaged from the restraining portion. In some embodiments, the locking component may be biased by a pushing component so that movement of the locking component toward the release position may overcome the pushing force applied by the pushing component. In some embodiments, the locking component may include a force-bearing surface extending so that when the child seat rotates about the rotation axis, an operating force may be generated by sliding contact between the force-applying surface on the child seat and the force-bearing surface.

[0028] In some embodiments, the secondary support portion includes a retaining structure for preventing the inserted restraining portion from lifting from the base to prevent rotational movement of the child seat in the event of a crash. In some embodiments, the retaining structure includes a retainer. The retainer may include a gripping portion configured to receive the restraining portion of the child seat. The gripping portion may include a hook shape. The gripping portion may be made of metal or include a metal component.

[0029] In some embodiments, the retainer is forcefully coupled to a coupling portion configured to engage with a fixed structure in a vehicle seat. In some embodiments, the coupling portion may be provided on a coupling assembly. The coupling assembly may include a connector, such as a coupling arm, such as an Isofix arm.

[0030] Additionally or alternatively, in some embodiments, the coupling portion may be adjustably retained on the base at the coupling portion to allow the base to be tightened on the vehicle seat.

[0031] In some embodiments, the retainer can be force-transmittingly coupled to the coupling portion by means of a force transfer path including a rigid force transfer link. The force transfer link can be a metal force transfer link. In some embodiments, the force transfer path includes only metal force transfer links, and all of the rigid force transfer links are metal force transfer links.

[0032] In some embodiments, the force transfer link may include a coupling portion support frame. The coupling portion support frame may include a connector support frame. The coupling portion support frame may include a U-shaped housing. The coupling portion may be supported on the coupling portion support frame.

[0033] The force transfer link may include a coupling member, such as a rod, for coupling the retainer to the coupling portion support frame. In some embodiments, the retainer is coupled to the coupling portion support frame only by a single coupling member. The retainer may include a coupling portion. The coupling portion may include an opening for receiving a coupling member, such as a rod.

[0034] In some embodiments, the retaining structure may include two retainers and two coupling portion support frames. Each coupling portion support frame may support a coupling portion, such as a connector. The two coupling portion support frames may be coupled to each other by a single coupling portion (such as the coupling portion described previously), for example, by a rod. The two retainers may be coupled to the single coupling portion. The two coupling portion support frames may be arranged to be laterally spaced apart from each other on the base.

[0035] In some embodiments, a child seat is provided that can be coupled to a base. The base can be a base as described above or as further described below.

[0036] In some embodiments, the child seat includes an interface portion that can be releasably engaged with the main support portion. In some embodiments, the interface portion includes a recess configured to receive the main support portion. In particular, the recess can be configured to receive the main support portion in a first direction. The insertion direction of the child seat can be a direction opposite to the first direction. Therefore, when the child seat is inserted into the base, the main support portion can be received in the child seat. In some embodiments, the interface portion may include a support surface configured to contact a longitudinal end portion of the main support portion.

[0037] In some embodiments, the child seat may include a locking mechanism for releasably locking the child seat to the main locking portion. The locking mechanism may include an engagement portion arranged to be radially movable into and out of the recess to enable engagement with the main support portion, for example with a circumferential recess of the main support portion. In some embodiments, the locking mechanism may include an operating member for retracting the engagement portion.

[0038] In some embodiments, the open end portion of the recess may be defined by an inclined circumferential wall portion, wherein the outer diameter of the recess decreases from the opening toward the support surface. In other words, the recess may include a chamfered portion that provides a centering function when the child seat is inserted on the base and facilitates the insertion of the child seat on the main support portion.

[0039] In some embodiments, the operating component may be positioned on the child seat so that the operating component is accessible only when the child seat is rotated to an unlocked orientation that is different from the forward-facing or rearward-facing orientation of the child seat on the base. In some embodiments, the operating component is disposed on a bottom surface of the child seat. In some embodiments, the operating component is disposed at a position on the child seat so that the operating component is covered by the base when the child seat is in the forward-facing or rearward-facing orientation and is exposed only in the unlocked orientation. The operating component may be disposed at a foot end of the child seat.

[0040] In some embodiments, a child restraint system is disclosed that includes a base and a child seat. The base may be constructed as previously described, or may be constructed as described below with respect to further embodiments and modifications. The child seat may include one or more of the features as previously described, and may additionally or alternatively include one or more of the features that will be further described below with reference to further embodiments and modifications.

[0041] In some embodiments, the base may include a tensioning mechanism configured to generate an urging force for urging the base onto the vehicle seat once the base is operatively coupled to a fixed structure of the vehicle.

[0042] In some embodiments, the tensioning mechanism is configured so that a user can generate a pushing force by repeatedly moving an operating component of the tensioning mechanism back and forth.

[0043] In some embodiments, the base of the child restraint system may include an attachment portion for fixedly attaching the base to a fixed structure of the vehicle.

[0044] In some embodiments, the base may include an anti-rebound portion configured to contact a backrest of a vehicle seat for at least limiting rotational movement of the base toward the backrest in the event of a crash.

[0045] In some embodiments, the base may include a tensioning mechanism configured to apply a tensile force on the coupling portion. The base may include connectors, each connector including a coupling portion. The connectors and / or the coupling portions may be connected to each other by a connecting portion (e.g., a belt or a rigid connector). The tensioning mechanism may be configured to apply a force, such as a tensile force, on the connecting portion and / or the connector.

[0046] In some embodiments, the base may include a tightening mechanism for reducing the distance between the anti-rebound portion and the coupling portion. In some embodiments, the tightening mechanism is configured so that a user can reduce the distance by repeatedly moving the operating component back and forth.

[0047] The tightening mechanism may include an operating member operable by a user. The operating member may be force-transmittively coupled to one or more coupling portions and / or connectors for coupling the base to a fixed structure on the vehicle seat via a tightening force transmission path.

[0048] In some embodiments, the tensioning mechanism may include an operating component and an indicator device configured to indicate to a user when the operating component is ready for tensioning. In some embodiments, the indicator device is configured to provide a visual and / or audible indication to the user. In some embodiments, the indicator device is configured to move the operating component to a predetermined indication position.

[0049] In some embodiments, to actuate the tensioning mechanism, the operating component can be moved between a stowed position and a deployed position. The stowed position can be a position where the operating component is accommodated in or on the base, for example, so that the operating component does not protrude beyond the upper surface portion of the base. The deployed position can be a position where the operating component protrudes beyond the upper surface portion of the base. For example, the deployed position can be a position where the operating component is positioned to extend at a certain angle to the base. In the stowed position, the operating component can extend substantially in a horizontal direction. In the deployed position, the operating component can extend at a certain angle relative to the horizontal direction. The predetermined indication position can be an intermediate position between the stowed position and the deployed position.

[0050] In some embodiments, the base includes a recess in the upper surface portion, such as to allow grasping of the operating member when the operating member is disposed in the stowed position.

[0051] In some embodiments, the indication device is configured to automatically move the operating component to a predetermined indication position when a predetermined condition is met. The predetermined condition may include a condition in which the coupling portion is engaged with the fixed structure. The predetermined condition may include a condition in which the distance between the coupling portion and the anti-rebound portion is reduced to a predetermined intermediate distance, for example, by pushing the base toward the backrest of the vehicle seat in a pushing direction, and the coupling portion is engaged with the fixed structure of the vehicle seat.

[0052] In some embodiments, the indicating device may include two mating portions, such as a toothed portion and a recessed portion. At least one of the two mating portions may be movable relative to the other, and the mating portions may be configured to enter a releasable engagement when a predetermined indication position is reached. In some embodiments, the two mating portions may be configured to at least restrict movement of the operating component away from and / or into the predetermined indication position. In some embodiments, one of the two mating portions is provided on the operating component, and the other of the two mating portions is provided on the body of the base.

[0053] In some embodiments, the operating member is force-transmittingly coupled to the coupling portion via a ratchet mechanism. The ratchet mechanism may be configured to allow the torque applied to the operating member to be transmitted only in the tensioning direction. In some embodiments, the ratchet mechanism includes a locking member configured to releasably lock the operating member to an output member of the ratchet mechanism. The locking member may be a spring-loaded locking member. The output member may be an output shaft. When the operating member is locked to the output member, the operating member may move integrally with the output member at least in the tensioning direction. In some embodiments, the output member includes a gear fixed to the output member so as to be integrally rotated with the output member.

[0054] In some embodiments, the operating member is a lever that can rotate about a pivot axis. The lever can be a curved lever. The lever can be pivotally supported at both ends. The lever can include a U-shape. In some embodiments, the lever can extend around the main support portion. In some embodiments, the lever is supported on opposite sides of the main support portion. In some embodiments, the pivot axis of the lever extends in a lateral direction of the base.

[0055] In some embodiments, the tensioning mechanism is configured to move the coupling portion relative to the anti-rebound portion. In some embodiments, the tensioning mechanism is configured to translate the coupling portion relative to the anti-rebound portion. In some embodiments, the tensioning mechanism is configured to translate the coupling portion in a longitudinal movement direction.

[0056] In some embodiments, the tensioning mechanism is configured to move the anti-rebound portion relative to the coupling portion. In some embodiments, the tensioning mechanism may be configured to translate and / or rotate the anti-rebound portion relative to the coupling portion.

[0057] In some embodiments, the coupling portion is part of a coupling assembly. In some embodiments, the coupling assembly includes two connectors, such as coupling arms, which are optionally supported by a retaining structure and can move between an expanded position and a retracted position. In some embodiments, the connectors (such as coupling arms) are interconnected by a connecting device. In some embodiments, the connecting device is a rigid connecting member. In some embodiments, the two connectors are interconnected so that they can move as a whole or at least together, such as by applying a force to the connecting device.

[0058] In some embodiments, the coupling assembly is centrally driven and / or may include a driven portion force-transmittingly coupled to the connecting device. In some embodiments, the driven portion may be force-transmittingly coupled to a force output component of the tensioning mechanism. In some embodiments, the driven portion may include a toothed portion. In some embodiments, the driven portion may include a gear rack. In some embodiments, the force output component may include a gear engaged with the driven portion.

[0059] In some embodiments, the tensioning mechanism and / or the ratchet mechanism may include a torque limiting mechanism. The torque limiting mechanism may be provided in the aforementioned tightening force transmission path. The torque limiting mechanism may be configured to limit the transmittable torque to a predetermined maximum torque. In some embodiments, the operating component is forcefully coupled to the coupling portion via the torque limiting mechanism.

[0060] The torque limiting mechanism may include a first part coupled to the operating part in a force-transmitting manner. The torque limiting mechanism may include a second part coupled to the coupling part and / or the connector in a force-transmitting manner. The first part can be engageable with the second part in a torque-transmitting manner, for example, by tooth engagement. The first part and / or the second part can be movable to engage or disengage with the other part. The pushing member may bias at least one of the first part and the second part to engage with the other of the two parts. The first part and the second part may be configured so that the torque transmitted between them generates a urging force on at least one of the first part and the second part in a disengaging direction. If the force exceeds a predetermined force applied by the pushing member, the first part and the second part disengage, and the torque transmission is interrupted.

[0061] In some embodiments, the base includes a release mechanism. The release mechanism can be configured to release the coupling portion from the fixed structure, and / or can be configured to release the tensioning mechanism, and / or can be configured to release the movement of the coupling portion relative to the anti-rebound portion. The tensioning mechanism can be a ratchet tensioning mechanism. The tensioning mechanism can be a tensioning mechanism as previously described or as further described below. The tensioning mechanism can be configured to reduce the distance between the anti-rebound portion and the coupling portion.

[0062] In some embodiments, the release mechanism comprises at least one operating portion. The operating portion may be provided on the base so that it is accessible only when the child seat is removed from the base.

[0063] In some embodiments, the operating portion is provided on an upper surface portion of the base at a position covered by an inserted child seat. Additionally or alternatively, in some embodiments, the base may include a cover member that is movable between a covering position in which the cover member covers the operating portion and an exposed position in which the operating portion is accessible for operation. In some embodiments, the cover member is configured to move to the covering position when the child seat is inserted into the base.

[0064] In some embodiments, the release mechanism comprises two operating parts. In some embodiments, the release mechanism is configured such that the base can be released from the fixed structure only by actuating the two operating parts, in particular by actuating the two operating parts simultaneously or successively.

[0065] In some embodiments, the release mechanism is configured to release the coupling portion and the tensioning mechanism simultaneously. In some embodiments, the two operating portions may be provided on opposite sides of the main support portion. In some embodiments, each operating portion may comprise a lever.

[0066] In some embodiments, the operating component may include a coupling portion for force-transmittingly coupling the operating component to the coupling portion. In some embodiments, the coupling portion may be coupled to an end portion of the force-transmitting component. The force-transmitting component may be a Bowden cable. The force-transmitting component may be adjustable to allow adjustment of the force transmission from the operating component to the coupling portion.

[0067] In some embodiments, the release mechanism is configured such that, when the release mechanism is operated, the tensioning mechanism is deactivated by converting the tensioning mechanism into a free-wheeling state.

[0068] In some embodiments, the tensioning mechanism comprises an operating member that is forcefully coupled to the coupling portion via a ratchet mechanism, thereby allowing torque applied to the operating member to be transmitted only in the tensioning direction. In some embodiments, the release mechanism is configured to deactivate the ratchet mechanism by converting the ratchet mechanism into a free-rotation state.

[0069] In some embodiments, the ratchet mechanism includes a locking member configured to releasably lock the operating member to the output member of the ratchet mechanism so that the output member can move integrally with the operating member. The locking member can be a spring-loaded locking member. The output member can be an output shaft. In some embodiments, the output member includes a gear fixed to the output member so as to be rotatable integrally with the output member.

[0070] In some embodiments, the release mechanism may include a force transmission mechanism configured to convert the movement of the operating part into the movement of the locking member in the release direction, thereby releasing the lock between the operating part and the output member. The movement of the operating part may be a rotational movement of the operating part in the third rotational direction.

[0071] In some embodiments, the force transfer mechanism includes a force transfer component. The force transfer component may be configured to receive an actuation force from a force-applying portion of an operating component. The force transfer component may be configured to move toward the locking component upon receiving the actuation force. In some embodiments, the force transfer component includes a force-applying surface for contacting a force-receiving portion of the locking component. In some embodiments, the force-applying surface may be formed in the shape of an outer surface of a truncated cone to allow the force-receiving portion to interact with an operating component positioned at different angles.

[0072] In some embodiments, the force transfer member may be a sleeve extending around the pivot axis of the operating member. In some embodiments, the force transfer member may be slidably disposed on the output member.

[0073] In some embodiments, the force transmitting member includes a force receiving surface, and the force applying portion includes a force applying surface in contact with the force receiving surface. In some embodiments, the operating portion is configured to be rotatable about the pivot axis in a third rotational direction. In some embodiments, the force receiving surface and the force applying surface are configured such that the force transmitting member is displaceable in a displacement direction along the pivot axis by a wedge effect generated by sliding contact between the force applying surface and the force receiving surface.

[0074] In some embodiments, each operating part includes a lever. In some embodiments, the coupling part and the force application part of each operating part are integrally formed on the lever.

[0075] In some embodiments, the coupling portion is configured to automatically move to the extended position when movement of the coupling portion relative to the anti-rebound portion is released by a release mechanism.

[0076] In some embodiments, the coupling portion is biased in a direction away from the anti-rebound portion by an urging member. The urging member may be a coil spring.

[0077] In some embodiments, the coupling portion may be part of a coupling assembly. In some embodiments, the coupling assembly may include at least one connector, such as a coupling arm, supported on a retaining structure and movable between an expanded position and a retracted position. In some embodiments, at least one connector and a retaining structure are configured to releasably interlock for locking the coupling portion at a plurality of different locking positions on the retaining structure. In some embodiments, at least one connector includes a locking portion, and the retaining structure includes a receiving portion. The receiving portion may be a recess. In some embodiments, the locking portion may be configured to be releasably engageable with the receiving portion. In some embodiments, a release mechanism is configured to release the interlock between the connector and the retaining structure to allow the coupling portion to move relative to the anti-rebound portion.

[0078] In some embodiments, the coupling assembly includes two connectors, which are supported by a retaining structure, and each connector has a coupling portion. In some embodiments, the two connectors are mutually coupled by a connecting device. The connecting device can be a rigid connecting component. In some embodiments, the two connectors are mutually coupled so that they can move as a whole. In some embodiments, the pushing component is constructed and arranged to apply a pushing force to the connecting device.

[0079] In some embodiments, a connector for coupling a child restraint system to a vehicle seat is provided. The connector may be a connector of a coupling assembly described elsewhere in this specification. The connector may be a coupling arm. The connector may be a coupling arm configured for an isofix system.

[0080] In some embodiments, the connector includes a coupling portion disposed on the first end portion and configured to releasably lock with a fixed structure of the vehicle seat. The coupling portion may include one or more features described elsewhere in this specification. In some embodiments, the connector includes a locking portion spaced apart from the coupling portion in the longitudinal direction of the connector.

[0081] In some embodiments, the locking portion is arranged to be movable between a locking position and a release position, in which the locking portion protrudes from the outer side of the connector, and in which the locking portion does not protrude from the lateral outer side. For example, as described above, the locking portion can be configured to engage with the receiving portion of the retaining structure.

[0082] In some embodiments, the locking portion is arranged to be movable in translation. In some embodiments, the locking portion is movable in a direction transverse to the longitudinal direction.

[0083] In some embodiments, the locking portion is linearly movable between a release position and a locking position.

[0084] In some embodiments, the locking portion is linearly movable in a direction perpendicular to the longitudinal direction of the connector.

[0085] In some embodiments, the connector includes two locking portions, namely a first locking portion and a second locking portion. In some embodiments, the first locking portion includes a stop surface. In some embodiments, the stop surface of the first locking portion is oriented in a forward direction of the connector toward the coupling portion. In some embodiments, the second locking portion includes a stop surface. The stop surface of the second locking portion can be oriented in a rearward direction of the connector away from the coupling portion.

[0086] In some embodiments, the second locking portion is operably coupled to the coupling portion such that when the coupling portion is engaged with the fixed structure, the second locking portion is moved to the release position.

[0087] In some embodiments, the connector includes a release portion for manually moving the second locking portion to the release position independently of the coupled state of the coupling portion.

[0088] In some embodiments, the release portion may be an operating portion of the force transfer component. In some embodiments, the force transfer component may be linearly movable between a release position and an operating position along a longitudinal direction of the connector. In some embodiments, the force transfer component may include a force application portion configured to cooperate with the second locking portion such that when the force transfer component moves toward the operating position, the second locking portion is moved toward the release position.

[0089] In some embodiments, the force transfer component is arranged between the coupling portion and the second locking portion.

[0090] In some embodiments, each locking portion is biased towards the locked position by an urging member. The urging member may be a spring.

[0091] In some embodiments, two connectors may form a coupling assembly. In some embodiments, a coupling assembly with two connectors is provided for a child restraint system. The coupling assembly and / or the connector may include features described elsewhere in this specification. The coupling assembly may include two connectors. The coupling assembly may also include a connecting device. The connecting device may rigidly connect the two connectors to each other so that the two connectors can move as a whole.

[0092] In some embodiments, a base for a child restraint system is provided. The base may include features described elsewhere in this specification. In some embodiments, the base includes a retaining structure and a coupling assembly. The retaining structure may be constructed as described elsewhere in this specification. The coupling assembly may be supported on the retaining structure so as to be movable between an extended position and a retracted position. In addition, the coupling assembly may be releasably lockable in at least one of the extended position and the retracted position by releasably interlocking the retaining structure and the coupling assembly in a positive locking manner by means of a locking portion.

[0093] In some embodiments, the first locking portion and the second locking portion are respectively arranged on the first engagement member and the second engagement member, or can form a part of the first engagement member and the second engagement member. The first engagement member and the second engagement member can be formed identically. Therefore, there is no need to manufacture two different parts.

[0094] In some embodiments, the first locking portion and the second locking portion are configured to translate between a locked position and a released position.The first locking portion and the second locking portion may be mounted in the connector so as to be capable of translational movement along a linear path.

[0095] Each connector may include a housing. In some embodiments, the housing is formed by a first housing portion and a second housing portion. The first housing portion and the second housing portion may together form a hollow profile that defines an interior space for accommodating components for operating the coupling portion and for moving the first locking portion and the second locking portion. In some embodiments, the hollow profile formed by the first housing portion and the second housing portion may be closed on the rear side by a back cover. The back cover and the coupling portion may be disposed on opposite sides of the connector. The back cover and the coupling portion may be disposed on opposite longitudinal sides of the first housing portion and the second housing portion. The back cover may include a cable guide to allow the cable to pass therethrough so as to connect to the internal mechanism of the coupling assembly.

[0096] In some embodiments, a release portion for manually moving the second locking portion to the release position can be provided on the upper side of the connector near the coupling portion. The release portion can be slidably retained on the connector. The release portion can be operatively coupled to the second locking portion. The release portion can be constructed and arranged so that the second locking portion is moved into the release position by sliding the release portion away from the coupling portion.

[0097] In some embodiments, the second locking portion may be configured to prevent movement of the coupling portion in the retracted direction as long as the coupling portion is not blocked by a fixed structure. The release portion is configured to allow manual override of this function and can be used to manually move the second locking portion to the release position.

[0098] In some embodiments, the first locking portion and / or the second locking portion is biased towards the locking position by means of an urging member. The urging member may be a spring.

[0099] In some embodiments, the first engagement member and the second engagement member may each include a force receiving portion. The force receiving portion may include a cylindrical portion protruding from a lateral side of the engagement member.

[0100] The connector may include a first supporting portion configured to linearly guide the first engaging member. The first supporting portion may include a guide track formed as a straight groove extending in a vertical direction. The force-bearing portion of the first engaging member may be configured to extend through the guide track and extend into a force-applying portion provided in the actuating member. In some embodiments, the force-applying portion includes an opening, which is limited on the upper side by an inclined force-applying surface. In some embodiments, the force-applying surface is inclined so that it crosses the horizontal mid-plane of the connector at a front position of the first engaging member, for example, at a position between the first engaging member and the connecting portion. In this way, the movement of the actuating member in the longitudinal direction of the connector can be converted into the movement of the first engaging member along the guide track in a direction perpendicular to the longitudinal direction of the connector.

[0101] In some embodiments, the actuating component is arranged to be linearly movable along the longitudinal direction of the connector. In some embodiments, the actuating component is configured to transfer the operating force to the first engagement component. In some embodiments, the actuating component is operably connected to a release mechanism as described in other parts of this specification. In some embodiments, the actuating component is operably connected to a coupling portion. In some embodiments, operating the operating component causes the first locking component to retract into a release position and causes unlocking of the coupling portion. The actuating component can be operably connected to the release mechanism via a force transfer component. The force transfer component can be a Bowden cable. In some embodiments, as described in other parts of this specification, the actuating component is operably connected to a coupling portion of an operating component of the release mechanism.

[0102] In some embodiments, the child restraint system may include a display portion. In some embodiments, the display portion may be configured to provide centralized information about the status of the child restraint system. For example, centralized information about the installation status of the child restraint system may be provided. In some embodiments, the display portion is configured to present information in a spatial manner, allowing a user to directly spatially locate the portion of the child restraint system that is relevant to the displayed information. In this way, the spatial information and spatial relationships are easily understood by the user.

[0103] In some embodiments, the display portion is configured to present the information on a map showing the child restraint system. For example, the display portion may present the information on a map showing the base of the child restraint system, such as showing the entire base in a plan view or an outline view. In some embodiments, the information includes spatially related objects, facts, or processes, and the display portion is configured to graphically represent the related objects, facts, or processes in their spatial relationship.

[0104] In some embodiments, the display portion includes a map. For example, the display portion may include a map provided on the display portion in a graphical form. In some embodiments, the display portion includes at least one indicator provided at a predetermined position on the map. The predetermined position on the map may directly correspond to a position on the base.

[0105] In some embodiments, the display portion includes two indicators, each indicator indicating a connection state of a connector (eg, a connection arm) of the base.

[0106] In some embodiments, an indicator is configured to indicate the status of a load leg of the base. For example, at least one indicator may be configured to indicate whether the load leg is in a parked or stowed position, or in a deployed / use position.

[0107] In some embodiments, the display portion may include at least one indicator that indicates the insertion status of the child seat on the base.

[0108] In some embodiments, a child restraint system may include two connectors, namely a first connector and a second connector, each configured to be releasably locked with a fixed structure of a vehicle; and a display portion configured to provide information about the installation status of the connectors. The display portion may be configured to present at least four different locking states of the two connectors.

[0109] In some embodiments, the child restraint system may include a first sensor disposed in the first connector and a second sensor disposed in the second connector. In some embodiments, each of such first sensor in the first connector and such second sensor in the second connector is configured and arranged to monitor a locking state of the connector with a fixed structure on a vehicle seat. In some embodiments, the display portion is configured to present at least four different locking states of the two connectors mentioned above.

[0110] In some embodiments, a child restraint system may include a display portion configured to provide centralized information about the state of the child restraint system, and the display portion may include at least two lighting portions that indicate a predetermined state of the child restraint system. At least two of the lighting portions may be configured to be illuminated simultaneously by a single light source. The centralized information may include, for example, information about the installation state of the child restraint system. In addition, the display portion may also include features as described herein in connection with other different possible configurations of the display portion.

[0111] In some embodiments, the display device includes a beam splitter for splitting the light emitted by the light source and directing it to the illumination part.

[0112] In some embodiments, a seat detection sensor for detecting the presence of an inserted child seat is provided in a base for a child restraint system or in a base of a child restraint system. Other configurations of the base The base may be configured as described herein. In some embodiments, the seat detection sensor may be provided on a main support portion, for example, as described above, or as described below in specific configurations and aspects.

[0113] In some embodiments, the seat detection sensor may be disposed in the main support portion, such as in a receiving space inside the main support portion or in an upper portion of the main support portion.

[0114] In some embodiments, the sensor is a magnetic sensor, such as a Hall sensor. The magnetic sensor can detect the presence of a magnet in a child seat that is properly positioned on the base.

[0115] In some embodiments, a child seat is provided that can be mounted on a base. The child seat may include at least one sensor detectable feature. The sensor detectable feature may be a magnet or may include a magnet. In some embodiments, the sensor detectable feature may be disposed on a lower portion of the child seat. For example, the lower portion may be a support portion that defines a support surface for the child seat. The sensor detectable feature may be configured to trigger a seat detection sensor to detect the presence of the child seat on the base when the child seat is properly mounted and / or oriented on the base. As previously described, such a seat detection sensor may be disposed in a main support portion of the base.

[0116] In some embodiments, the child seat includes two sensor-detectable features located on a lower portion of the child seat. In some embodiments, each of the two sensor-detectable features includes a magnet. In some embodiments, the two sensor-detectable features are located on opposite sides of a center of rotation of the child seat. In addition, the two sensor-detectable features can be arranged at an equal distance from the center of rotation of the child seat. In this way, even if the child seat can be correctly installed on the base in two different orientations, the correct insertion of the child seat can be detected. In each of the two different orientations, a single sensor provided on the base can be configured and arranged on the base so that the two sensor-detectable features on the child seat can be detected in each of the two orientations of the child seat.

[0117] In some embodiments, a base for a child restraint system is provided. The base may include features described in conjunction with other configurations and aspects of the base described herein. In some embodiments, the base includes a locking mechanism for preventing an inserted child seat from rotating about a rotation axis. In some embodiments, the locking mechanism includes a locking member.

[0118] The locking member is movable between a locking position and a release position. In the locking position, the locking member is positioned to engage with a restraining portion of the child seat. In the release position, the locking member is in a position that cannot engage with the restraining portion of the child seat, so that rotation about the axis of rotation cannot be blocked by the locking member. In some embodiments, a sensor assembly is provided that is configured to at least detect the presence of the locking member in the release position.

[0119] In some embodiments, the sensor assembly may be configured to additionally detect the presence of the locking component in the locked position.

[0120] In some embodiments, the base includes a sensor detectable feature that is operably coupled to the locking component so as to be movable in accordance with movement of the locking component. The sensor detectable feature is movable between a first position corresponding to a locked position of the locking component and a second position corresponding to a released position of the locking component. In some embodiments, the sensor detectable feature is disposed on the locking component so as to be movable as a whole with the locking component. In some embodiments, the locking component may include a retainer for retaining the sensor detectable feature.

[0121] In some embodiments, the sensor assembly includes two sensors configured to detect a sensor detectable feature movably coupled to or disposed on the locking component. In some embodiments, the sensor assembly includes two sensors configured to detect a single sensor detectable feature. In some embodiments, the sensor assembly is configured to detect a triggering sequence of the sensors via the detectable feature. In some embodiments, a forced locking signal is output if a predetermined triggering sequence of the sensors is detected.

[0122] In some embodiments, the predetermined triggering sequence includes at least detecting the sensor-detectable feature by the second sensor while the sensor-detectable feature is still being sensed by the first sensor, and / or vice versa.

[0123] In some embodiments, the sensor detectable feature may include a magnet, and the sensor may be a magnetic sensor, particularly a Hall sensor.

[0124] In some embodiments, the sensors are arranged to allow a make before you break detection of a magnet.

[0125] In some embodiments, the locking member is movable to a backup position in which the locking member is positioned at the fully extended position. In some embodiments, the sensor is positioned so that only one sensor detects the sensor detectable feature in the backup position. In some embodiments, the locking position is between the fully extended position and the retracted position. In some embodiments, the fully extended position and the retracted position are fixed end positions that limit the range of movement of the locking member.

[0126] In some embodiments, the base may include a sensor assembly configured to detect the correct support of the child seat on the base. In addition, the sensor assembly may be configured to detect the correct orientation of the child seat on the base. If the correct support of the child seat and / or the correct orientation of the child seat is detected, a confirmation signal may be output.

[0127] In some embodiments, the confirmation signal includes illuminating the light source without changing the color of the light source.

[0128] In some embodiments, the base may include a main support portion, such as the main support portion described above. The main support portion may be configured to support the child seat rotatably around an axis of rotation. In addition, the base may also include a locking mechanism for locking the rotation of the child seat around the axis of rotation. The locking mechanism may include the features described above, or the features described later in combination with other configurations and aspects. In some embodiments, the base includes a seat detection sensor configured to at least detect the presence of a child seat. In some embodiments, the seat detection sensor is configured to detect the presence of a child seat on the main support portion and a predetermined permissible orientation of the child seat on the main support portion.

[0129] In some embodiments, the base includes a rotation lock sensor configured to detect whether rotatability of the child seat is blocked.

[0130] In some embodiments, the base may include a processing unit configured to receive signals from the seat detection sensor and the rotation lock sensor, and output a signal indicating whether the child seat is correctly or incorrectly installed on the base based on the signals received from the seat detection sensor and the rotation lock sensor.

[0131] In some embodiments, a child restraint system may include a base mountable on a vehicle seat. The base may include a bottom portion configured to contact a seat bottom of the seat.

[0132] In some embodiments, the base may include a load leg for supporting the base on the vehicle floor portion. In some embodiments, the load leg may be pivotally mounted on the base and may be moved between a stowed position and a deployed position. In the stowed position, the load leg is folded against the bottom portion. The stowed position may also be referred to as a parking position or non-use position of the load foot. The deployed position may also be referred to as a use position. In the deployed position, the load leg may be oriented to extend in an upward direction.

[0133] In some embodiments, the stowed position of the load legs can be detected by a magnetic sensor disposed on the base. In some embodiments, the deployed position of the load legs can be detected by a magnetic sensor disposed on the base. In some embodiments, both the stowed position of the load legs and the deployed position of the load legs can be detected by a magnetic sensor disposed on the base.

[0134] In some embodiments, the magnetic sensor may be a proximity detection type sensor. In some embodiments, the magnetic sensor may be a Hall sensor. In some embodiments, the magnetic sensor is disposed on the bottom portion.

[0135] In some embodiments, the load leg includes a free end portion configured to contact the vehicle floor portion. The free end portion may also be referred to as a foot. The free end portion may include a magnet. The magnet may be provided in the free end portion on a side of the load leg that is oriented toward the bottom portion when the load leg is in the stowed position.

[0136] In some embodiments, the magnetic sensor is covered by the magnetically attractable portion. For example, the magnetic sensor may be covered by a metal plate. In some embodiments, the magnetic attraction between the magnet and the magnetically attractable portion is strong enough to keep the load leg in the stowed position.

[0137] In some embodiments, the base includes a bottom portion configured to contact a seat bottom of a vehicle seat. In some embodiments, the base includes a load leg for supporting the base on a vehicle floor portion. In some embodiments, the load leg is pivotally mounted on the base and is movable between a stowed position in which the load leg is folded toward the bottom portion and a deployed position in which the load leg is capable of supporting the base on the vehicle floor portion.

[0138] In some embodiments, the child restraint system is configured so that the load-bearing leg can be releasably locked in the stowed position by magnetic attraction. For example, the base of the child restraint system or a base for the child restraint system can be configured so that the load-bearing leg can be releasably locked in the stowed position by magnetic attraction.

[0139] In some embodiments, the load foot includes a magnet. In some embodiments, the magnet is disposed in a free end portion of the load foot. In some embodiments, the base includes a magnetically attractable component, such as a steel plate.

[0140] In some embodiments, the proximity magnetic sensor may be arranged so that it is covered by the steel plate. In this way, the magnet includes a dual function: cooperating with the steel plate to generate an attractive force and being detectable by the magnetic sensor.

[0141] In some embodiments, a child restraint system may be provided that includes a base mountable on a vehicle seat. In some embodiments, the base may include a load leg. The load leg may be configured to support the base on a vehicle floor portion. The load leg may be pivotally mounted on the base at a coupling portion. The coupling portion may be provided at an upper end portion of the load leg. The load leg may be movable between a stowed position and a deployed position, in which the load leg is capable of supporting the base on the vehicle floor portion. The child restraint system may be configured to detect the deployed position of the load leg by a non-contact sensing assembly.

[0142] The contactless sensing component may include a magnetic sensor. The magnetic sensor may be a Hall sensor.

[0143] In some embodiments, the load leg may include a magnet supported in the coupling portion so as to be integrally rotatable with the load leg. In some embodiments, the magnetic sensor and the magnet are arranged such that the magnet passes the magnetic sensor when the load leg is rotated to the deployed position.

[0144] The load leg may be connected to the base body by a pivot pin. The load leg may be rotatable about the pivot pin between a stowed position and a deployed position. The load leg may include a coupling portion. The coupling portion may be connected to the base body by a pivot pin. The load leg may include a magnet supported in the coupling portion so as to be integrally rotatable with the load leg.

[0145] The magnetic sensor and the magnet may be arranged so that the magnet passes the magnetic sensor when the load leg is rotated to the deployed position. The distance between the pivot pin and the magnetic sensor may be greater than the distance between the pivot pin and the magnet. In some embodiments, when the load leg is rotated to the deployed position, the magnet moves to an area between the pivot pin and the magnetic sensor. The magnet may be held by a magnet holder on the load leg. The magnet may be held in a middle portion of the coupling portion of the load leg.

[0146] In some embodiments, the child seat may include a support structure and a seat structure supported on the support structure. The seat structure may include a seat bottom and a seat back. The seat structure may be configured to be convertible between a seated configuration and a lie-flat configuration.

[0147] In some embodiments, the seat back is configured to pivot relative to the support structure about a fixed pivot axis. For example, the seat back can be pivotally coupled to the support structure via a first pivot connector, wherein the first pivot connector defines a fixed pivot axis. The pivot connector can be a pivot pin.

[0148] In some embodiments, the seat bottom can be configured to pivot about a movable pivot axis. For example, the seat bottom can be configured to pivot about a second pivot connector guided along a predetermined path. The movable pivot axis can move relative to the support structure along a predetermined path when the seat structure is converted between the seated configuration and the lie-flat configuration.

[0149] In some embodiments, the predetermined path is configured such that the movable pivot axis at least temporarily moves in an upward direction relative to the support structure when the seat structure transitions between the seating configuration and the lie-flat configuration.

[0150] In some embodiments, the predetermined path is a curved path. In some embodiments, the predetermined path is a circular path.

[0151] In some embodiments, the second pivot connector is supported on the support structure by a lever. The lever can be coupled to the support structure by a third pivot connector. In some embodiments, the third pivot connector couples the lever to the support structure at a position below the second pivot connector. In some embodiments, the lever is secured to the support structure in a pendulum-like manner. In some embodiments, the lever is secured to the support structure such that an end portion of the lever is secured to the support structure at a position above the second pivot connector.

[0152] In some embodiments, the pivot axes extend parallel to each other.

[0153] In some embodiments, the seat bottom is hingedly coupled to the seat back via a fourth pivot connector. The fourth pivot connector may couple the seat bottom and the seat back at a distance from a lower seating surface on the seat bottom and at a distance from a backrest surface of the seat back. In some embodiments, the distance is configured so that the fourth pivot connector is substantially at the natural hip level of a seated child.

[0154] In some embodiments, the second pivot connector can be coupled to the seat bottom at a middle portion of the seat bottom, e.g., substantially midway between the seat bottom front end and the seat bottom rear end. In some embodiments, the seat bottom can be hingedly coupled to the seat back at a rear end portion of the seat back.

[0155] In some embodiments, an operating portion is provided on the lower portion of the seat bottom, the operating portion being configured to receive a pulling force applied thereto by a user. In some embodiments, the operating portion may be constructed and arranged so that when the seat structure is in the seated configuration, the pulling force applied thereto acts in a pulling direction that is substantially perpendicular to the movable pivot axis and extends substantially tangentially to the predetermined path.

[0156] In some embodiments, the child seat may include an interface portion for locking the child seat to a base that can be fixedly mounted on a vehicle seat, such as the interface portion and base described elsewhere in this specification. The interface portion can be disposed on a support structure for the child seat. In addition, the seat structure can be supported on the support structure and can be configured to be convertible between a seated configuration and a lay-flat configuration. For example, the seat structure can be configured as described elsewhere in this specification.

[0157] In some embodiments, the child seat is configured so that when the interface portion is supported on the base and the child seat is oriented in a predetermined orientation, such as a forward-facing orientation or a rearward-facing orientation, the convertibility between the seated configuration and the flat-lying configuration is suspended. The predetermined orientation may generally be an orientation in which a seated child can be safely transported. In other words, the predetermined orientation may be an orientation in which the child seat is required to be oriented during travel of a vehicle in which the child seat is installed.

[0158] In some embodiments, the child seat may include a locking mechanism for locking the seat structure in the seated configuration and the lie-flat configuration. In some embodiments, the locking mechanism includes an operating component for temporarily unlocking the locking mechanism. In some embodiments, the child seat is configured so that when the interface portion is supported on the base and the child seat is oriented in a predetermined direction (e.g., a predetermined direction of travel including a forward-facing direction and / or a rearward-facing direction), unlocking of the locking mechanism is prevented.

[0159] In some embodiments, the operating components are disposed on the child seat such that the operating components are not accessible to a user when the interface portion is supported on the base and / or the child seat is oriented in a predetermined orientation, such as in a forward facing orientation and / or a rearward facing orientation.

[0160] In some embodiments, the interface portion includes a restraint portion that is received in the secondary support portion of the base when the child seat is supported on the base and / or oriented in a predetermined direction. The secondary support portion can be constructed as described elsewhere in this specification. The interface portion can also be constructed as described elsewhere in this specification.

[0161] In some embodiments, the operating component is disposed on the child seat adjacent to the restraint section. In some embodiments, the operating component is disposed on the child seat adjacent to the front restraint section. In some embodiments, the operating component is disposed at a predetermined position above the restraint section. In some embodiments, the operating component is disposed such that, when the child seat is supported on the base and oriented in a predetermined direction, the operating component is covered by at least a portion of the base. For example, the operating component may be covered by a portion of a secondary support portion as described herein elsewhere in this specification.

[0162] In some embodiments, the child seat comprises a seat bottom and a seat back. In some embodiments, the operating component is arranged on the lower front end portion of the seat bottom. Like this, the user just can approach the operating component from the front end of the child seat.

[0163] In some embodiments, a child restraint system is provided. The child restraint system may include a child seat as described above, and a base that can be mounted on a vehicle seat and is configured to support the child seat. The child seat may include an interface portion that is releasably coupled to the base. The interface portion may be constructed as described herein elsewhere in this specification.

[0164] In some embodiments, the child seat includes a locking mechanism for locking the seat structure in the seated configuration and the lie-flat configuration. In some embodiments, the locking mechanism includes an operating component for temporarily unlocking the locking mechanism. In some embodiments, the child seat and the base are configured such that when the interface portion is supported on the base and the child seat is oriented in a predetermined orientation, such as in a forward facing orientation and / or a rearward facing orientation, unlocking of the locking mechanism is blocked.

[0165] In some embodiments, the child seat includes at least one restraint portion. The base may include at least one secondary support portion configured to receive the restraint portion of the child seat, such as by rotating the child seat about a rotation axis. In some embodiments, the secondary support portion is configured so that an operating component on the child seat is covered by a portion of the secondary support portion. This portion of the secondary support portion may be a portion of the secondary support portion that protrudes in a space defined by an upper portion of the restraint portion and a lower front end portion of the seat bottom.

[0166] In some embodiments, a child seat is provided, the child seat having a support structure, a seat structure convertible between a seated configuration and a flat-lying configuration, and a locking mechanism for locking the seat structure in the seated configuration and the flat-lying configuration. The locking mechanism includes an operating component for temporarily unlocking the locking mechanism. In addition, the operating component is provided at the lower front end portion of the seat bottom. The support structure, the seat structure, and the locking mechanism can be constructed as described herein and in other parts of this specification.

[0167] In some embodiments, a locking mechanism is provided for locking the seat structure in a seated configuration and / or a lie-flat configuration. Such a locking mechanism may include features described herein in other parts of this specification, or may also be arranged as described herein in other parts of this specification. The locking mechanism may be configured to be used in conjunction with a seat structure supported on a support structure, in particular so that a seat backrest of the seat structure is configured to pivot about a fixed pivot axis defined by a first pivot connector. The locking mechanism may be configured to establish engagement between the seat structure and the support structure in a direction transverse to the fixed pivot axis.

[0168] In some embodiments, the locking mechanism is configured to establish engagement in a radial direction relative to the fixed pivot axis.

[0169] In some embodiments, the locking mechanism includes an engagement portion configured to move between a locked position and an unlocked position. In some embodiments, the engagement portion may be provided on the seat back. In some embodiments, the engagement portion may be arranged to be capable of linear movement, for example, in a radial direction or parallel to a radial direction relative to a fixed pivot axis, for example, perpendicular to the fixed pivot axis and optionally offset from the fixed pivot axis. In some embodiments, the engagement portion may be arranged to be capable of movement substantially perpendicular to a resting surface portion of the seat back. In some embodiments, the engagement portion is configured to move in a direction having a rearward direction component and a downward direction or component.

[0170] In some embodiments, the support structure includes at least two recesses for receiving the engagement portion. In some embodiments, the locking mechanism includes an operating component that is operably coupled to the engagement portion. The operating component may be provided on the seat bottom. The operating component may be an operating component as described elsewhere in this specification.

[0171] In some embodiments, a child seat including a belt receiving portion may be provided. The belt receiving portion may be configured to receive a seat belt portion of a vehicle seat so as to mount the child seat to the vehicle seat. In some embodiments, the child seat includes a blocking portion configured to move between a blocking position and a release position. In the blocking position, the belt portion is blocked from being inserted into the belt receiving portion. In the release position, the belt portion is allowed to be inserted into the belt receiving portion. In some embodiments, the blocking portion is configured to at least partially surround a wall portion of the belt receiving portion when the blocking portion is positioned in the blocking position.

[0172] In some embodiments, the blocking portion includes a receiving recess for receiving the wall portion.

[0173] In some embodiments, the recess is provided in a free end portion of the blocking member.

[0174] In some embodiments, the free end portion comprises a stepped configuration. In some embodiments, the free end portion may comprise an L-shape.

[0175] In some embodiments, the belt receiving portion includes an insertion section and a receiving section. In some embodiments, the receiving section can be configured to support the inserted belt portion across its entire width. In some embodiments, the size of the insertion section is smaller than the size of the receiving section. In some embodiments, the blocking portion is constructed and arranged so that when it is positioned in the blocking position, it partially extends through the receiving section into the insertion section.

[0176] In some embodiments, the blocking portion is configured to at least partially protrude from below into the belt receiving portion when it is in the blocking position.

[0177] In some embodiments, the child seat includes a seat structure with a seat bottom and a seat back. The seat structure can be configured to be convertible between a sitting configuration and a lying flat configuration. The blocking portion can be operably coupled to the seat structure. In particular, the blocking portion can be operably coupled to the seat structure so that when the seat structure is converted to the lying flat configuration, the blocking portion is moved to the blocking position, and when the seat structure is converted to the sitting configuration, the blocking portion is moved to the release position.

[0178] In some embodiments, the seat back includes a force-applying portion, and the blocking portion includes a force-receiving portion. The force-receiving portion may be coupled to the force-applying portion. For example, the force-receiving portion may be slidably retained on the force-applying portion. The blocking portion may be guided along a predetermined path. For example, the blocking portion may be guided along a straight path or a curved path. In some embodiments, the predetermined path may extend in an upward direction, such as in a vertical upward direction. In some embodiments, the predetermined path may be defined in a support structure of the child seat. For example, a groove may be provided in the support structure for defining the predetermined path. In some embodiments, the support structure includes a belt receiving portion. In some embodiments, the support structure is configured to at least rotatably support the seat back. In some embodiments, the force-applying portion includes a groove, and the force-receiving portion may be slidably received in the groove.

[0179] In some embodiments, the child seat may include a handle. The child seat may be a child seat as described herein in other parts of this specification. In particular, the child seat may be a child seat for an infant. The handle is configured to carry the child seat.

[0180] In some embodiments, the handle includes a main gripping portion configured for carrying the child seat with one hand. The main gripping portion may extend in a first direction, for example, in a horizontal direction of the child seat.

[0181] In some embodiments, the handle includes two dedicated secondary gripping portions configured to carry the child seat with both hands. The two dedicated secondary gripping portions may extend in a second direction, for example transverse to the first direction along which the primary gripping portion may extend as described above.

[0182] In some embodiments, the secondary gripping portion is disposed on the handle such that they are located at the same level. In some embodiments, the handle comprises a U-shape having a base portion and two leg portions extending from the base portion. In some embodiments, free end portions of the leg portions are coupled to the support structure. Each leg portion may comprise one of the secondary gripping portions.

[0183] In some embodiments, the secondary gripping portion includes a shape deviation portion in the handle surface. The shape deviation portion may include a local shape deviation to prevent the handle from slipping through the user's hand when the user uses the secondary gripping portion to carry the child seat. The shape deviation portion may include a protrusion that limits the upper portion of the gripping area. The shape deviation portion may include an uneven surface, such as a surface formed by corrugations, grooves and / or indentations.

[0184] In some embodiments, the secondary gripping portion comprises a material deviation in the surface of the handle. The material deviation may be configured to increase friction between a user's hand and the handle, and may comprise a rubber material.

[0185] In some embodiments, the child seat may include a locking mechanism for releasably locking the child seat to a coupling interface of a support unit, such as a base or chassis of a carrier (e.g., a stroller) for supporting the child seat on a vehicle seat. The locking mechanism may include an operating component for temporarily unlocking the locking mechanism. The secondary gripping portion of the handle is positioned on the handle so that the user can operate the operating component with the hand currently gripping the secondary gripping portion. In some embodiments, the operating component and the handle are configured so that the operating component can be operated by the user by hand when the user holds the handle with both hands.

[0186] In some embodiments, the handle is arranged to be rotatable between a carrying position and a non-carrying position. The secondary grip portion may be arranged on the handle so that when the handle is in the carrying position, the user can operate the operating component with the thumb of the hand while grasping the secondary grip portion with the fingers of the hand. In some embodiments, the secondary grip portion is arranged on the handle so that when the handle is in the carrying position, adjacent operating components or operating portions of the operating components are positioned on the same horizontal plane as the secondary grip portion.

[0187] In some embodiments, the child seat may include a seating structure. In some embodiments, the seating structure may include a bottom portion and a backrest portion. In some embodiments, the child seat may be configured as a toddler seat.

[0188] In some embodiments, the child seat may include a harness assembly. The harness assembly is configured to restrain a child seated in the child seat. The harness assembly may include shoulder straps for restraining the seated child. The harness assembly may include a buckle component coupled to the shoulder straps so that it can move along the shoulder straps. The buckle component may be configured to engage with a receiver coupled to the bottom portion in an area that allows the receiver to be placed between the legs of a seated child.

[0189] In some embodiments, the child seat may include a headrest assembly for supporting the head of a sitting child. The headrest may be height-adjustable. The headrest assembly may include a supporting structure. The headrest assembly may include a headrest portion. The supporting structure may be configured to support the headrest portion. The headrest portion is configured to support the child's head and is arranged between the supporting structure and the head of the sitting child. The headrest portion may be made of a material with lower rigidity than the material of the supporting structure. For example, the headrest portion may include or be made of polyphenylene ether (PPE) or expanded polypropylene material (EPP). Therefore, the headrest assembly may include at least two components, including a supporting structure and a headrest portion.

[0190] The support structure may be made of a hard plastic material. The support structure may provide reinforcement for the material of the headrest portion supported thereon. The headrest portion may be formed integrally from a single material. The support structure may include or be made of a polypropylene (PP) material. The support structure may include a reinforcing structure. The reinforcing structure may include ribs. The support structure may include a coupling portion. The coupling portion may be configured to be coupled to a backrest of a child seat. The coupling portion may include a belt opening for passing a shoulder strap of a harness assembly therethrough. The coupling portion may be constructed and arranged to support the support structure together with the headrest portion at a predetermined distance from the backrest portion.

[0191] The backrest portion may include a right shoulder support portion and a left shoulder support portion. On an upper portion of each of the right shoulder support portion and the left shoulder support portion, a headrest may be provided. The coupling portion and the support structure are configured such that a rear side and / or an outer side of the support structure maintain a predetermined distance from a headrest contact surface. The headrest contact surface provides a support surface on the backrest portion of the child seat. More specifically, in the event of a collision, a force acting on the child seat may force the headrest to move toward the backrest portion and contact the backrest portion at the headrest contact surface.

[0192] On the outside of the support structure, an outer support surface can be provided, which is configured to contact the headrest contact surface. The outer support surface can extend from the lateral head support portion of the headrest assembly to the rear portion of the headrest assembly. The outer support surface and the headrest contact surface can be configured so that they extend substantially parallel to each other. Therefore, in some configurations, the distance between the outer support surface and the headrest contact surface can be substantially constant along the extension direction of each surface, at least substantially constant on a predetermined section. In this way, appropriate support of the support surface on the child seat backrest in the event of a collision is provided. The headrest contact surface can be provided as a protrusion compared to the adjacent area on the shoulder support portion of the child seat. In other words, the headrest contact surface can be provided on the following portion of the backrest, which extends more into the interior of the seat to support the movement of the headrest caused by a side impact.

[0193] In some embodiments, the child seat is configured so that the shoulder strap portion of the tether assembly can be temporarily attached to the headrest assembly.

[0194] In some embodiments, the child seat is configured so that the shoulder strap portion can be attached to the head restraint assembly by magnetic attraction.

[0195] In some embodiments, the headrest assembly includes a support structure, such as the support structure described above, and a cover component, such as a cover component made of fabric. In some embodiments, the support structure may include a magnet. In some embodiments, the cover component may include a magnet. In some embodiments, the headrest portion may include a magnet. In some embodiments, the magnet is provided on the front portion of the headrest assembly. In some embodiments, the magnet is provided on the lateral head support portion of the headrest assembly. For example, the magnet may be provided on the inner side of the headrest assembly, such as on or in the inner support surface. The magnet may be provided on the outer side of the front portion of the headrest assembly, such as in the outer portion at the front end portion of the lateral head support portion. In some embodiments, the magnet is provided on the bottom side of the front portion of the headrest assembly. In some embodiments, each lateral head support portion may include a magnet on the outer side. In some embodiments, the magnet is arranged in the support structure of the headrest assembly, such as at the front end portion of the support structure provided in the lateral head support portion. In some embodiments, the support structure may include a retaining portion for accommodating the magnet. In some embodiments, the retaining portion includes a recess for receiving the magnet. In some embodiments, the retaining portion is integrally formed in the support structure of the headrest assembly.

[0196] In some embodiments, the shoulder strap portion includes a magnetically attractable portion. Such a magnetically attractable portion may be provided in the shoulder strap portion, for example sewn into the shoulder strap portion. The magnetically attractable portion may be a steel insert. The magnetically attractable portion may alternatively be provided on a separate component mounted on the shoulder strap.

[0197] In some embodiments, the shoulder strap portion includes a buckle component. In other words, a buckle component can be provided on the shoulder strap. Such a buckle component can be provided to be movable on the shoulder strap and to the shoulder strap portion which should be temporarily attached to the headrest assembly. The buckle component can include a buckle tongue. The buckle tongue can also be referred to as a latch, since the function of the buckle tongue is to fixedly connect the buckle component to a receiver provided on the bottom portion of the child seat in an area between the legs of a sitting child. In some embodiments, the buckle tongue forms a magnetically attractable portion. Thus, the buckle component can be retained on the headrest assembly by placing the buckle tongue within the range of action of a magnet provided in the headrest assembly. The buckle tongue can be made of steel.

[0198] In some embodiments, the child seat may include a first interface portion and a second interface portion. The child seat may include the functions described herein in other parts of this specification. The first interface portion may be configured to releasably engage with a first type of connection interface. The first type of connection interface may be, for example, a connection interface provided on a child carrier such as a stroller. For example, the connection interface may be provided on a stroller chassis. The second interface portion may releasably engage with a second type of connection interface. The second type of connection interface may include a connection interface configured to be fixed to a base on a vehicle seat. The second interface portion may be an interface portion configured to be connected to a main support portion described herein in other parts of this specification. The second type of connection interface may include a main support portion described herein in other parts of this specification.

[0199] In some embodiments, the child seat includes an operating mechanism configured to simultaneously operate the first interface portion and the second interface portion. The operating mechanism may be configured to simultaneously operate the first interface portion and the second interface portion so as to convert the interface portion into a released state. The released state may be a state in which the interface portion is in an unlocked state.

[0200] In some embodiments, the first interface portion includes a rotational locking mechanism. In the present disclosure, a rotational locking mechanism should be understood as a locking mechanism that establishes locking and unlocking through rotational movement. In some embodiments, the second interface portion includes a translational locking mechanism. In the present disclosure, a translational locking mechanism should be understood as a locking mechanism that establishes locking and unlocking through translational movement.

[0201] In some embodiments, the operating mechanism is configured to convert a rotational input force into a rotational movement in the rotational locking mechanism and a translational movement in the translational locking mechanism.

[0202] In some embodiments, the rotation locking mechanism includes a rotationally movable locking component. In some embodiments, the rotationally movable locking component may include an engagement portion. In some embodiments, the engagement portion may include a hook. In some embodiments, the rotationally movable locking component includes a force-bearing portion for receiving an actuation force. In some embodiments, the rotationally movable locking component may be configured as a lever. In some embodiments, the lever may be rotatably mounted on the child seat via a pivot connector. In some embodiments, the pivot connector may define a lever pivot axis. In some embodiments, the engagement portion and the force-bearing portion may be arranged on opposite sides of the pivot connector. In some embodiments, the force-bearing portion may be configured to slide in contact with the force-applying portion. In some embodiments, the force-bearing portion may be configured to receive a return force from a return spring. In some embodiments, the force-bearing portion may be configured to slide in contact with the force-applying portion on one side, and / or may be configured to receive a return force from a return spring on the opposite side.

[0203] In some embodiments, the translational locking mechanism includes a translationally movable engagement portion. In some embodiments, the translationally movable engagement portion may be or may include a locking component. In some embodiments, the engagement portion may be arranged to be movable radially into and out of a recess of the second interface portion. In some embodiments, the recess may be provided in a bottom portion of the second interface portion. In some embodiments, the recess may extend in a first direction, the first direction extending in a direction opposite to the insertion direction of the child seat on the second type of connection interface. In some embodiments, the recess may be configured to receive a main support portion protruding from the base in a first direction. The main support portion and / or the base and / or the engagement portion may be configured as described in other parts of this specification.

[0204] In some embodiments, the operating mechanism includes an operating component. The operating component can be force-transmittedly coupled to the first interface portion. The operating component can be force-transmittedly coupled to a rotationally movable locking component. In some embodiments, the operating component can be force-transmittedly coupled to the second interface portion. In some embodiments, the operating component can be force-transmittedly coupled to an engagement portion of the second interface portion. The engagement portion of the second interface portion can be or can include a locking component. In some embodiments, the operating component is force-transmittedly coupled to the first interface portion and the second interface portion. In some embodiments, the operating component is force-transmittedly coupled to a rotationally movable locking component and a translationally movable coupling component.

[0205] In some embodiments, the operating component is force-transmittingly coupled to the second interface portion via a force transfer component. Therefore, the operating mechanism may include a force transfer component. In some embodiments, the force transfer component may be configured to transfer the pulling force to the second interface portion. In some embodiments, the force transfer component may be a flat component. In some embodiments, the flat component may include a band-like structure. In some embodiments, the flat component may include a substantially rectangular cross-section. In some embodiments, the flat component may be configured to transfer only the pulling force to the second interface portion. In some embodiments, the flat component cannot transfer the pushing force to the second interface portion.

[0206] In some embodiments, the force transfer component is coupled to the engagement portion at at least two locations. In some embodiments, the force transfer component is coupled to the engagement portion on laterally opposite sides of the engagement portion such that a total force applied to the force transfer component is distributed to at least two of the at least two locations.

[0207] In some embodiments, the force transfer component may include a branch end portion. In some embodiments, each force transfer component includes a branch end portion. In some embodiments, the branch end portion includes a first branch portion and a second branch portion. The first branch portion may be connected to the engaging portion at a first position, and the second branch portion may be connected to the same engaging portion at a second position. In some embodiments, the first position and the second position may be offset from each other in a direction perpendicular to the moving direction of the engaging portion. In some embodiments, the first position and the second position may be offset from each other laterally in a direction perpendicular to the moving direction of the engaging portion. In some embodiments, the branch end portion may be formed as an integral component, for example, made of plastic or metal. In some embodiments, the branch end portion may be connected to a single engaging portion. In some embodiments, the branch end portion forms a Y-shaped branch. The Y-shaped branch may be configured so that the first branch portion and the second branch portion extend substantially symmetrically from the end of the central portion.

[0208] In some embodiments, the force transfer component is supported on a support structure of the child seat. In some embodiments, the force transfer component is supported only on one side. In some embodiments, the force transfer component is slidably supported on the support structure. In some embodiments, the force transfer component is slidably supported on the support structure by contacting the surface of one or more support portions provided on the support structure. In some embodiments, one or more support portions may be curved. In some embodiments, one or more support protrusions are integrally formed in the support structure. In some embodiments, the first branch portion and the second branch portion are slidably supported on different support portions. In some embodiments, the force transfer component may be configured so that it is supported on the support structure only by the branch portions. In some embodiments, the support structure includes two support portions. Each support portion may be assigned to a single branch portion. Each support portion may be configured to support a single branch portion.

[0209] In some embodiments, the operating mechanism includes an operating component. The operating component may be configured to rotate upon receiving a pushing force applied by a user. In some embodiments, the operating component may be configured to be operated by a user's thumb. In some embodiments, the operating component is hingedly connected to a support structure of a child seat, for example, via a pivot connector. In some embodiments, the operating component includes a lever. In some embodiments, the lever may be hingedly connected to a support structure of a child seat at a first end portion. In some embodiments, the lever may include an operating portion located at a second end portion. In some embodiments, the operating portion protrudes from the support structure through an opening. In some embodiments, the pivot connector defines a pivot axis. In some embodiments, the pivot connector may be configured so that the defined pivot axis extends substantially parallel to a linear movement direction of the engaging portion. In some embodiments, the pivot axis may be configured to extend obliquely to the linear movement direction of the engaging portion.

[0210] In some embodiments, the operating component includes an operating surface for receiving an operating force from a user. In some embodiments, the operating surface may extend perpendicular to an upper edge of the support structure. In some embodiments, the operating surface may be configured to receive an operating force in a direction tangential to the upper edge of the support structure.

[0211] In some embodiments, the operating component is movable between a locked position and a released position. The locked position may be a position where the operating portion of the operating component extends in a substantially vertical direction on the child seat. The released position may be a position where the operating component is rotated about a predetermined angle from the locked position. In some embodiments, the locked position may be a forward position of the operating component on the child seat, and the released position may be a rearward position of the operating component of the child seat.

[0212] In some embodiments, the operating component may include a force application portion. In some embodiments, the force application portion is configured to contact the intermediate force transfer component. In some embodiments, the force application portion is disposed between the first end portion and the second end portion of the operating component. In some embodiments, the force application portion includes a protrusion. In some embodiments, the extension direction of the protrusion is transverse to an imaginary line extending through the first end portion and the second end portion of the operating component. In some embodiments, the protrusion extends in a rearward direction of the child seat. In some embodiments, the protrusion is defined by a curved portion provided in the operating component. The curved portion may be formed so that when the operating component is in a locked position, it extends around the rotation center of the backrest portion of the child seat. In some embodiments, the force application portion includes a contact surface facing rearward, which is configured to slide in contact or make sliding contact with the force transfer component.

[0213] In some embodiments, the operating mechanism may include an intermediate force transmission component. The intermediate force transmission component may be configured to receive a force from the operating component and distribute the received force to the force transmission component and the rotatably movable locking component. In some embodiments, the intermediate force transmission component may be configured as a lever. In some embodiments, the lever includes a first arm portion and a second arm portion. The first arm portion and the second arm portion may extend at an angle relative to each other. The first arm portion and the second arm portion may extend from different sides of the pivot portion of the intermediate force transmission component. The pivot portion may be rotatably connected to the support structure of the child seat by a pivot connector. In some embodiments, the intermediate force transmission component may include a force receiving portion for receiving a force from the operating component. In some embodiments, the force receiving portion may form an upper portion of the intermediate force transmission component. In some embodiments, the force receiving portion may extend upward from the pivot connector. In some embodiments, the force receiving portion may include a first contact surface. In some embodiments, the force receiving portion may include a second contact surface. In some embodiments, the first contact surface and the second contact surface may be provided on opposite sides of the intermediate force transmission component. In some embodiments, the first contact surface is configured to slide in contact with the force application portion of the operating component. In some embodiments, the second contact surface is configured to slide in contact with the force receiving portion of the rotatably movable locking component. In some embodiments, the intermediate force transfer component is pivotally coupled to the force transfer component. For example, the intermediate force transfer component may be pivotally coupled to the force transfer component at the second arm portion. The force receiving portion may be provided on the first arm portion of the lever.

[0214] In some embodiments, the operating member, the intermediate force transfer member and the rotationally movable locking member may be pivotable about respective pivot axes. In some embodiments, the pivot axes may extend parallel to each other. In some embodiments, when the operating member is in the locked position, the connection point at which the second arm portion is connected to the force transfer member is located within an imaginary triangle formed by connecting the pivot axes in a plane perpendicular to the pivot axes.

[0215] In some embodiments, a cover for a child seat is provided. The child seat may be a toddler seat. In some embodiments, the cover includes a flexible cover portion and a fastening portion. The flexible cover portion may be configured to cover at least an outer portion of a seat structure. The flexible cover portion may include a cover edge portion. In some embodiments, the fastening portion is configured to couple the cover edge portion to the seat structure. In some embodiments, the fastening portion is coupled to the cover edge portion, and the fastening portion is configured to contact the surface of the flexible cover portion at a position inward of the cover edge portion when the fastening portion is coupled to the child seat.

[0216] In some embodiments, the fastening portion includes a base portion. In some embodiments, the base portion includes a cover portion support surface. In some embodiments, the cover portion support surface may extend between a front portion and a rear portion of the base portion. In some embodiments, the cover edge portion may be fixedly coupled to the front portion at a fixed section of the cover edge portion. For example, the cover edge portion may be fixedly coupled to the front portion so that the flexible cover portion extends along the cover portion support surface. In some embodiments, the cover portion support surface may form an outer surface of the base portion.

[0217] In some embodiments, the fastening portion includes a support assembly.The support assembly may be configured to support the base portion on the seat structure in a predetermined orientation.

[0218] In some embodiments, the support assembly is configured to support the base portion on the seat structure such that the cover portion support surface at least partially enlarges the outer surface area of ​​the outer portion. In some embodiments, the outer surface area faces laterally away from the seat structure.

[0219] In some embodiments, the support assembly is configured to support the base portion on the seat structure such that the cover portion support surface extends at least partially beyond an edge portion bounding an outer surface area of ​​the outer portion.

[0220] In some embodiments, the support assembly is configured to support the base portion on the seat structure such that a front portion of the securing section including the cover edge portion is at least partially spaced apart from an edge portion bounding an outer surface area of ​​the outer portion.

[0221] In some embodiments, the support assembly includes a support protrusion protruding from the base portion. In some embodiments, the support protrusion may protrude from the inner surface of the base portion. In some embodiments, the inner surface and the cover portion support surface may be arranged on opposite sides of the fastening portion. In some embodiments, the support protrusion may be formed as a continuous rib. In some embodiments, the support protrusion may include a support surface that is suitable for contacting the support protrusion on the seat structure. In some embodiments, the support surface and the support protrusion may be configured to make surface contact with each other. In some embodiments, the support surface may include a planar contact surface that is configured to contact the support surface on the support protrusion.

[0222] In some embodiments, the front portion includes an outer surface and an opposite inner surface. In some embodiments, the cover edge portion may be arranged on the outer surface. In some embodiments, the cover edge portion may be wrapped around the front portion to surround the front portion. The edge of the cover portion may be arranged on the inner side of the fastening portion.

[0223] In some embodiments, the fastening portion is configured to hold the cover portion on the seat structure so as to provide a substantially seamless transition from the cover portion to the rear cover of the child seat. The rear cover of the child seat may be formed in a shell-like manner. The rear cover may form a hard shell portion.

[0224] In some embodiments, the front portion can be adapted to the shape of the rear cover, for example, to the shape of a rear cover edge portion of the rear cover, so that when the fastening portion is installed on the seat structure, the front portion can enter a position inside the rear cover, in which position the front portion overlaps the rear cover, so that the cover portion extends into the rear cover through the rear cover edge portion.

[0225] In some embodiments, the front portion is disposed on the base portion offset relative to the cover portion support surface. In some embodiments, a transition portion, such as a step, may be provided between the front portion and the cover portion support surface. In some embodiments, the transition portion may limit the cover portion support surface and may be adapted to follow the contour of the rear cover edge portion. In some embodiments, the fastening portion is configured such that the cover portion is supported on the cover portion support surface, wherein the outer surface of the cover portion is arranged flush with the outer surface of the rear cover edge portion, and / or such that the cover portion is supported on the front portion, wherein the outer surface of the cover portion is maintained between the front portion and the rear cover edge portion, for example, sandwiched between the front portion and the rear cover edge portion.

[0226] In some embodiments, the fastening portion is configured to only partially close the gap formed between the outer portion and the rear cover on the child seat, while holding the cover portion so that the opening defined between the rear cover, the outer portion and the fastening portion (particularly the upper portion of the fastening portion mounted on the seat) is covered by the cover portion. In some embodiments, the opening comprises a size that allows a user to pass a finger through the opening while deforming the cover portion covering the opening.

[0227] In some embodiments, the fastening portion is configured to be coupled to the child seat using an insertion motion including a twist-push motion, and / or may be configured to be disconnected from the child seat by a disconnection motion including a twist-pull motion.

[0228] In some embodiments, the fastening portion may be non-destructively and detachably mounted on the child seat.

[0229] In some embodiments, the fastening portion comprises a higher stiffness than the flexible cover portion.

[0230] In some embodiments, the cover edge portion is stitched and / or bonded and / or clamped to the fastening portion.

[0231] In some embodiments, a child seat may include a seat shell that provides a space for accommodating a child. In some embodiments, the child seat may include an internal impact absorber. The internal impact absorber may include a first impact protection portion that is configured to reduce the impact on the shoulders of a seated child in the event of a side impact. In some embodiments, the first impact protection portion includes areas with different damping characteristics. In some embodiments, the areas with different damping characteristics are provided by areas of different material stiffness in the internal impact absorber. In some embodiments, the first impact protection portion includes an upper end portion and a lower end portion. In some embodiments, the lower end portion is arranged on the seat shell closer to the hip area of ​​the seated child than the upper end portion. In some embodiments, the upper end portion is constructed to be stiffer than the lower end portion.

[0232] In some embodiments, the lower end portion is configured to grasp the shoulders of a child having a first size, such as a child having the minimum allowable size of a child seat. In some embodiments, the upper end portion is configured to grasp the shoulders of a child having a second size larger than the first size (e.g., the maximum allowable size of a child seat). In some embodiments, different damping properties are provided by mechanically weakened sections in the material. These mechanically weakened sections may be provided by recesses, grooves, holes, etc. In some embodiments, the first impact protection portion may be integrally formed. In some embodiments, the internal impact absorber may include a foam material, such as a closed cell foam material. In some embodiments, the foam material includes expanded polypropylene. In some embodiments, the density of the foam material is substantially 30 grams per liter.

[0233] In some embodiments, a child seat may include a seat structure that defines an internal accommodation space for a child. In some embodiments, a child seat may include a side impact protection assembly that is configured to initiate movement of the seat and / or movement of the head of a seated child about a vertical axis in the event of a side impact. In some embodiments, the side impact protection assembly includes an outer rear bumper. The outer rear bumper may be supported on the outside of the seat structure. The outer rear bumper may be supported on the outside of the seat structure at an area behind the internal accommodation space. In some embodiments, the seat structure includes a seat shell that defines the accommodation space.

[0234] In some embodiments, the seat structure includes a load-bearing portion that supports the seat shell. In some embodiments, the seat structure may include a beam-shaped load-bearing portion as described herein. In some embodiments, the load-bearing portion defines a support surface facing a central longitudinal plane of the seat structure. In some embodiments, the rear side bumper is housed in the load-bearing portion. In some embodiments, the rear side bumper is housed in a reinforcement structure of the load-bearing portion. In some embodiments, the rear side bumper is housed in the load-bearing portion so that it protrudes laterally from the load-bearing portion.

[0235] In some embodiments, the side impact protection assembly further comprises an outer front impactor supported on the seat structure at the level of the chest of the seated child and / or an internal impact absorber. In some embodiments, the internal impact absorber may be provided on the seat shell of the child seat and extend along the seat shell of the child seat from the head area of ​​the seat downwardly towards the hip area and / or at least extend to the lower end of the chest of the seated child. In some embodiments, the internal impact absorber may be integrally formed from a single material. In some embodiments, the internal impact absorber may comprise a plastic material. In some embodiments, the internal impact absorber may comprise a foam material, such as a closed-cell foam material. In some embodiments, the internal impact absorber may be made of expanded polypropylene. In some embodiments, the internal impact absorber may be made of a material having a density of substantially 30 g / l. In some embodiments, a recess and / or an opening may be provided in the lower end portion of the impact absorber. In some embodiments, the recess and / or the opening may have different shapes and sizes and be arranged to reduce the stiffness of the impact absorber in the lower end portion to a more suitable stiffness for use with smaller children.

[0236] In some embodiments, the rear side bumper and the front side bumper are spaced apart from each other and / or formed as independent components. In some embodiments, the rear side bumper and the front side bumper protrude from the seat structure parallel to each other. In some embodiments, the rear side bumper may include a free end portion and a fixed end portion. In some embodiments, the front side bumper includes a free end portion and a fixed end portion. In some embodiments, each free end portion may define a force-bearing surface. In some embodiments, the force-bearing surfaces of the rear side bumper and the front side bumper may be substantially located at the same level, such as the same lateral level and / or the same vertical level. In some embodiments, the force-bearing surfaces of the rear side bumper and the front side bumper may be positioned so that the force-bearing surface of the rear side bumper is arranged to be more outward in the lateral direction than the force-bearing surface of the front side bumper.

[0237] In some embodiments, the side impact protection assembly is configured such that the forces generated by a side impact and acting on the child seat in a lateral direction are received first by the rear side impactors and / or are transmitted to the seat structure to a greater extent by the rear side impactors with less impact absorption than by the front side impactors.

[0238] In some embodiments, the rear side bumper is harder than the front side bumper. In some embodiments, the density of the rear side bumper can be 50 g / L. In some embodiments, the density of the front side bumper can be 27 g / L. In some embodiments, the rear side bumper can protrude further in the lateral direction than the front side bumper. In some embodiments, the front side bumper and / or the rear side bumper can include or be made of EPS material.

[0239] In some embodiments, the child seat may include an outer impact protection assembly disposed on the outer side of the seat shell and configured to dampen an impact to the seat shell in the chest region of a seated child in the event of a side impact. In some embodiments, the outer impact protection assembly includes a front side impactor configured as an impact absorber and supported on the seat shell at the chest level of a seated child. In some embodiments, the front side impactor is configured such that a lower end portion thereof provides less rigidity than an upper end portion thereof.

[0240] In some embodiments, the front side impactor is constructed and arranged such that its size decreases toward a lower end portion thereof.

[0241] In some embodiments, the front side bumper includes a wider upper end portion and a narrower lower end portion. In some embodiments, the front side bumper may be in a triangular or teardrop shape.

[0242] In some embodiments, the outer impact protection assembly may be combined with an inner impact absorber. In some embodiments, the front side impactor and the inner impact absorber are arranged in series in the lateral direction so that the forces generated by the side impact are transmitted through both the front side impactor and the inner impact absorber. In some embodiments, the inner impact absorber includes a first impact protection portion, which is configured to reduce the impact on the shoulders of a seated child in the event of a side impact and has areas with different damping characteristics. In some embodiments, the first impact protection portion may include an upper end portion and a lower end portion. Compared with the upper end portion, the lower end portion can be arranged on the seat shell, closer to the hip area of ​​the seated child. In some embodiments, the upper end portion is constructed to be harder than the lower end portion. In some embodiments, the front side impactor includes a material with a lower density than the inner impact absorber or consists of a material with a lower density than the inner impact absorber.

[0243] In some embodiments, a head restraint assembly of a child seat can be configured to reduce acceleration of a seated child's head in the event of a side impact. In some embodiments, the head restraint assembly includes a head movement inducing structure.

[0244] In some embodiments, the head movement inducing structure is configured so that when the head of a seated child contacts the head restraint assembly due to a side impact, a rolling motion of the child's head is induced to at least partially reduce the acceleration of the head. In some embodiments, the head movement inducing structure may be configured to induce a predetermined rolling motion sufficient to reduce the acceleration of the head while preventing an excessive increase in the force acting on the neck of the seated child.

[0245] In some embodiments, the headrest assembly includes a headrest portion, which includes a rear inner support surface and an inner lateral support surface. For example, the headrest assembly may include a left inner support surface and a right inner support surface. In some embodiments, the inner lateral support surface is formed as a convex shape on a cross-section taken along a vertical plane that extends in the lateral direction of the headrest assembly. In some embodiments, the inner lateral support surface is configured to bulge toward the internal accommodating space. The headrest can be adjusted in height. In some embodiments, each inner lateral support surface includes a lower surface portion and an upper surface portion connected to each other by a rounded vertex portion. Each vertex portion may be located at a position of the inner lateral support surface that is between the upper end portion and the center of the head of the sitting child when the headrest portion is correctly adjusted for the size of the sitting child.

[0246] In some embodiments, the child seat includes a head restraint impact protection assembly configured to catch the head restraint assembly in the event of a crash. In some embodiments, the head restraint impact protection assembly is configured to provide a damping effect to the head restraint assembly in a side impact direction and / or in a rear impact direction.

[0247] In some embodiments, the head restraint impact protection assembly includes a head restraint impact protection portion shaped to correspond to a rear portion of the head restraint assembly.

[0248] In some embodiments, the headrest impact protection portion includes an inner surface facing the headrest assembly, and the headrest assembly includes an outer surface facing the inner surface. In some embodiments, the inner surface and the outer surface extend at least partially substantially parallel so that they can come into surface contact in the event of a crash.

[0249] In some embodiments, the inner surface and the outer surface may be curved. In some embodiments, the outer surface may form a rear corner region of the headrest assembly, and the inner surface may extend from the rear of the headrest assembly to the lateral side of the headrest assembly around the rear corner region.

[0250] In some embodiments, the headrest impact protection assembly is integrally formed with the inner impact absorber. In some embodiments, the inner impact absorber defines the headrest impact protection portion as a second impact protection portion and includes a first impact protection portion that provides damping for the shoulders and / or chest of a seated child.

[0251] In some embodiments, the inner impact absorber is attached to a seat shell of the child seat, and the headrest impact protection portion protrudes further into the interior of the seat shell than the first impact protection portion to reduce the space between the headrest impact protection portion and the headrest assembly.

[0252] In some embodiments, the headrest assembly includes an outer profile having a U-shape. In some embodiments, the headrest assembly may include an inner profile having a V-shape, for example, when the headrest is viewed from vertically above (eg, in plan view).

[0253] In some embodiments, the child restraint system includes a fixed portion and a movable portion. The fixed portion can be a part of the body of the base, such as a part of the body of the base described in other parts of this specification. The main body portion can be the front end portion of the body. In some embodiments, the fixed portion can be a secondary support portion on the body. The secondary support portion can be configured to be combined with other embodiments described in this specification. The movable portion can be a restraining portion of the child seat. In other configurations, the movable portion can be the upper end portion of the load leg. The movable portion can move toward the fixed portion and can also move away from the fixed portion. The movable portion and the fixed portion can each include an edge portion, wherein when the movable portion moves toward the fixed portion, the edge portions approach each other. At least one of the edge portions of the movable portion and the fixed portion includes an elastically deformable portion or is defined by an elastically deformable portion.

[0254] In some embodiments, the fixed portion is a front portion of the base body to which the load leg is pivotably coupled, and the movable portion is a coupling portion of the load leg.

[0255] In some embodiments, the coupling portion and / or the body is designed so that the transition between its outer surfaces is substantially seamless when the load leg is in the use position. The coupling portion and / or the body may include an elastically deformable lip or strip attached to the edge portion. The elastically deformable lip or strip may be a rubber lip or strip.

[0256] In some embodiments, the fixed portion is a secondary support portion on the main body as described in conjunction with other embodiments in this specification. The movable portion may be a restraint portion of the child seat, which may be engaged with the secondary support portion. The restraint portion of the child seat is constructed in a manner as described in conjunction with other embodiments of the restraint portion included in this specification. The secondary support portion may include an elastically deformable portion. The elastically deformable portion may be made of rubber. The elastically deformable portion may be provided at least on a portion of the secondary support portion that faces the direction of entry into the restraint portion. The elastically deformable portion may be configured to protrude from a retaining structure of the secondary support portion. For example, the elastically deformable portion may protrude laterally from the retaining structure of the secondary support portion. Generally, the elastically deformable portion is further outwardly away from the secondary support portion than any rigid portion that may cause a user's finger to be pinched.

[0257] In some embodiments, the elastically deformable portion projects laterally from the secondary support portion in such a way that the constraining portion must first pass through or under the elastically deformable portion when moving to the secondary support portion.The elastically deformable portion may be a cover.

[0258] In some embodiments, the elastically deformable portion includes a cover covering the upper side of the free end portion of the secondary support portion so that any rigid component or edge of such a component is further positioned inside the deformable portion or cover in the movement direction of the constraining portion.

[0259] In some embodiments, the hardness of the elastically deformable portion is 80 Shore A or less. The elastically deformable portion may include a thermoplastic elastomer material, such as TPE-S or SEBS.

[0260] In some embodiments, the upper surface portion of the base includes at least one additional protrusion in addition to the main support portion. The additional protrusion may be a ridge. The additional protrusion may be a rib. Two or more additional protrusions may be provided. The additional protrusion may extend at a predetermined angle arranged around the rotation axis defined by the main support portion. The additional protrusion may be configured to prevent excessive surface contact between the lower surface of the child seat and the upper surface portion of the base. In some embodiments, the additional protrusion extends along a curved path. The curved path may be circular. In some embodiments, the upper surface portion of the base includes two or more additional protrusions, which extend along at least two different concentric circles around the rotation axis. In some embodiments, the protrusions are offset relative to each other. In some embodiments, the protrusions extend between different angular positions around the rotation axis. In some embodiments, the protrusions extending along different concentric circles overlap each other at least partially in the radial direction, for example in the radial direction away from the rotation axis defined by the main support portion.

[0261] In some embodiments, the lower surface portion of the child seat includes at least one protrusion. The lower surface portion can be a child seat surface portion extending around the interface portion, such as the interface portion described in other embodiments of this specification. At least one protrusion is configured to prevent excessive surface contact between the upper surface portion of the base and the lower surface portion of the child seat. The protrusion can be a ridge. The protrusion can be a rib. The protrusion can extend at a predetermined angle arranged around the interface portion and / or around the rotation axis defined by the interface portion. The protrusion can extend along a curved path, wherein the curved path can be circular. The lower surface portion of the child seat may include two or more protrusions extending along at least two different concentric circles around the interface portion and / or around the rotation axis. In some embodiments, the protrusions are offset relative to each other and / or extend between different angular positions around the interface portion and / or around the rotation axis. In some embodiments, the protrusions extending along different concentric circles overlap each other at least partially in a radial direction, for example, in a radial direction away from the rotation axis defined by the interface portion.

[0262] In some embodiments, the child seat includes a belt receiving portion configured to receive a seat belt portion of a vehicle seat so as to install the child seat on the vehicle seat. The child seat also includes a blocking portion configured to move between a blocking position and a release position, wherein the blocking position blocks the insertion of the belt portion into the belt receiving portion and the release position allows the belt portion to be inserted into the belt receiving portion. The receiving portion may include a recess, and the blocking portion may include a free end portion configured to be received in the recess when the blocking portion is in the blocking position.

[0263] In some embodiments, the blocking portion is configured to at least partially protrude from below into the belt receiving portion when in the blocking position.

[0264] In some embodiments, the blocking part is linearly movable. The blocking part may be supported on a carrier. The blocking part may be supported on the carrier by a spring, for example a spring acting in the direction of movement of the blocking part and / or pushing the blocking part in a direction away from the carrier. The carrier may be linearly guided in a support structure of the child seat. The blocking part may be linearly guided on the carrier, for example in a guide recess. A spring may be arranged between the rear end of the blocking part and the bottom part of the guide recess.

[0265] In some embodiments, the child seat further comprises a seat structure having a seat bottom and a seat back. The seat structure can be configured to transform between a sitting configuration and a lying flat configuration. The blocking portion can be operably coupled to the seat structure so that when the seat structure transforms to the lying flat configuration, the blocking portion is moved to the blocking position, and when the seat structure transforms to the sitting configuration, the blocking portion is moved to the releasing position.

[0266] In some embodiments, the seat back includes a force applying portion, and the blocking portion includes a force receiving portion or is force-transmittingly coupled to the force receiving portion, the force receiving portion being operatively coupled to the force applying portion. The force receiving portion is slidably retained on the force applying portion.

[0267] The blocking portion may be guided along a predetermined path. For example, the blocking portion may be guided along a straight path or a curved path. The predetermined path may extend in an upward direction and / or may be provided in a support structure of the child seat. The predetermined path may be defined by a slot provided in the support structure. The support structure may include a belt receiving portion and / or at least rotatably support the seat back. The force applying portion may include a slot, and the force receiving portion may be slidably received in the slot.

[0268] In some embodiments, the child seat includes a belt receiving portion configured to receive a seat belt portion of a vehicle seat for mounting the child seat to the vehicle seat, wherein the belt receiving portion is disposed on a rear side of a seat back. The belt receiving portion is configured to be convertible between an active configuration in which the seat belt portion can be inserted into the belt receiving portion and an inactive configuration in which the seat belt portion cannot be inserted into the belt receiving portion.

[0269] In some embodiments, the belt receiving portion is converted to an inactive configuration when the seat structure is converted to the lie-flat configuration, and the belt receiving portion is converted to an active configuration when the seat structure is converted to the sitting configuration. In some configurations, the belt receiving portion is constructed and arranged such that converting the seat structure to the lie-flat configuration is impossible or prevented when the seat belt portion is received in the belt receiving portion.

[0270] In some embodiments, the belt receiving portion is provided on the seat back so as to be movable integrally with the seat back. The seat back is pivotally coupled to the support structure for converting the seat structure between the sitting configuration and the lie-flat configuration. The seat back and the support structure may be configured such that when the seat structure is in the lie-flat configuration, at least an insertion section of the belt receiving portion is covered by the support structure.

[0271] In some embodiments, the seat back and support structure are configured such that when the seat structure is in the lie-flat configuration, the belt receiving portion is completely covered by the support structure and is therefore not accessible to a user for insertion of the seat belt portion.

[0272] In some embodiments, a cover for a child seat is provided. The cover includes a flexible cover portion configured to cover at least an outer portion of a seat structure, wherein the flexible cover portion includes a cover edge portion. The cover also includes a fastening portion for coupling the cover edge portion to the seat structure. The fastening portion is coupled to the cover edge portion at a coupling section. The fastening portion extends along the flexible cover portion, wherein its outer side faces the inner side or inner surface of the flexible cover portion. The inner side or inner surface of the fastening portion includes a support protrusion configured to bear on the edge portion of the outer portion.

[0273] In some embodiments, the coupling section is fixed to the cover edge portion along a fixing line, wherein the fixing line may extend substantially parallel to the cover edge portion.

[0274] In some embodiments, the coupling section is sewn to the cover edge portion along a stitching line, wherein the stitching line forms a securing line.

[0275] In some embodiments, the supporting protrusion extends on the inner side of the fastening portion following the fixing line, for example parallel to the fixing line and / or parallel to an imaginary straight line extending through the end points of the fixing line.

[0276] In some embodiments, the support protrusion defines or comprises a support surface, wherein the support surface is provided on a lateral side of the support protrusion facing away from the coupling section.

[0277] In some embodiments, the fastening portion is coupled to the flexible cover portion on only one side. In some embodiments, the support protrusion is formed to be straight.

[0278] In some embodiments, the fastening portion is a substantially flat rigid component. In some embodiments, the fastening portion may be substantially rectangular. The coupling section may be provided at the longitudinal ends of the fastening portion. The fixing line may extend in a transverse direction of the fastening portion. The support protrusion may be provided at a position between the longitudinal ends of the fastening portion.

[0279] In some embodiments, the fastening portion may be configured to hook onto an edge portion of the seating structure and support the cover edge portion at a predetermined distance from the edge portion of the seating structure.

[0280] In an embodiment, a child seat comprises a seat shell providing an internal accommodation space for a child. The child seat further comprises an outer impact protection assembly, which is arranged on the outer side of the seat shell and is configured to attenuate an impact to the seat shell in the chest area and / or the head area of ​​a seated child in the event of a side impact. The outer impact protection assembly comprises an impact absorber retained on the seat shell. The impact absorber extends laterally outward from the seat shell in a transverse direction of the child seat. The impact absorber is tapered towards its transverse outermost portion and / or tapers towards a front end.

[0281] In some embodiments, the impact absorber is at least partially radially tapered toward its laterally outermost portion. In some embodiments, the impact absorber is at least partially tapered toward its laterally outermost portion.

[0282] In some embodiments, the outer side of the impact absorber is produced in relief in order to provide different damping properties in different sections of the outer side.

[0283] In some embodiments, the damping characteristics are distributed so that a side impact on the impact absorber, such as an impact applied by an imaginary plane force-applying surface extending perpendicular to the transverse direction of the child seat, is first slightly damped in the middle portion, optionally by compressing the middle portion in the transverse direction of the child seat to the extent that the force-applying surface contacts the stiffer rear portion of the impact absorber, and then transferred to the rear portion, thereby inducing a rotation in the seat structure. Optionally, due to the tapered shape of the impact absorber, the middle portion can then be further compressed, wherein the stiffness gradually increases.

[0284] In some embodiments, the elongated middle portion of the impact absorber that rises above the adjacent upper portion and / or the adjacent lower portion extends at least partially from the front end portion to the rear end portion of the impact absorber.

[0285] In some embodiments, the impact absorber comprises an outwardly bulging shape with an enlarged outer surface portion extending from the rear end portion to the front end portion.The arcuate outer surface portion may be provided on the elongated middle portion.

[0286] In some embodiments, the outermost lateral portion is disposed in a mid-portion between the front portion and the rear portion of the impact absorber.

[0287] In some embodiments, the impact absorber is integrally formed from a single material. In some embodiments, the material is a closed cell material. In some embodiments, the closed cell material is expanded polystyrene (EPS).

[0288] In some embodiments, the rear end portion of the impact absorber has a higher stiffness than the front end portion.

[0289] In one embodiment, a headrest assembly for a child seat is provided. The headrest assembly includes a headrest base body, the base body includes a rear wall and two side walls, and the rear wall and the two side walls limit the internal accommodation space for the head of the sitting child. The headrest assembly also includes a first damping portion provided on the rear inner area of ​​the side wall. In addition, the headrest assembly also includes a second damping portion provided on the front area of ​​the side wall. The second damping portion continues to extend from the front end portion of the first damping portion.

[0290] In some embodiments, the second damping portion includes a coupling portion that is at least partially inserted into a receiving space formed between the base body and the first damping portion. For example, a receiving space may be formed between a recess of the base body and the first damping portion. A plurality of receiving spaces may be provided. The coupling portion may include a protrusion inserted into the recess. In a modification, the coupling portion may include two or more protrusions inserted into two or more recesses.

[0291] In some embodiments, the transition from the first damping portion to the second damping portion is at least partially stepped. At the front end portion of the first damping portion, the rear end portion of the second damping portion may protrude beyond the inner contour of the adjacent first damping portion. A sharp edge may be formed by the second damping material. The sharp edge may extend in a plane or along a plane.

[0292] The rear side surface portion of the second damping portion and the front side surface portion of the first damping portion may face each other. Additionally or alternatively, the front side surface portion and the rear side surface portion may extend parallel to each other. The front side surface portion and the rear side surface portion may extend along a reference plane extending in a lateral direction of the headrest assembly. The reference plane may extend perpendicular to a vertical mid-plane of the headrest base body.

[0293] In some embodiments, the headrest base body is U-shaped when viewed from above and includes a base and two legs. The base may be formed by a rear end portion of the headrest base body, and the legs may be formed by two side portions of the headrest base body. The rear portion may include a rear wall, and each side portion may include a side wall. The headrest base body may include a main extension direction transverse to the extension direction of the legs from the base. The reference plane may extend at a certain angle relative to the main extension direction, for example, so that the upper portion is arranged further in the forward direction than the lower portion.

[0294] In some embodiments, a rear lower portion of the first damping portion and a portion of the headrest base body form a rear hollow space therebetween.

[0295] In some embodiments, the first damping part is made of a foamed material, such as EPP. In addition or alternatively, the second damping part can also be made of a polyurethane material, such as PU foam.

[0296] In another embodiment, a headrest assembly includes a headrest base body and an impact damping portion disposed on an inner side of the headrest base body. The headrest base body includes a rear wall and two side walls, which limit an internal accommodation space for a head of a sitting child. The impact damping portion is integrally formed of a single material. For example, the impact damping portion may be formed of or may include a foam material such as EPP. A side portion of the impact damping portion extending along the side wall includes a groove-like recess located on an outer side thereof.

[0297] The groove-like recess may provide an inner wall portion with reduced material thickness in the impact damping portion. A gap may be formed between the inner wall portion and the side wall to provide a section with reduced side stiffness and / or hardness and / or increased flexibility.

[0298] In some embodiments, the rear portion of the groove-shaped recess is at least partially defined by an inclined flat surface. The entire rear portion can be formed as a flat surface. In a modification, the rear portion can be at least partially defined by a curved surface and / or can be at least partially formed by a flat surface. The various surfaces can extend so that the material thickness increases towards the rear portion of the side in the rearward direction of the impact damping portion. If an inclined flat surface is provided, the surface can extend at a certain angle relative to the vertical mid-plane of the impact damping portion, for example at an angle of 45 degrees or less.

[0299] In some embodiments, an edge portion extending at least partially around the opening of the slot-like recess contacts the headrest base body.

[0300] In some embodiments, the headrest base body and the impact dampening portion comprise a U-shape. Each side portion may define a leg of the U-shape.

[0301] In some embodiments, the groove-shaped recess extends over more than half of the length of the side between the side front end and the side rear end. Additionally or alternatively, the groove-shaped recess may also extend over more than half of the width of the side between the lower end and the upper end of the side.

[0302] In some embodiments, the groove-shaped recess is tapered inwardly along the lateral direction of the headrest assembly. In addition or alternatively, the groove-shaped recess can be tapered toward the front end of the side portion. In some configurations, the groove-shaped recess can include a volume of 50 ml or more, such as 100 ml or more or 200 ml or more.

[0303] In another embodiment, a child seat with a seat structure and a headrest assembly is provided. The seat structure includes a backrest portion with a rigid backrest base body and an inner pad. The backrest base body can be a seat shell. The headrest assembly includes a flexible side portion that is configured to bend outward during a side impact. The inner pad includes a headrest portion and an adjacent portion adjacent to the headrest portion. The headrest portion is arranged in the headrest assembly area on the side of the backrest base body. The adjacent portion can be a shoulder support portion or an upper arm support portion. The adjacent portion extends along the narrow side of the headrest portion, at least lower than the headrest portion on the side of the backrest body. In some configurations, the hardness of the headrest portion is lower than the hardness of the adjacent portion. In some embodiments, the stiffness of the headrest portion is lower than the stiffness of the adjacent portion. In some embodiments, the density of the headrest portion is lower than the density of the adjacent portion.

[0304] In some embodiments, the transition from the inner surface of the adjacent portion to the inner surface of the headrest portion is stepless. Additionally or alternatively, the transition may be substantially seamless.

[0305] In some embodiments, the headrest portion partially forms a terminal edge of the cushion.

[0306] In some embodiments, the adjacent portion and the headrest portion include foam material. The adjacent portion may include a closed-cell foam material, such as EPP. The closed-cell foam material may include a density of substantially 30 grams per liter. In addition or alternatively, the headrest portion may also include an open-cell foam material.

[0307] Other features of the invention will become apparent by considering the information contained above, and in or in combination with the configurations presented in the following detailed description, drawings and claims, and the itemized structures of the following aspects. The invention is illustrated by way of example and not limitation in the figures of the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0308] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate possible configurations of the embodiments and, together with the description, further serve to explain the principles of the embodiments and enable those skilled in the art to make and use the embodiments. It should be noted that the same or similar parts in different drawings are represented by the same reference numerals.

[0309] Figure 1 A perspective view of a base is shown according to an exemplary construction.

[0310] Figure 2 Shows Figure 1 Side view of the base shown in .

[0311] Figure 3 A cross-sectional view of a main support portion of a base is shown according to an exemplary construction.

[0312] Figure 4 Shows that Figure 3 A perspective view of an exemplary configuration of an engagement portion where a main support portion engages is shown in FIG.

[0313] Figure 5 A bottom view of an exemplary configuration of an interface for a child seat is shown.

[0314] Figure 6 Shows the available Figure 5 Schematic plan view of components of a locking mechanism in an exemplary configuration shown in .

[0315] Figure 7 A perspective view from below is shown of an exemplary configuration of a child restraint system.

[0316] Figure 8An enlarged perspective view showing an exemplary configuration of a secondary support portion.

[0317] Fig. 9 Shows Figure 8 Internal details of the secondary support portion shown in .

[0318] Fig.10 A perspective view of a retention structure according to an exemplary construction is shown.

[0319] Fig.11 A perspective view of an exemplary configuration of a secondary support portion including a locking mechanism is shown.

[0320] Fig.12 A perspective view showing the internal components of the locking mechanism.

[0321] Fig.13 A perspective view of a base for a child seat is shown according to an exemplary construction.

[0322] Fig.14 Shows Fig.13 Side view of the base shown in .

[0323] Fig.15 A perspective view of a child seat base is shown according to an exemplary construction.

[0324] Fig.16 Shows Fig.15 Side view of the base shown in .

[0325] Fig.17 A perspective view showing a possible interior configuration of a child seat base.

[0326] Fig.18 A perspective view showing a possible interior configuration of a child seat base.

[0327] Fig.19 A cross-section through a tensioning mechanism according to an exemplary construction is shown.

[0328] Fig. 20 A perspective view showing the components of the tensioning mechanism.

[0329] Fig.21 A perspective view of components of a release mechanism according to an exemplary construction is shown.

[0330] Fig. 22 An enlarged perspective cross-sectional view of components of a tensioning mechanism according to an exemplary construction is shown.

[0331] Fig.23 An enlarged cross-sectional view showing an exemplary configuration of the display indicator device is shown, wherein the operating member is in a retracted position.

[0332] Fig.24 Shows Fig.23 An enlarged cross-sectional view of the operating component in which the operating component is located in the indicated position.

[0333] Fig.25 Shows Fig.23 An enlarged cross-sectional view of the operating component in the deployed position.

[0334] Fig.26 A side view showing a possible configuration of the base.

[0335] Fig. 27 A perspective view of an exemplary configuration of a base is shown, and the operation of the release mechanism is illustrated.

[0336] Fig.28 A plan view of a base including a sensor assembly with at least a seat detection sensor is shown according to an exemplary construction.

[0337] Fig.29 A bottom view of a mount according to an exemplary construction is shown that includes a sensor assembly having a sensor in a first connector and a second connector for securing the mount to a fixed structure.

[0338] Fig.30 A perspective view of locking components of an exemplary locking mechanism is shown.

[0339] Fig.31 The diagram shows the Fig.30 The locking component shown in FIG. 1 is a member of a sensor assembly that moves.

[0340] Fig.32 A possible configuration of the main support portion is shown, in which a seat detection sensor is provided.

[0341] Fig.33 A configuration is shown in which a magnetic sensor for detecting the presence of a load leg is provided on the bottom portion of the base.

[0342] Figure 34 to Figure 36 Different states of a load leg during a base installation process according to an exemplary configuration are illustrated.

[0343] Fig.37 and 38 A cross-section through the coupling portion of the load leg is shown, and how the load leg is pivotally mounted to the body of the base.

[0344] Fig.39 A perspective view of a load leg according to an exemplary construction is shown.

[0345] Fig.40 Shows Fig.39 An enlarged perspective view of the load leg connection portion is shown in FIG.

[0346] Fig.41 A cross-sectional view showing the magnet in the load leg and its position relative to the load leg detection sensor when the load leg is in the deployed position is shown.

[0347] Fig.42 A cross-sectional view showing the magnet in the load leg and its position relative to the load leg detection sensor when the load leg is in the stowed position.

[0348] Fig.43 A plan view of a display portion according to an exemplary configuration is shown.

[0349] Fig.44 An alternative configuration of the display portion is shown.

[0350] Fig.45 Another alternative configuration of the display portion is shown.

[0351] Fig.46 and Fig.47 One possible configuration of a coupling assembly is shown in perspective.

[0352] Fig.48 An exploded view of a connector of an exemplary coupling assembly is shown.

[0353] Fig.49 Picture shows Fig.48 A perspective view of the internal components of the connector is shown.

[0354] Fig.50 A plan view showing the components of the locking mechanism, with the locking member shown in the locked position.

[0355] Fig.51 show Fig.50 A plan view of a component in which the locking component is in a released position.

[0356] Fig.52 A schematic diagram of the drop zone is shown, where a child seat can be coupled to the base.

[0357] Fig.53 A perspective view of a child seat according to a possible configuration is shown.

[0358] Fig.54 Shows Fig.53 A partial enlarged view of the child seat.

[0359] Fig.55 A side view of a child seat according to a possible configuration is shown.

[0360] Fig.56 Shows Fig.55 An enlarged portion of a side view of FIG.

[0361] Fig.57 Shown with cover partially installed Fig.55 A partial side view of a child seat.

[0362] Fig.58 The arrangement of the cover on the child seat at the beginning of the installation process is shown.

[0363] Fig.59 The child seat is shown with the cover fully installed.

[0364] Fig.60 A perspective view of the outer side of a fastening portion according to one possible configuration is shown.

[0365] Fig.61 A perspective view of the inner side of a fastening portion according to one possible configuration is shown.

[0366] Fig.62 An enlarged view of a portion of a child seat is shown, particularly showing the portion upon which the fastener may be supported.

[0367] Fig.63 An enlarged cross-sectional view of a child seat is shown, showing the installed fasteners from the inside of the child seat.

[0368] Fig.64 A rear perspective view of a child seat is shown, the child seat being configured as a toddler seat.

[0369] Fig.65 Shows Fig.64 A front perspective view of a child seat is shown in FIG.

[0370] Fig.66 Display for Fig.64 and Fig.65 A perspective view of a mounting bracket in which a rear cover of a child seat is coupled to a support structure of the child seat.

[0371] Fig.67 Shows Fig.64 A front perspective view of a child seat head restraint assembly is shown in FIG.

[0372] Fig.68 show Fig.67 A top view of the head restraint assembly is shown in FIG.

[0373] Fig.69 Shows Fig.67 A rear perspective view of the head restraint assembly is shown in FIG.

[0374] Fig.70 A front perspective view of a child seat realized as an infant seat is shown.

[0375] Fig.71 and Fig.72 Shows Fig.70 A cross-sectional view of a child seat taken along a middle longitudinal plane of the child seat, wherein Fig.71 The seated configuration is shown, and Fig.72 Shown in lying configuration.

[0376] Fig.73 Shows Fig.70 Side view of the child seat with the side cover removed.

[0377] Fig.74 Displays the Fig.70 Details of the operating mechanism of the interface part of the child seat shown in FIG.

[0378] Fig.75 Shows Fig.74 Details of the force transmission components of the operating mechanism shown in .

[0379] Fig.76 and Fig.77 Shows Fig.74 More details on the operating mechanism functions.

[0380] Fig.78 Display for carrying Fig.70 An enlarged view of the secondary grip portion of the handle of the child seat.

[0381] Fig.79 Shows Fig.70 Detailed view of a child seat showing details of the belt securing assembly.

[0382] Fig.80 One exemplary configuration of a belt securing assembly is shown.

[0383] Fig.81 Another exemplary configuration of a belt securing assembly is shown.

[0384] Fig.82 A perspective view of a base is shown according to one embodiment.

[0385] Fig.83 An enlarged perspective view of a secondary support portion is shown according to one embodiment.

[0386] Fig.84 Shows Fig.82 An enlarged perspective view of the front portion of the base.

[0387] Fig.85 A perspective view of the rear side of a child seat is shown according to one embodiment.

[0388] Fig.86 Shown in Fig.85 sectional view of the rear portion of the child seat shown in FIG.

[0389] Fig.87 An enlarged perspective cross-sectional view of a belt receiving portion of a child seat is shown according to one embodiment.

[0390] Fig.88 A perspective side view of a fastening portion of a cover according to one embodiment is shown.

[0391] Fig.89 Shows Fig.88 Plan view of the fastening part.

[0392] Fig.90 A rear view of a child seat with an outboard impact protection assembly according to one embodiment is shown.

[0393] Fig.91 Shows Fig.90 View of a child seat from above.

[0394] Fig.92 Shows Fig.90 and Fig.91 A perspective view of an impact absorber of a child seat.

[0395] Fig.93 According to one embodiment, Fig.92 Fixing of the shock absorber.

[0396] Fig.94 An exploded view of components of a head restraint assembly according to one embodiment is shown.

[0397] Fig.95 Shows Fig.94 A view of a head restraint assembly as seen from above.

[0398] Fig.96 Display by Fig.95 A cross-sectional view of a headrest assembly.

[0399] Fig.97 An enlarged perspective view of an upper portion of a child seat back is shown according to one embodiment.

[0400] Fig.98 A perspective view of a head restraint assembly according to another embodiment is shown.

[0401] Fig.99 Shows Fig.98 A side view of a head restraint assembly.

[0402] Fig.100 Display edge Fig.98 and Fig.99 A cross-sectional view of a vertical mid-plane of a headrest assembly.

[0403] Fig.101 Shows along Fig.100 A cross-sectional view of a horizontal mid-plane of a head restraint assembly.

[0404] Fig.102 Shows Fig.101 Plan view of the headrest assembly

[0405] Fig.103 Shows Fig.102 A front view of a head restraint assembly.

[0406] Fig.104 Display from according to Fig.103 A side cross-sectional view of the left side of the head restraint assembly along the mid-plane.

[0407] Fig.105 An enlarged view of the transition section of the head restraint assembly is shown.

[0408] Fig.106 A perspective view of a release mechanism component according to an improved design is shown.

[0409] All figures are merely schematic representations of exemplary embodiments, wherein, in particular, distances and size relations are not presented to scale.

[0410] The features and advantages of the embodiments will become more apparent from the detailed description given below in conjunction with the accompanying drawings, in which the same reference numerals identify corresponding elements throughout. In the accompanying drawings, similar reference numerals generally indicate the same, functionally similar, and / or structurally similar elements. DETAILED DESCRIPTION

[0411] The following detailed description is merely exemplary in nature and is not intended to limit the application and uses. Furthermore, there is no intention to be bound by any theory presented in the preceding background or summary or the following detailed description.

[0412] Embodiments of the present disclosure will be described in detail with reference to the embodiments thereof as shown in the accompanying drawings. References to "one embodiment," "an embodiment," "some embodiments," etc. indicate that the (multiple) embodiments may include a particular feature, structure, or characteristic, but not necessarily every embodiment may include the particular feature, structure, or characteristic. Furthermore, such statements do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is proposed that it is within the knowledge of a technician in the field to implement this feature, structure, or characteristic in conjunction with other embodiments whether or not explicitly described.

[0413] For ease of description, spatially relative terms such as "below," "beneath," "below," "above," "upper," "relative to," and the like may be used herein to facilitate describing the relationship of one element or feature to another element(s) or feature(s) as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptive language used herein should be interpreted accordingly.

[0414] Terms describing parts or components as "releasable" and / or "detachable" refer to configurations in which a part or component can be separated from at least another part or component without destroying one of the cooperating parts or components. These terms can also describe configurations in which parts and components can be separated or disengaged without tools (tool-free).

[0415] Example Base Construction

[0416] Available from Figure 1 and Figure 2 An exemplary configuration of the base 2 is collected in FIG. The base 2 is configured to be coupled to a vehicle seat 90 and is configured to support a child seat 3 thereon (e.g., as in Fig.53 and Fig.70 Thus, the base 2 may include various components and features related to the base 2 being coupled to a vehicle seat and / or to a child seat ( Figure 1 and Figure 2 Features and structures related to the connection to the base 2 (not shown).

[0417] The base 2 may include a body 20 configured to be positioned on a vehicle seat 90 . A load leg 900 may be pivotably coupled to the body 20 on the front portion 4 of the base 2 .

[0418] At the rear portion 5 of the base 2, an anti-rebound portion 300 may be provided. The anti-rebound portion 300 may be configured to make surface contact with the backrest 92 of the vehicle seat 90.

[0419] The base 2 may further include a coupling interface 100. The coupling interface 100 may be a first type coupling interface as mentioned in conjunction with other features and embodiments described in other parts of this specification. The coupling interface 100 is configured to releasably lock with a child seat to be supported on the base 2. Different types of child seats may be supported on the base 2, including a toddler seat or an infant seat. The child seat 3 is described in other parts of this specification.

[0420] Furthermore, the base 2 may include a coupling assembly 200 for coupling the base 2 to the fixed structure 96 in the vehicle seat 90. To this end, the coupling assembly 200 may include a coupling portion 202 that is releasably engageable with the fixed structure 96.

[0421] The base 2 may include a tensioning mechanism 400 configured to generate an urging force for urging the base 2 onto the vehicle seat 90 once the base 2 is operably coupled to the fixed structure 96 of the vehicle seat 90 , for example, by means of the coupling portion 202 .

[0422] The base 2 may further include a retaining structure 600 ( ) configured to securely hold the child seat 3 on the base 2 in the event of a crash. Fig.10 (displayed in the figure).

[0423] The base 2 may further include a release mechanism 700 configured to release or unlock the connecting portion 202 from the fixing structure 96 and / or may be configured to release or disengage the tensioning mechanism 400 and / or may be configured to release or unlock movement of the connecting portion 202 relative to the anti-rebound portion 300 .

[0424] like Figure 1 As further shown in FIG. 8 , the base 2 may include a sensor assembly 800 including one or more sensors for detecting a particular state or condition of the base 2 and / or a child seat 3 supported on the base 2 .

[0425] The base may further include a display portion 1000 configured to provide centralized information regarding the status of the child restraint system.

[0426] The base 2 may include a locking mechanism 500 for locking the rotation of the child seat 3 around the rotation axis.

[0427] Despite Figure 1 and Figure 2 In the figure and also in several of the figures described below, the construction of the base 2 is shown, in which all the latter specific mechanisms and arrangements are provided, but it is noted that it is possible to implement the latter features, arrangements and mechanisms alone, or to combine two or more of them in an appropriate manner.

[0428] The connection interface 100, the connection assembly 200, the anti-rebound portion 300, the tensioning mechanism 400, the locking mechanism 500, the retaining structure 600, the release mechanism 700, the sensor assembly 800, the load leg 900 and the display portion 1000 can be regarded as separate functional blocks, which can be implemented individually or in combination with one or more of the other functional blocks.

[0429] Example connection interface

[0430] The following will describe possible configurations of the connection interface 100 of the base 2. Figure 1 and Figure 2 As shown in FIG. 1 , the coupling interface 100 may include a main support portion 101. The main support portion 101 may protrude from an upper surface portion 118 of the base 2 in a first direction D1. In the present configuration, the first direction corresponds to an upward direction in a mounted condition of the base 2 on the vehicle seat 90.

[0431] The main support portion 101 is configured to be releasably engaged by the engaging portion of the inserted child seat 3 in a positive locking manner to prevent the movement of the child seat 3 in the first direction D1. The configuration of this child seat 3 will be described later. The main support portion 101 is also configured to support the child seat 3 so that it can rotate around a rotation axis R1 extending parallel to the first direction D1. In this configuration, the main support portion 101 may include a circumferential recess 105, which is configured to engage with the child seat 3, in particular for engaging with the locking mechanism 50 to be described later.

[0432] Figure 3 An enlarged cross-sectional view of the main support portion 101 is shown. The main support portion 101 may be formed as a protrusion. The main support portion 101 may include a lateral outer surface 104. The lateral outer surface 104 may extend completely around the main support portion 101, more precisely around the rotation axis R1 defined by the main support portion 101. Due to the shape of the lateral outer surface 104, the main support portion 101 may be configured to allow a 360° rotation of an inserted child seat. In other words, if the coupling interface 100 only includes the main support portion 101 as described, the inserted child seat can be rotated 360° around the rotation axis R1 and can be inserted into the main support portion in any orientation. In addition, this arrangement allows the child seat 3 to be inserted and interlocked with the main support portion 101 in any angle orientation.

[0433] The main support portion 101 may comprise a circumferential recess 105 provided in the lateral outer surface 104. The circumferential recess 105 is configured to receive the engagement portions 51, 52 of the child seat 3 for establishing a positive lock between the child seat and the main support portion 101. Figure 3 , the first engagement portion 51 is shown in a disengaged state, in which it is laterally spaced apart from the main support portion 101. Furthermore, the second engagement portion 52 is shown in an engaged state, in which a portion of the engagement portion is inserted into the circumferential recess 105. In this way, movement of the engagement portion 52 and therefore the child seat 3 in the first direction D1 is prevented by contact of the engagement portion with the main support portion 101.

[0434] Example shape of the main support portion - conical shape

[0435] As from Figure 3It can also be seen that the main support portion 101 according to the exemplary configuration may include an overall conical appearance. In particular, as Figure 3 The main support portion 101 shown in FIG. 1 has a truncated cone shape with a free upper end of narrower dimension. Since the engagement portion 51 is configured to engage from the lateral outer side of the main support portion 101, it is possible to couple the child seat to the main support portion 101 at any angular orientation about the rotation axis R1. In other words, the main support portion 101 does not require the child seat to be accurately positioned at a predetermined angular orientation to allow the child seat to be coupled to the main support portion 101. This configuration provides an increased angular drop zone in which a child seat can be inserted onto the main locking portion 101.

[0436] The main support portion 100 may be configured to carry the majority of the weight of an installed child seat. Thus, in an exemplary configuration, the majority of the weight of an installed child seat may be carried by the upper portion 107 of the main support portion 101. In some embodiments, the weight of the child seat may be supported entirely by the main support portion 101. In some embodiments, the main support portion 100 may be configured to support the child seat at a predetermined distance from an upper surface portion 118 of the body 20 of the base 2. The main support portion 101 may be configured as a fixed support portion. Thus, if a child seat is inserted and coupled to the main support portion 101, the child seat may rotate around the main support portion 101. It is also possible to provide an arrangement in which the main support portion 101 is configured to rotate with an inserted child seat.

[0437] The main support portion 101 may include an upper portion 107 supported in a suspended manner by the support portion 106. In this way, a suspended portion 108 is provided. Figure 3 As shown in , the overhanging portion 108 can be used to establish a positive lock between the child seat and the main support portion 101. For example, the circumferential recess 105 mentioned above can be limited by the lower surface 109 of the upper portion 107 and the outer surface 114 of the pillar portion 106. However, in some configurations, no recess is required and the connection between the child seat 3 and the main support portion 101 can be established by simply enclosing or receiving the overhanging portion 108 in the seat. The pillar portion 106 can be tapered at least partially towards the upper portion 107. The main support portion 101 can include a mushroom-like shape.

[0438] The upper portion 107 may include a layer structure. The upper portion 107 may include an upper layer 110 and a lower layer 111. The lower layer 111 may be configured to support the upper layer 110. The upper layer 110 may be configured to be in sliding contact with the lower support surface 34 of the child seat to be supported. Figures 4 to 6 Detail of a child seat 3 which can be supported on the main support part 101 is shown. The support surface 34 already mentioned is Figure 5 , and possible features of the child seat 3 will be described in more detail later.

[0439] The lower layer 111 may include a higher stiffness than the upper layer 110. The upper layer 110 may include a low-friction material. The low-friction material may be a synthetic material. For example, the low-friction material used in accordance with some embodiments may include polyoxymethylene (POM). The low-friction material is configured to be in sliding contact with the child seat 3, more precisely, with the aforementioned lower support surface 34 of the child seat 3. The use of a low-friction material in the upper layer 110 reduces the force required to rotate the inserted child seat 3 on the main support portion 101. The lower layer 111 may include a metal material. The upper layer 110 may at least partially surround the outer edge area of ​​the lower layer 111. In this way, contact between the lower support surface 34 of the child seat 3 and the lower layer 111 is prevented. Also as shown Figure 3 As shown in , the underside of the lower layer 111 may be exposed or uncovered so that the engagement member 51 of the mounted child seat 3 may directly contact the lower layer 111 .

[0440] like Figure 1 and Figure 3 As shown in FIG. 1 , the upper layer 110 may include a sliding surface 112 extending around a recess 113. The upper layer 110 may include a circular plate shape having a central circumferential recess 113. The sliding surface 112 may include Figure 1 The annular shape shown in . The annular sliding surface 112 provides controlled friction between the inserted child seat and the main support part 101 when the child seat 3 is rotated.

[0441] In some embodiments, the recess 113 is mechanically coded so that another component, for example an insert such as an adhesive label, can only be inserted into the recess in the correct orientation. Fig.82 An exemplary configuration is shown. The recess 113 may be substantially circular. The recess 113 may include a protrusion 113a extending laterally inwardly into the recess 113. The mechanically encoded recess may be used as a positioning aid, while the protrusion may be used as a positioning portion. The protrusion may protrude into the recess in a radial direction. A plurality of protrusions may be provided.

[0442] like Figure 3 As shown in FIG. 1 , the main support portion 101 may be configured as a hollow body. The hollow body may be closed at the top and may define a receiving space 115 in its interior. The receiving space 115 may be configured to receive a portion of the tensioning mechanism 400 and / or a sensor of the sensor assembly 800 (see, for example, FIG. 1 ). Fig.32 Generally, the receiving space 115 can be used to receive other parts of the base 2, so that the overall size of the base 2 is smaller.

[0443] Example interface for a child seat

[0444] A child seat 3 which may be coupled to the base 2, and in particular to the main support portion 101 as described above, will now be described. Figures 4 to 7 A possible configuration of a child seat 3 is shown.

[0445] Figure 5 A bottom view of a child seat 3 according to an embodiment is shown. The child seat 3 may include an interface portion 30 that is releasably engaged with the main support portion 101. The interface portion 30 may include a recess 31 configured to receive the main support portion 101 when the child seat 3 is inserted onto the base 2. When the child seat 3 is inserted onto the base 2, the insertion direction of the child seat 3 is opposite to the aforementioned first direction D1 in which the main support portion 101 protrudes from the base 2. Therefore, in the mounted condition of the child seat 3 on the base 2, the recess 31 extends along the first direction D1 so as to be able to receive the main support portion 101.

[0446] The interface portion 30 may include a support surface 34 configured to contact the longitudinal end portion of the main support portion 101. The longitudinal end portion of the main support portion 101 may be a free end portion of the main support portion 101. For example, the longitudinal end portion of the main support portion 101 may correspond to the above-mentioned upper portion 107 of the main support portion 101. The support surface 34 may be a flat surface. The support surface 34 may be configured to slide in contact with the upper portion 107 of the main support portion 101. Therefore, when the child seat 3 is placed on the main support portion 101, the support surface 34 contacts the upper portion 107.

[0447] As previously described, the upper portion 107 may include a sliding surface 112, which may include an annular shape. Therefore, in some embodiments, the support surface 34 may be configured to contact the annular sliding surface 112. As previously described, the upper portion 107 of the main support portion 101 may include a layer structure having an upper layer 110. The upper layer 110 may include a low-friction material to keep the friction between the child seat 3 and the main support portion 101 low when the child seat 3 contacting the upper portion 107 rotates around the rotation axis R1. In some constructions, the support surface 34 of the child seat 3 does not include a low-friction material. The support surface 34 may include any suitable material, such as a polyethylene (PE) material or another material. However, in some embodiments, the seat surface may also include a low-friction material, and the upper portion 107 may not include a low-friction material.

[0448] Example locking mechanism in an interface for a child seat

[0449] The child seat 3 may further include a locking mechanism 50 for releasably locking the child seat 3 on the main support portion 101. In some embodiments, if the main support portion 101 may include such an overhang portion 108, the locking mechanism 50 may be configured to engage behind the overhang portion 108. The locking mechanism 50 may include engagement portions 51, 52, which are arranged to be radially movable into and out of the recess 31 to be able to engage with the circumferential recess 105 of the main support portion 101. The recess 31 may be defined by the support surface 34 and the wall surface of the wall portion 45 extending from the support surface 34. The engagement portions 51, 52 may be arranged in an opening of the wall portion 45.

[0450] As per Figure 5 As shown in the configuration of , in some embodiments, the engagement portions 51, 52 may be provided on opposite sides of the recess 31. The engagement portions 51, 52 may be arranged to be movable toward and away from each other. The engagement portions 51, 52 are arranged at a distance from the support surface 34, so that when the engagement portions 51, 52 are in a locked position in which they protrude into the recess 31, a space is provided for accommodating a portion of the main support portion 101 between the engagement portions 51, 52 and the support surface 34. For example, the latter space may be configured to at least partially accommodate the earlier described overhang portion 108 of the main support portion 101.

[0451] Example hidden operating components for operating the locking mechanism

[0452] The locking mechanism 50 may further include an operating member 53 for retracting the engagement portions 51, 52. In some embodiments, the operating member 53 may be positioned on the child seat 3 so that the operating member 53 is accessible only when the child seat 3 is rotated to an unlocked orientation that is different from the forward-facing or rearward-facing orientation of the child seat 3. Figure 7 The operating member 53 may be provided on a bottom portion of the child seat 3, such as in a bottom surface 68 of the child seat 3. In addition, the operating member 53 may be provided in a position such that the operating member is covered by the base when the child seat is in a forward facing or rearward facing orientation and is exposed only in an unlocked orientation.

[0453] exist Figure 7 , an unlocked orientation of the child seat 3 is shown. In the unlocked orientation, the main extension direction of the child seat 3, which corresponds to the viewing direction of the seated child, is inclined relative to the main extension direction of the base 2, which may correspond to the longitudinal direction of the base 2 or the direction of travel of the vehicle on which the base 2 is mounted. Figure 7In the configuration shown in , the main extension direction of the child seat 3 extends at about 90° relative to the main extension direction of the base 2. In addition, the width of the bottom portion of the interface 30 of the child seat 3 and the width of the base 2 are both narrower than the length of the bottom portion of the interface 30 of the child seat 3. Therefore, when the child seat 3 is rotated to the position shown in FIG. Figure 7 When the orientation shown in , the front end portion corresponding to the foot end of the child seat 3 protrudes beyond the lateral edge portion of the base 2. Figure 7 As shown in FIG. 1 , the operating member 53 may be provided in the bottom surface 68 at the front end portion of the child seat 3. Due to this configuration, the operating member 53 is Figure 7 The child seat 3 is accessible in the orientation shown in FIG. 1 and is revealed or hidden when the child seat 3 is rotated into the driving position in which the main extension direction of the seat and the main extension direction of the base are parallel.

[0454] Example locking mechanism in an interface portion for a child seat

[0455] Will refer to Figure 4 and 6 Additional details of the locking mechanism 50 are described. Figure 4 Possible configurations of the engagement portions 51 , 52 are shown. Figure 6 The internal structure of the mechanism for operating the engaging portions 51, 52, and in particular the mechanism for operably coupling the operating member 53 to the engaging portions 51, 52, is shown. Figure 6 Details of the construction of locking mechanism 50 are shown according to some embodiments.

[0456] As already mentioned above, the locking mechanism 50 may include an operating component 53. In the present construction, the operating component 53 is configured to be pulled by a user. More precisely, the operating component 53 is configured to be pulled by a user in the main extension direction of the seat 3. The operating component 53 may be provided at an edge portion of the seat 3. In addition, the operating component 53 may be provided in (e.g., integrated in) a bottom surface 68 of the seat 3. The operating component 53 may be arranged at an edge portion of the seat interface 30. In particular, the operating component 53 may be provided at a foot end portion of the seat 3. The operating component 53 is configured to be grasped by a user. To this end, the operating component 53 may include a recess for receiving the fingertips of the user. The operating component 53 is operably connected to the coupling portions 51, 52. To this end, a force transmission component 60 is provided to connect the operating component 53 with the coupling portions 51, 52. Each force transmission component 60 may include a Bowden cable.

[0457] The force transmission member 60 may be a part of a force transmission mechanism for operably coupling the operating member 53 to the engagement portions 51, 52. The locking mechanism 50 may be configured such that the movement direction of the engagement portions 51, 52 extends transversely to the movement direction of the operating member 53. Figure 6In the example shown in , the movement direction of the engagement parts 51, 52 is substantially perpendicular to the movement direction of the operating member 53. The locking mechanism 50 can be configured so that the pulling action acting on the operating member 53 causes the engagement parts 51, 52 to move in the retracting direction, for example, causing the engagement parts 51, 52 to move away from each other in opposite directions. The engagement parts 51, 52 can be biased in the locking direction by means of a pushing member 67. In the illustrated configuration, the pushing member 67 can be configured to apply a pushing force directly on the engagement parts 51, 52. However, it is also possible to implement a configuration in which the pushing force of the pushing member is indirectly applied to the engagement parts 51, 52 by means of a force transmission member, for example, by means of the aforementioned force transmission member 60. However, in this case, the force transmission member can be provided as a rigid member, such as a rod or a rod, so as to be able to transmit a sufficiently high pushing force on the engagement parts 51, 52.

[0458] In such Figure 6 In the configuration shown in FIG. 5 , it is shown that the engagement portions 51, 52 may be arranged to be movable relative to the support portion 65. The support portion 65 may be configured to appropriately hold and guide the force transmission member 60 so that it is possible to appropriately connect to the engagement portions 51, 52 to allow sufficient force transmission. The support portions 65 each include a guide portion 63, 64. The guide portions 63, 64 are configured to securely hold the force transmission member 60. In the configuration shown in FIG. Figure 6 In the configuration shown in , the force transmission member 60 is a Bowden cable and the guide portions 63 , 64 are configured to hold the Bowden cable with a predetermined curvature to allow for optimal functioning of the Bowden cable.

[0459] The support portions 65 may be symmetrically constructed so that they can be used on opposite sides of the recess 31. To this end, the support portion 65 may include two guide portions 63, 64, but only one guide portion is required to operate the engaging portions 51, 52. By using such a symmetrical structure, it is possible to reduce manufacturing costs because the support portion 65 can be used at different positions. The push member 67 may be supported on the inner surface of the support portion 65 at one end, and may be supported on the engaging portions 51, 52 at the opposite end. Therefore, the push member 67 may be sandwiched between the support portion 65 and the engaging portions 51, 52.

[0460] like Figure 6As shown in the construction of , the end portion of the Bowden cable 60 can be connected to the central portion of the joint parts 51, 52. In this case, two pushing members 67 can be provided on opposite sides of the connected Bowden cables. In this way, it is possible to apply appropriate forces on the joint parts 51, 52 without affecting any tilting movement of the joint parts 51, 52. The first end portion 61 of the force transmission member 60 (in this case, the Bowden cable) is connected to the operating member. The second end portion 62 of the force transmission member 60 is connected to the joint parts 51, 52. Since the support portion 65, the joint parts 51, 52 and the force transmission member 60 are constructed identically, the operation of the operating member 53 causes the joint parts 51, 52 to operate simultaneously to the same extent.

[0461] Possible configurations of the joining parts 51, 52 are Figure 4 . The engaging portions 51, 52 may each include a locking member 54 which may be provided by a rigid body. The locking member 54 may include a guide portion 59 protruding from a lateral side of the locking member 54. At the rear end portion, the locking member 54 may include a recess 57 for accommodating an end portion of the force transmitting member 60 and an opening 58 allowing the force transmitting member to enter the recess 57. The front end portion of the locking member 54 may form an engaging portion of the locking member 54. The engaging portion may include a locking surface 55 and optionally a guide surface 56. For example, the locking surface 55 is oriented in an upward direction so as to be able to contact the overlapping portion 108 of the main support portion 101.

[0462] When the engaging portion 51 is mounted on the interface 30 of the seat 3, the guide surface 56 may be oriented in a downward direction, for example, away from the support surface 34. The guide surface 56 is tapered and configured to contact the outer edge portion of the upper portion 107 of the main support portion 101. The guide surface 56 may be configured so that when the guide surface contacts the upper portion 107 of the main support portion 101 when the seat 3 is mounted on the main support portion 101, an urging force that urges the engaging portions 51, 52 in the retracting direction is generated when the child seat 3 is moved relative to the main support portion 101 in the direction opposite to the first direction D1. In this way, the movement of the engaging portions 51, 52 to the retracted position is automatically achieved by pushing the guide surface 56 onto the upper portion 107. More precisely, the guide surface 56 is configured to slide on the outer edge region of the upper portion 107, and due to the gradual narrowing of the guide surface 56, the engaging portions 51, 52 are urged toward the retracted position. Once the engagement portions 51, 52 have passed the overhanging portion 108, they are free to engage with the circumferential recess 105. Due to the presence of the urging member 67, the engagement portions 51, 52 then automatically engage with the circumferential recess 105. Therefore, the user does not need to operate the operating member 53 to insert the child seat 3 onto the main support portion 101.

[0463] Example child seat with chamfered insert opening in interface portion

[0464] like Figure 5 As further shown in FIG. 1 , the recess 31 of the child seat 3 may be configured with an inclined circumferential wall portion 44 at the opening end portion of the recess 31. In the inclined circumferential wall portion 44, the outer diameter of the recess 31 decreases from the opening toward the support surface 34 at least within a predetermined distance. In other words, in the opening end portion of the recess 31, the outer diameter of the recess may be widened to a diameter larger than the diameter of the upper portion 107 of the main support portion 101. With this structure, since the opening for receiving the upper portion 107 is enlarged, it is easy to install the seat 3 on the main support portion 101. In addition, since the seat 3 is automatically centered relative to the main support portion 101 by the sliding contact of the inclined circumferential wall portion 44 with the upper portion 107 of the main support portion 101, this structure provides a centering function.

[0465] Example Configuration of Secondary Supporting Portion

[0466] like Figure 1 and Figure 2 As shown in Fig.82 In the configuration of, the base 2 may include secondary support portions 102, 103. In this exemplary configuration, two secondary support portions 102, 103 may be provided. The primary support portion 102 may be provided in a front end portion of the base 2. The secondary support portion 103 may be provided in a rear end portion of the base 2. The secondary support portions 102, 103 may be radially spaced apart from the primary support portion 101. Each of the secondary support portions 102, 103 may be configured to receive a restraint portion 32, 33 of a child seat 3. In this regard, reference is made to Figure 5 and 7 , which shows a possible configuration of the restraint parts 32, 33 of the child seat 3. The function and configuration of the restraint parts 32, 33 will be described in more detail later.

[0467] At least one of the secondary support portions 102, 103 may be configured to receive the restraint portion 32, 33 of the child seat 3 by rotating the child seat 3 around the rotation axis R1 after the child seat 3 is inserted onto the main support portion 101. Therefore, the secondary support portions 102, 103 and the restraint portions 32, 33 may be configured so that the restraint portions 32, 33 may be rotatably inserted only into the secondary support portions 102, 103. Each of the secondary support portions 102, 103 may be configured to restrict the tilting movement of the child seat 3 around a second rotation axis R2 extending perpendicular to the rotation axis R1.

[0468] Example drop zone

[0469] The secondary support portions 102, 103 and the restraint portions 32, 33 of the child seat 3 may be configured so that the insertion of the child seat 3 on the base 2 may be within a predetermined drop zone. The drop zone may be considered as an angular range α in which the child seat 3 needs to be oriented to couple it to the base 2. The drop zone may also be considered as an angular range α in which the restraint portions 32, 33 need to be positioned to allow the child seat to be inserted onto the main support portion 101. Within this angular range, the restraint portions 32, 33 are oriented so that they do not overlap with the secondary support portions 102, 103 when viewed from above, and may pass the secondary support portions 102, 103 in the lateral direction. Fig.53 This drop zone is shown in . The angular range may be greater than 90° on each lateral side of the main support portion 101. The range may be greater than 100°, for example 112°.

[0470] Example mount to eliminate gaps in the secondary support section

[0471] At least one secondary support portion 102, 103 may be configured to apply a pushing force in a downward direction to the inserted constraint portion 32, 33. At least one secondary support portion 102, 103 may include a pushing member 609, such as a spring leaf 610, such as in Fig. 9 When the restraining portions 32, 33 are received in the secondary supporting portions 102, 103, the urging member 609 is configured to apply an urging force to the restraining portions 32, 33 in a second direction D2 opposite to the first direction D1.

[0472] Example to prevent misuse of components / rotation blocks

[0473] In some embodiments, the insertion geometry of at least one secondary support portion 103 can be mechanically coded to prevent the child seat 3 from being positioned in an undesirable orientation. In particular, in some embodiments, the insertion geometry of at least one secondary support portion 103 can be mechanically coded to prevent the child seat from being positioned in a forward facing orientation. For example, the insertion geometry can be such that only restraint portions 32, 33 having a specific shape are allowed to be received in the secondary support portion 103.

[0474] Figure 8 , a possible mechanical encoding of the rear secondary support portion 103 is shown in FIG. In this example, the secondary support portion 103 may include an abutment portion 120. The abutment portion 120 is configured to limit the rotation of the child seat 3 around the rotation axis R1 toward a forward-facing orientation. The abutment portion 120 is configured to contact a stop portion 35 provided on the child seat 3. In this embodiment, the abutment portion 120 may include abutment surfaces 121, 122. Each abutment surface 121, 122 is configured to contact a stop portion surface 36, 37 provided on the stop portion 35 of the child seat 3, as exemplarily shown in FIG. Figure 5The abutment surfaces 121, 122 may be formed such that when the stop portion 35 is pushed against the abutment portion 120 when the child seat 3 is rotated, the stop portion 35 is pushed in a second direction D2 opposite to the first direction D1. Figure 8 In the configuration shown in , the abutment surfaces 121 , 122 are inclined.

[0475] The at least one secondary support portion 102 may be configured to automatically lock the child seat 3 in rotation about the rotation axis R1 when the child seat 3 reaches a rearward facing orientation when rotating the child seat, for example rotating the child seat about the primary support portion 101 .

[0476] Example pedestal that allows forward-facing orientation via manual interaction

[0477] In some embodiments, at least one secondary support portion 102 may be configured such that the child seat 3 is normally blocked from reaching a forward facing orientation and can only be rotated to a forward facing orientation upon actuation of an actuation member 119 by a user. The actuation member 119 may be, for example, Figure 1 and Figure 2 Set up as shown.

[0478] A blocking portion movable between a blocking position and a non-blocking position may be provided. The blocking portion may be biased toward the blocking position. In the blocking position, the blocking portion provides a stop for the child seat 3. In the blocking position, the blocking portion may protrude into the rotation path of a child seat portion, such as the rotation path of a restraining portion. In the non-blocking position, the blocking portion is moved away so as not to block the rotation of the child seat 3. The blocking portion can be operably coupled to an actuating member 119. Two actuating members may be provided on opposite lateral sides of the base body 20 and configured to be pushed inwardly by a user in a lateral direction of the base 2.

[0479] Example base with locking mechanism having blocking and locking functions

[0480] The blocking function described above can be implemented in a locking mechanism, for example in the locking mechanism 500 described herein. Therefore, the locking mechanism can include a dual function, namely a function of generally preventing the child seat from rotating to a forward-facing orientation unless the user allows such rotation by operating the actuating member; and a function of preventing the rotation of the child seat 3 after the forward-facing orientation and / or the rearward-facing orientation of the child seat 3 is established. The blocking portion can be a locking member 501 of a locking mechanism to be further described below. In other words, the locking member 501 of such a locking mechanism can also form a blocking portion. The actuating member 119 can be a release member 502 of the locking mechanism 500.

[0481] The locking mechanism 500 may be configured to lock the rotation of the child seat 3 about the rotation axis R1 when the seat is oriented in a desired orientation, such as a forward-facing orientation or a rearward-facing orientation, such as by engaging with a restraining portion of the child seat 3. The locking mechanism 500 may be configured to allow the child seat 3 to rotate about the rotation axis R1 so as to orient the child seat 3 in a rearward-facing orientation.

[0482] The locking mechanism 500 may be configured to normally prevent the child seat 3 from rotating about the rotation axis R1 into a forward facing orientation. The actuation member 119 may be a button.

[0483] Fig.11 and Fig.12 Some basic features of possible configurations of the locking mechanism 500 are shown in FIG. Fig.31 , 50 and 51 describe further optional features of the locking mechanism.

[0484] The locking mechanism 500 may be provided in the front secondary support portion 102. The locking mechanism 500 may include a locking member 501. The locking member 501 may be movable between a locking position, in which the locking member may engage with the restraining portions 32, 33 of the child seat, and a release position, in which the rotation of the child seat 3 around the rotation axis R1 is not hindered. In other words, in the locking position, a forced lock may be established between the inserted restraining portion and the locking member 501, and in the release position of the locking member 501, the locking member 501 is disengaged from the restraining portions 32, 33.

[0485] like Fig.12 As shown in , the locking member 501 may be biased by the pushing member 503. The locking member 501 may be biased so that the movement of the locking member 501 to the release position is possible only when overcoming the pushing force applied by the pushing member 503. In other words, the biasing force of the pushing member 501 may act on the locking member 501 to move it to the locking position. The pushing member 503 may be a spring.

[0486] Example of automatic locking of a rear-facing child seat

[0487] The locking mechanism 500 may be configured to be operable by an operating force applied thereto by the child seat 3 to allow the child seat 3 to be rotated to a rearward-facing orientation without manual interaction, such as by pushing the actuation member 119 / release member 502. For example, the operating force may be generated by converting a rotational force applied to the child seat 3 into an operating force. Figure 5 and Fig.11In one configuration shown, the operating force can be generated by sliding contact between a surface portion of the child seat 3 and a surface portion of the locking component 501. In general, the operating force for actuating the locking mechanism 500, in particular, the operating force for moving the locking component 501 to the release position, can be achieved by the pushing force applied by the child seat 3 to the locking component 501.

[0488] The locking member 501 may include a force-bearing surface 504 extending such that when the child seat 3 rotates about the rotation axis R1 and contacts the locking member 501, an operating force may be generated by sliding contact between the force-applying surfaces 42, 43 on the child seat 3 and the force-bearing surface 504. The force-bearing surface 504 may extend obliquely relative to the longitudinal middle plane of the locking member 501. The force-bearing surface 504 may be inclined relative to the moving direction of the locking member 501. Fig.30 Additional details of the locking member 501 and the force bearing surface 504 are described.

[0489] Figure 5 , a possible configuration of the force application surfaces 42, 43 on the child seat 3 is shown. The force application surfaces 42, 43 may be provided on the lateral sides of the restraint portion 32. The restraint portion 32 may be a restraint portion engaged by a locking mechanism 500 in the front secondary support portion 102 when the child seat is rotated to a rearward-facing orientation. The force application surfaces 42, 43 are arranged so that their imaginary extensions intersect each other at positions located outside the restraint portions in a radial direction. In other words, the restraint portion 32 gradually tapers on its lateral sides toward its free end portion. In this way, when the restraint portion 32 is rotated into the front secondary support portion 102, the force application surfaces 42, 43 are configured to push open the locking member 501.

[0490] On the other hand, the child seat 3 may include stop surfaces 39, 40 disposed on the lateral sides of the restraint portion 33. The restraint portion 33 may be a restraint portion received and engaged by the locking mechanism 500 when the child seat is oriented in a forward-facing orientation. Such stop surfaces 39, 40 and / or locking member 501 may be configured such that the above-described operation of the locking member 501 is not possible by an operating force applied thereto by the child seat 3. Thus, it is not possible for the child seat 3 to be rotated into a forward-facing orientation without manual interaction. Instead, the stop surfaces 39, 40 and the locking member 501 are configured such that the locking member 501 acts as a stop, and the forward-facing orientation of the child seat 3 can only be achieved by first manually moving the locking member 501 to an unlocked or unblocked position by operating the actuating member 119 or the release member 502.

[0491] Example internal structure of the front secondary support portion and locking mechanism

[0492] Fig.12500 and the locking mechanism 500. In the illustrated configuration, the locking member 501 is arranged to be linearly movable in the support structure 512. The support structure 512 may include two retaining portions 514 configured as gripping portions, similar to those described with reference to FIG. Figure 8 The gripping portions 603, 604 of the retaining structure 600 as described in other parts of this specification. The retaining portion 514 can be configured in the shape of a hook having a free end extending in a downward direction so as to be able to surround a portion of the restraining portion from above. The support structure 512 can include a bottom portion 518, which is configured to be fixed to the body of the base 2. In addition, the support structure 512 can also include two wall portions 520, 522, which extend in an upward direction from the lateral ends of the bottom portion 518 and extend substantially vertically from the bottom portion 518. The retaining portion 514 is provided in the upper end portions of the wall portions 520 and 522. The locking member 501 is arranged between the wall portions 520, 522. In addition, the locking member 501 is arranged so that the engaging portions 505, 506 and the retaining portion 514 face the same direction, for example, toward the main support portion 100 of the base 2.

[0493] As already mentioned above, the locking mechanism 500 may include a release member 502, which is also referred to as an actuating member 119. In particular, the locking mechanism 500 may include two release members, which are arranged on opposite sides of the locking member 501, but only one of the release members will be described below. Therefore, in some configurations, two release members 502 or actuating members 119 may be provided to operate a single locking member 501. The release member 502 is operably coupled to the locking member 501. The release member 502 may include a force transmission portion 540. The force transmission portion 540 is connected to the locking member 501 via a connecting rod 546. The force transmission portion 540 extends through an opening 521 provided in the wall portion 521. The release member 502 is configured to be linearly movable along the extension direction of the force transmission portion 540.

[0494] The force transmission portion 540 can be formed straight. The release member 502 may include a pushing member 542, such as a spring. The pushing member 542 may be arranged so that one end of the pushing member 542 cooperates with the release member 502, while the other end of the pushing member 542 is supported against the main body of the base 2. The pushing member 542 is arranged to bias the release member 502 toward the locking position. In general, the release member 502 is configured to move between the locking position and the release position. The release member 502 is connected to the locking member 501 so that when the release member 502 is in the release position, the locking member 501 is in the release position, and when the release member 502 is in the locking position, the locking member 501 is in the backup position described in other parts of this specification, but can be moved to the locking position.

[0495] Further details of the locking mechanism and its operation via the release member 502 will be referred to in Fig.50 and 51 As already mentioned above, the force transmission part 540 is connected to the locking member 501 via a connecting rod 546. The connecting rod 546 may include a first end portion 548 and a second end portion 550. The first end portion 548 may be rotatably and slidably held in one of the two guide grooves 528 provided in the rear portion of the locking member 501. The guide grooves 528 may be parallel to each other and extend along the main extension direction of the locking member 501. The second end portion 550 may be hingedly connected to the free end portion of the force transmission part 540. The second end portion 550 may include a cylindrical protrusion, which is slidably received in the opening of the force transmission part 540.

[0496] Fig.50 A configuration is shown in which the release member 502 is in a locked position, and Fig.51 1 and 2 show a configuration in which the release member 502 is in a release position. As is apparent from the following figures, when the release member 502 is released from Fig.52 Move the lock position shown in Fig.51 , the first end portion 548 of the link 546 rotates about the second end portion 550, while the second end portion 550 translates toward the locking member 501. Since the first end portion 548 is slidably held in the slot 528, the locking member 501 is movable relative to the first end portion 548 when the release member 502 is in the locked position. In this way, the locking member 501 can be pushed toward the release position by applying a force to the locking member by the force applying surface of the constraint portion as described in other parts of this specification.

[0497] As can be inferred from the above, a locking mechanism 500 can be provided which can include two independent release members 502 or actuation members 119 connected to a single locking member 501. Such a locking mechanism 500 can be configured to allow the child seat 3 to be rotated to a forward-facing orientation only when one of the two independent release members 502 is manually operated, and can also be configured to lock the rotation of the child seat 3 out of the forward-facing orientation and / or the rearward-facing orientation once the forward-facing orientation or the rearward-facing orientation is reached.

[0498] Example retention structure in the secondary support portion

[0499] like Fig. 9 and Fig.10As shown in , the base may include a retaining structure 600 for preventing the restraint portions 32, 33 from lifting from the base 2 to prevent rotational movement of the child seat 3 in the event of a crash. The retaining structure 600 may be at least partially disposed in the secondary support portions 102, 103. In some embodiments, the secondary support portions 102, 103 may include the retaining structure 600 or at least a portion of the retaining structure 600.

[0500] The retaining structure 600 may include one or more retainers 601, 602. The retainers 601, 602 may include gripping portions 603, 604 that may have a hook shape. Each retainer may be configured to receive one of the restraint portions 32, 33. In some configurations, the retainers 601, 602 may be forcefully coupled to the coupling portion 202, which is configured to engage with the fixed structure 96 in the vehicle seat 90.

[0501] The coupling portion 202 may be provided on the coupling assembly 200, or may be part of the coupling assembly, as will be described later. The coupling assembly 200 may include a connector, such as a coupling arm, and the coupling portion 202 may be provided in a free end portion of such a connector. The coupling portion 202 may be retained on the base 2 so as to be adjustable or movable on the coupling assembly, thereby allowing the base 2 to be tightened on the vehicle seat 90.

[0502] like Fig.10 As shown in , each retainer 601, 602 can be force-transmittingly coupled to the coupling portion 202 via a force transmission path including rigid force transmission links 605, 606, 607. The force transmission links can be made of metal to allow for a secure transmission of larger forces. At least one force transmission link may include a coupling portion support frame 606, 607. The coupling portion support frame 606, 607 may be configured to support a connector, such as a coupling arm, including the coupling portion 202, such as an Isofix arm. Therefore, in some embodiments, the coupling portion support frame may also be considered an Isofix arm support frame.

[0503] The coupling part support frame 606,607 may include a U-shaped shell having side walls extending upward. The coupling part 202 may be supported on the coupling part support frame 606,607. Each retainer 601,602 may be connected to the coupling part support frame 606,607 by a coupling member 605, which is a rod 608 in the illustrated configuration. When the number of force transmission connecting rods is small, a particularly advantageous force transmission can be achieved. For example, each retainer 601,602 may be connected to the coupling part support frame 606,607 only by a single coupling member 605. The coupling member 605 may be directly connected to the coupling part support frame 606,607, for example directly connected to two upwardly extending walls of the U-shaped shell of the coupling part support frame 606,607.

[0504] Example tensioning mechanism for a base

[0505] Possible features of a tensioning mechanism 400 for a base 2 will be described below. A base 2 for a child restraint system 1 may include such a tensioning mechanism 400 in addition to or as an alternative to the mechanisms and features of a base 2 for a child restraint system described herein.

[0506] Once the base 2 is operatively coupled to the fixed structure 96 of the vehicle via the coupling assembly 200 , the tensioning mechanism 400 may be configured to generate a pushing force for pushing the base 2 onto the vehicle seat 90 .

[0507] Figure 1 The arrangement of the tensioning mechanism 400 is shown on the base 2. Figure 1 The base 2 shown in FIG. 1 may be coupled to a fixed structure 96 of a vehicle via a coupling assembly 200 . The tensioning mechanism 400 may be configured to exert a force on the coupling assembly 200 .

[0508] The coupling assembly 200 may include the functions described above and / or the functions further described below. For example, the coupling assembly 200 may include a coupling portion 202 configured to releasably engage with a fixed structure 96 on the vehicle. The fixed structure on the vehicle may be a bracket, such as a bracket of an Isofix fixed structure. The coupling assembly 200 may include one or more connectors 204, 206. The connector may be formed as a coupling arm, or may include a coupling arm. Each connector 204, 206 may include the aforementioned coupling portion 202. In some embodiments, the connectors 204, 206 may be configured as Isofix system connectors to allow the base 2 to be fixed to the seat 90 by the Isofix fixed structure. However, it should be noted that other mechanisms and features may also be used to couple the base 2 to the vehicle seat 90. For example, existing components of the vehicle's seat belt system, such as seat belts and / or seat belt locks, may be used to connect the base to the vehicle seat 90. The links 204, 206 may be connected to each other by a connecting portion, such as a belt or a rigid component. The tensioning mechanism 400 may be configured to exert a force, such as a tensile force, on the links 204 , 206 and / or such connecting portions.

[0509] The tensioning mechanism 400 may be configured to generate a urging force for urging the base 2 onto the vehicle seat 90 after the base 2 is operably coupled to the fixed structure 96. In other words, the base 2 may be configured so that the base 2 must first be coupled to the fixed structure. Thereafter, the tensioning mechanism 400 may be operated to generate a urging force for urging the base 2 onto the vehicle seat 90. Using the tensioning mechanism 400 allows the base 2 to be fixedly tightened on the vehicle seat 90.

[0510] In general, for this and all other embodiments, unless it is specifically stated that the child seat 3 can be detachably or releasably mounted to the base 2, the base 2 can also be an integral part of the child seat 3. The base does not have to be a separate component. In contrast, the base 2 can also be an integral part of the child seat 3, in other words, the child seat 3 and the base 2 can be non-releasably coupled.

[0511] The tensioning mechanism 400 may be configured such that a pulling force is generated on the fixed structure 96 or a member of the seat belt system of the vehicle in order to generate a pushing force for pushing the base 2 onto the vehicle seat 90. Therefore, by operating the tensioning mechanism 400, a pushing force may be generated by applying a pulling force to the fixed structure or the seat belt system member through an operational connection established between the base 2 and the fixed structure 96 or with the seat belt system member.

[0512] The tensioning mechanism 400 may include an operating member 402. The operating member 402 may include or may be configured as a lever 404. The tensioning mechanism 400 may be configured so that a user can generate a pushing force by repeatedly moving the operating member 402 of the tensioning mechanism 400 back and forth. In other words, the tensioning mechanism 400 may be configured so that a pushing force for pushing the base 2 onto the vehicle seat 90 may be generated by performing an action similar to pumping air on the operating member 402.

[0513] As mentioned above, the base 2 may include a coupling portion 202 for fixedly coupling the base 2 to the fixed structure 96. In addition, in some configurations, the base 2 may include an anti-rebound portion 300 configured to contact the backrest 92 of the vehicle seat 90 for at least limiting the rotational movement of the base 2 toward the backrest 92 in the event of a crash.

[0514] In some configurations, the tensioning mechanism 400 may be configured to reduce the distance between the anti-rebound portion 300 and the coupling portion 202. For example, in some configurations, the distance between the anti-rebound portion 300 and the coupling portion 202 may be reduced by moving the coupling portion 202 relative to the anti-rebound portion 300. In some configurations, the distance between the anti-rebound portion 300 and the coupling portion 202 may be reduced by moving the anti-rebound portion 300 relative to the coupling portion 202. Thus, the distance may be reduced by moving the anti-rebound portion 300 and the coupling portion 202 relative to each other. A configuration may also be provided in which both the anti-rebound portion 300 and the coupling portion 202 move relative to the main body 20 of the base and toward each other, for example, the anti-rebound portion 300 moves away from the main body 20, while the coupling portion 202 moves toward the main body 20.

[0515] Example tensioning mechanism moving forward and backward

[0516] Figure 1 A configuration is shown in which the base 2 may include a coupling portion 202, an anti-rebound portion 300, and a tensioning mechanism 400. The tensioning mechanism 400 is configured so that a user can reduce the distance between the anti-rebound portion 300 and the coupling portion 202 by repeatedly moving the operating member 402 back and forth. Below, details of a possible configuration of the tensioning mechanism 400 will be presented with reference to the drawings, in which a pushing force can be generated by repeatedly moving the operating member 402 back and forth.

[0517] Will refer to Figure 1 , Fig.15 and Fig.16The basic general functions of a possible construction of the tensioning mechanism 400 are described. The operating part 402 is force-transmittingly connected to the connecting part 202. In the illustrated construction, the operating part 402 is a lever 404. The lever 404 may be a bent lever 404, in particular a U-shaped lever. In the illustrated construction, the lever 404 is U-shaped and may be pivotably held at its free end about a pivot axis P1. The pivot axis P1 may extend in a transverse direction C of the base 2. For example, in some embodiments comprising a main support part 101 as described elsewhere in this specification, the lever 404 may be supported on opposite sides of the main support part 101. Thus, the lever 404 may be able to rotate toward the front end part 4 of the base 2 and be able to rotate back toward the rear end part 5 of the base 2.

[0518] Lever 404 may be able to Figure 1 The collapsed position shown in Fig.15 . In the stowed position, the lever 404 may be in a position where the lever is accommodated in the base so that it does not protrude beyond the upper surface portion 118 of the base 2. To this end, a recess may be arranged in the upper surface portion 118 of the base 2. The recess may have a shape corresponding to the shape of the lever 404 so that the lever can be received in the recess when the lever 404 is in the stowed position. For example, the recess and the lever 404 may be shaped so that in the stowed position, the upper surface of the lever 404 and the upper surface portion 118 are substantially flush, so that the transition between the lever surface and the upper surface of the upper surface portion 118 is substantially seamless. In the upper surface portion 118, a recess 22 may be provided so as to allow the operating member 402 to be grasped when the operating member 402 is in the stowed position. The recess 22 may be integrally formed with a recess for accommodating the lever 404 in the stowed position. In other words, the recess for accommodating the operating member 402 in the stowed position may be widened at a predetermined portion so that at least in such widened portion, the lever is not tightly received in the recess but can be grasped by the user.

[0519] like Fig.16 As shown in , the lever 404 can move forward and backward, as indicated by the two arrows. This in turn causes the distance between the coupling portion 202 and the anti-rebound portion 300 to decrease as described. Fig.16 In the configuration of , the coupling portion 202 is configured to be movable toward and away from the anti-rebound portion 300 by operating the lever 404. For example, the coupling portion 202 may be movable translationally in the moving direction L1. In other words, the coupling portion 202 may be retracted toward the main body 20 of the base 2.

[0520] Therefore, if Fig.16It can be inferred that a configuration may be provided in which the tensioning mechanism 400 is configured to move the coupling portion 202 relative to the anti-rebound portion 300. In particular, the tensioning mechanism 400 may be configured to translate the coupling portion 202, for example, along the longitudinal movement direction L1.

[0521] As mentioned above, a tensioning mechanism 400 may also be provided, which is configured to move the anti-rebound portion 300 relative to the coupling portion 202. Fig.26 . In the illustrated construction, the anti-rebound portion 300 can be coupled to the body 20 of the base 2 so that it can be moved toward and away from the body 20. Thus, the distance between the anti-rebound portion 300 and the connecting portion 202 can be reduced by moving the anti-rebound portion 300 closer to the connecting portion 202. Under this construction, the body 20 of the base 2 can remain fixed relative to the connecting portion 202. In other words, the body 20 and the connecting portion 202 can be arranged at a predetermined fixed distance so that operation of the tensioning mechanism 400 does not change the position of the body 20 relative to the fixed structure 96 to which the connecting portion 202 is coupled. In contrast, after the base 2 is coupled to such a fixed structure 96, the anti-rebound portion 300 can be moved toward the backrest of the vehicle seat 90 and away from the body 20 by operating the tensioning mechanism 400. The tensioning mechanism 400 may be configured to move the anti-rebound portion 300 translationally and / or rotationally relative to the body 20. To illustrate this point, Fig.26 The smaller depiction at the upper left in the middle depicts the translational movement of the anti-rebound portion 300 , and the smaller depiction at the upper right illustrates a configuration in which the anti-rebound portion 300 moves by rotating about the main body 20 using a rotating arm.

[0522] Example tensioning mechanism with ratchet mechanism

[0523] In an embodiment including a tensioning mechanism 400, the operating component 402 may be force-transmittingly coupled to a movable part (e.g., the coupling part 202 or the anti-rebound part 300) that generates the urging force. A mechanical device may be provided that allows force to be transmitted to the movable part in only one direction while preventing force transmission in the opposite direction. For example, a ratchet mechanism 410 may be provided, such as in a force transmission path between the operating component 402 and the coupling part 202, allowing torque applied to the operating component 402 to be transmitted only in the tensioning direction. For example, the ratchet mechanism 410 may be provided to force-transmittingly couple the operating component 402 to an output component 422 (e.g., an output shaft), which in turn is force-transmittingly coupled to a coupling assembly 200 that includes the coupling part 202 as a movable part.

[0524] For example, Fig.17 and 18As shown in , both the operating member 402 and the output member 422 may be arranged to be pivotally movable about the pivot axis P1. The output member 422 may be received in the end portion of the operating member 402. More specifically, according to this configuration, the output member 422 may extend through the free end portion of the operating member 402 in the direction of the pivot axis P1. The operating member 402 may be retained on the output member 422. In the free end portion of the operating member 402, a ratchet mechanism 410 may be provided, which is configured to couple the operating member 402 to the output member 422. The ratchet mechanism 410 may be configured to allow the operating member 402 to move in one direction relative to the output member 422, and to lock the movement of the operating member 402 and the output member 422 in the opposite direction.

[0525] In the illustrated configuration, the ratchet mechanism 410 may be configured to move when the operating member 402 is moved from Fig.17 Move to the lowered position shown as Fig.18 When the operating member 402 is in the deployed position shown in FIG. 1 , the rotational force input to the operating member 402 is transmitted to the output member 422. Therefore, when the operating member 402 moves in a direction described later, the rotation of the operating member 402 is converted into a corresponding rotation of the output member 422. In other words, in the latter moving direction, i.e., in the tightening direction, the ratchet mechanism 410 couples the operating member 402 and the output member 422 so that they move as a whole.

[0526] The specific details of possible configurations of the ratchet mechanism 410 will be referred to in Fig.19 and Fig. 20 Give a description. Fig.19 A cross-section is shown through an end portion of the operating member 402 and the ratchet mechanism 410. It is noted that the ratchet mechanism 410 may be completely hidden in the end portion of the operating member 402 according to certain configurations.

[0527] The ratchet mechanism 410 may include a locking member 412. The locking member 412 can be movably held in the operating member 402 so that it can be moved toward the pivot axis P1 or away from the pivot axis P1. Therefore, the locking member 412 can be moved in a radial direction relative to the output member 422. The locking member 412 can be spring-loaded by a push member 418 (e.g., by a spring 420). In particular, according to the illustrated configuration, the locking member 412 can be biased toward the pivot axis P1 and the output member 422 by the push member 418, respectively.

[0528] The ratchet mechanism 410 may include an engagement portion 423 that may be configured so that it can move integrally with the output member 422. For example, the engagement portion 423 may include a gear 424. The engagement portion 423 may be an integral part of the output member 422, or may be rotationally interlocked with the output member 422. Fig.19 In the illustrated construction, the engagement portion 423 is configured as a gear 424 that is rotationally interlocked with the output member 421 via a connecting pin (not shown).

[0529] The locking member 412 may be configured to releasably engage with the engagement portion 423. The locking member 412 may be retained in the operating member 402 so as to be movable only in translation. When the operating member 402 is rotated, the locking member 412 rotates correspondingly. Therefore, when the locking member 412 engages with the engagement portion 423, the rotation of the operating member 402 may be transmitted to the output member 422.

[0530] The locking member 412 may include a front end portion 416 that is specifically configured to engage with the engagement portion 423. For example, the front end portion 416 may be configured to engage with the teeth 426 of the gear 424. According to the illustrated configuration, the teeth 426 are shaped so that the force can be applied in the tensioning direction ( Fig.19 The ratchet mechanism 410 is configured to allow force transmission in only one direction, i.e., Fig.19 In the clockwise direction.

[0531] As already mentioned above, the output member 422 can be coupled to the coupling part 202 in a force-transmitting manner. The rotation of the output member 422 can be converted into a linear movement of the coupling part 202. A configuration can be provided in which the distance between the coupling part 202 and the pivot axis P1 decreases when the tensioning mechanism 400 is operated. In other words, Fig.19 Moving the operating member 402 in the clockwise direction about the pivot axis P1 can be converted into a retracting movement of the coupling portion 202 toward the pivot axis P1.

[0532] Example tensioning mechanism with torque limiter

[0533] In some configurations, the output member 422 may be directly coupled to the driven portion 210 of the coupling assembly 200 via a force output member 470. The force output member may be a sprocket or gear 472. The output member 422 may be coupled to the force output member 470 via a torque limiting mechanism 490. By using such a torque limiting mechanism 490, a predetermined maximum torque transmitted to the coupling assembly 200 may be preset. Such a configuration may provide feedback to the user that a predetermined maximum tightening force has been reached.

[0534] Different configurations of the torque limiting mechanism 490 may be implemented. Fig. 22An example is given in . An exemplary torque limiting mechanism 490 may include a housing 491 that interlocks with the output member 422 so as to be rotatable as a unit with the output member 422. This interlock may be provided by a pin connecting the two components. The housing 491 may be cylindrical and may define a space between the output member 422 and the inner wall of the housing 491. Such space may be used to accommodate a push member 492 and an engagement member 493 at least partially accommodated therein. The engagement member 493 is retained in the housing 491 so as to be movable along the output member 422. The push member 492 is disposed between the engagement member 493 and the housing portion for biasing the engagement member 493 in an engagement direction.

[0535] The engagement member 493 is configured to engage with a receiving member 495, which may be force-transmittingly coupled to the force output member 470 or may be an integral part of the force output member 470. The engagement member 493 may include a protrusion 494 that protrudes in a direction along the extension direction of the output member 422. The receiving member 495 may include a recess 496 that is configured to receive the protrusion 494 in a positive locking manner. Therefore, when the protrusion 494 is received in the receiving member 495, positive locking in the rotational direction is achieved, thereby allowing the rotation of the output member 422 to be transmitted to the force output member 470. The protrusion 494 and the recess 496 may be shaped so that the engagement member 493 is pushed away from engagement with the receiving member 495 when the torque introduced into the torque limiting mechanism 490 by the output member 422 exceeds a predetermined maximum torque. In this case, due to the geometric structure of the protrusion 494 and the recess 496, the engagement member 493 is pushed in the release direction against the force of the pushing member 492. As a result, torque transmission may be interrupted.

[0536] As mentioned above, the tensioning mechanism 400 can be configured to transmit a tensioning force to the coupling portion 202. In some configurations, for example, Fig.17 and Fig.18 In the illustrated configuration, the tensioning force applied to the coupling portion 202 by the tensioning mechanism 400 may result in a retracting movement of the coupling portion 202, for example, toward the main body 20 of the base 2 or the main body 20 of the base. This retracting movement may in turn result in a pressing force applied to the vehicle seat back by the anti-rebound portion 300. Thus, when the tensioning mechanism 400 is operated, the anti-rebound portion 300 is clamped on the backrest, which in turn results in the coupling portion 202 being subjected to a tensioning force pulling them in a direction opposite to the retracting direction, in other words, a tensioning force in the extension direction.

[0537] In order to prevent the coupling portion 202 from moving in the extending direction, a configuration may be provided in which the movement of the coupling portion 202 in the extending direction is restricted. Fig. 20One possible configuration is shown in FIG. In this configuration, the coupling portion 202 is disposed on a connector 204, such as a coupling arm. The connector and / or the coupling arm may be movable relative to the retaining structure 600 in the coupling portion support frame 606 of the retaining structure 600. Fig. 20 The configuration shown in FIG. 4 is such that the operation of the tensioning mechanism 400, in other words, the movement of the pull rod 404 in the clockwise direction, causes the connector 204 to move in the retracting direction, which is consistent with the Fig. 20 corresponds to a rightward movement in .

[0538] The connector 204 may include a locking portion 214, and the retaining structure 600 may include a receiving portion 612. In the illustrated construction, the receiving portion 612 includes recesses equidistantly arranged along the direction of movement of the connector 204. The locking portion 214 is configured to be releasably engaged with the recess. A pushing member (not shown) is provided for biasing the locking portion 214 toward a locking position, in which the locking portion 214 engages with the recess. Therefore, as long as the connector 204 is in a position where the locking portion 214 is aligned with the recess, the locking portion 214 will automatically enter the recess. In this way, an interlock is provided between the retaining structure 600 and the connector 204, which at least prevents movement of the connector 204 in the extension direction, in other words, in the extension direction. Fig. 20 In this way, once the coupling part 202 is retracted to a specific position by the operation of the tensioning mechanism 400, the movement of the coupling part 202 in the extension direction is prevented. In this way, the coupling part 202 can be gradually retracted by the forward and backward movement of the operating member 402.

[0539] Example tensioning mechanism with indicator (pop-up feature)

[0540] In some embodiments, the child restraint system 1 can be configured to indicate to the user that an operating component can be used to tighten the base 2 onto the vehicle seat 90. In other words, a system can be provided that prompts the user to use a specific operating component to generate a force large enough to push the child restraint system 1 onto the vehicle seat. For example, by generating sufficient contact pressure between the anti-rebound portion 300 and the backrest 92 of the vehicle seat 90, resistance to rotation of the child restraint system toward the backrest 92 in the event of a crash can be provided.

[0541] An indication device will be described which is configured to indicate to a user when an operating member is ready for tensioning. In this regard, reference is made to Fig.13 , Fig.14 and Figure 23 to Figure 25 .

[0542] In general, the indicator device 450 can be provided at any suitable position of the child restraint system 1. In some constructions, the indicator device 450 can be provided on the base 2 of the child restraint system 1. Although a mechanical solution of the indicator device 450 will be described below, it should be noted that the indicator device can also be implemented electronically. In general, the indicator device can be configured to provide visual and / or audio indications to the user. The visual indication may include visible movement of a specific component or multiple specific components, a visual indication on a display device, or a light source indication. The audio indication may include a specific sound or voice message prompting the user to perform a specific action, such as tightening with an operating component. As a visual indication, the action to be performed by the user can be displayed on the display device 1000, such as Fig.13 and Fig.14 For example, such a display device 1000 may display an animation of how a specific part of the child restraint system 1 may be operated by a user.

[0543] The indicator device 450 may be provided in the base 2, which includes a coupling portion 202, an anti-rebound portion 300, and a tensioning mechanism 400. The coupling portion 202 may be configured to fixedly couple the base 2 to a fixed structure 96 of a vehicle, such as a fixed structure 96 on a vehicle seat 90. The anti-rebound portion 300 may be configured to contact the backrest 92 of the vehicle seat 90 so as to at least limit the rotational movement of the base 2 toward the backrest 62 in the event of a crash.

[0544] The tensioning mechanism 400 may be configured to reduce the distance between the anti-rebound portion 300 and the coupling portion 202. Other configurations of the tensioning mechanism are also possible as long as the tensioning mechanism can be easily used to generate a force that pushes the base 2 onto the vehicle seat 90. The tensioning mechanism 400 may include an operating member 402.

[0545] The indicator device 450 can be configured to indicate to the user when the operating member 402 is ready for tensioning. Fig.13 , Fig.14 and Figure 23 to Figure 25 In the configuration shown in , the indicating device 450 may be configured to move the operating member 402 to a predetermined indicating position. In the illustrated example, the operating member 402 is a lever 404. For example, Fig.13 and Fig.14 An exemplary predetermined indication position is shown. The indication position corresponds to a predetermined orientation of the operating member 402. Fig.13 and 14, the operating member 402 is slightly moved upward from the receiving recess provided in the body of the base 2. The indicating device 450 can be configured so that the movement of the operating member 402 to the position is quickly achieved when a specific condition is met. Such a condition can include a state change in the coupling portion 202, such as a state change of the coupling portion 202 from an unlocked state to a locked state, in which the coupling portion 202 is releasably locked to the fixed structure 96.

[0546] The tensioning mechanism may be configured such that, in order to actuate the tensioning mechanism, the operating member 402 moves between the stowed position and the deployed position, for example, moves forward and backward. In this regard, reference is made to the possible configurations of the tensioning mechanism 400 described above, which have been described in conjunction with other examples of exemplary configurations.

[0547] When the coupling portion 202 is engaged with the fixed structure 96, the indicator device 450 can be configured to automatically move the operating component 402 to the predetermined indication position. In addition or alternatively, the indicator device can also be configured to move the operating component to the predetermined indication position when the distance between the coupling portion 202 and the anti-rebound portion 300 is reduced to a predetermined intermediate distance. This reduction in the distance between the coupling portion 202 and the anti-rebound portion 300 can be achieved, for example, by pushing the base 2 toward the backrest 92 along the pushing direction P1 when the coupling portion 202 is engaged with the fixed structure 96.

[0548] An exemplary coupling assembly 200 will be described later, which includes a coupling portion 202 and is configured to allow the coupling portion 202 to retract into the body of the base 2 when the coupling portion 202 is locked to the fixed structure 96 and the base is pushed toward the backrest 92. This configuration may include a retraction blocking portion or a second locking portion 216 that blocks movement of the coupling portion 202 in a retracted direction as long as the coupling portion 202 is not locked with the fixed structure 96. The retraction blocking portion or the second locking portion 216 can be operably coupled to the coupling portion 202 so that when the coupling portion 202 is locked on the fixed structure 96, the retraction blocking portion 216 can automatically move to an unlocked or released position.

[0549] The indicating device 450 may include two mating portions 452, 454. For example, one of the two mating portions may be a toothed portion 452, and the other of the two mating portions may be a recessed portion 454. Thus, one of the mating portions may be a protruding portion, and the other of the two mating portions may be a receiving portion. At least one of the mating portions 452, 454 may be movable relative to the other, and the mating portions 452, 454 may be configured to enter a releasable engagement when a predetermined indication position is reached. One of the two mating portions may be operably coupled to the operating component 402, and the other of the two mating portions may be arranged to be fixedly in the base, for example, in the structure of the base body 20. The two mating portions 452, 454 may be configured to at least limit the movement of the operating component 402 away from and / or into the predetermined indication position.

[0550] Figures 23 to 25 A possible construction is shown in Fig.23 As shown in , at the position where the operating member 402 is coupled to the output member 422, a protrusion 452 is provided on the operating member 402. The protrusion 452 may be formed on the outer surface of the housing for accommodating the elements of the aforementioned ratchet mechanism 410. Therefore, when the operating member 402 rotates about the pivot axis P1, the protrusion 452 moves on a circumferential path about the pivot axis P1. The receiving portion or recessed portion 454 is provided in the main body 20 of the base 2 at a position where at least a portion of the receiving portion or recessed portion blocks the protrusion 452 when the protrusion 452 moves on the circular path. The receiving portion 454 may be configured as a protrusion having a central recess therein. The mating portions 452, 454 may be made of a material that is slightly deformable when the mating portions are in contact, and / or configured to be slightly deformable when the mating portions are in contact. Therefore, during its travel along the circular path, the protrusion 452 may contact the mating portion 455. In this position, further rotation of the operating part 402 and overall further movement of the protruding portion 452 on the circumferential path is possible only when a slightly increasing force is exerted on the operating part 402. If a predetermined force is exceeded, the protruding portion 452 can be deformed and pass over the edge portion of the mating portion 454 until it reaches the central recess in the mating portion 454. This position of the operating part 402 and the mating portion 452 corresponds to a predetermined indication position. In this position, the operating part 402 is only slightly moved to the position indicated by the projection 452. Fig.13 and Fig.14 454. The movement of the mating portion 452 into the central recess of the mating portion 454 may be accompanied by a click. Fig.24 , the user immediately realizes that the operating member 402 can be used for tightening purposes and can hold the operating member 402.

[0551] By applying a tensioning force to the operating member 402, the user can further rotate the operating member 402, for example Fig.25 402 is rotated in a clockwise direction as shown in the figure, and the operating member 402 is moved out of the indicated position. In this case, the protruding portion 452 is disengaged from the engagement portion 454, and the operating member 402 can be used to perform a forward and backward movement to operate the tensioning mechanism 400. It should be noted that the protruding portion 452 is disengaged from the engagement portion 454. Fig.23 The state shown in moves to Fig.24 The force required for the state shown in can be introduced into the operating part 402 by force transmission from the coupling part 202 and via the ratchet mechanism 410. More specifically, the base 2 can be configured so that when the coupling part 202 is locked and the urging force P1 as described above is applied, the coupling part 202 moves in the retracting direction, which causes a rotational force to be applied to the output part 422 due to the operative connection between the coupling part 202 and the output part 422. Since the movement of the coupling part 202 can correspond to the movement of the coupling part during tensioning using the operating part 402, the rotational force applied by the output part 422 to the operating part 402 causes the operating part 402 to move in the tensioning direction, which means that in Figure 23 to Figure 25 Moving in a clockwise direction in the configuration shown.

[0552] It should be further noted that the configuration and position of the mating portions 452 and 454 can be such that when the operating member 402 is located Fig.23 In the aforementioned stowed position shown, they are in contact with each other on the outside. This configuration requires a slightly higher force to rotate the operating member 402, because the protruding portion 452 must pass through a portion of the mating portion 454 by slight elastic deformation. Therefore, the accommodation or retention of the operating member 402 in the stowed position is more stable and is less prone to vibratory movement during vehicle driving. Therefore, unfavorable rattling noises caused by vibrations of the operating member 402 can be avoided.

[0553] Example mount with release mechanism

[0554] The child restraint system 1 may include a release mechanism 700. For example, the base 2 of the child restraint system 1 may include a release mechanism 700. The release mechanism 700 may be configured to release the coupling portion 202 from the fixed structure 96. Additionally or alternatively, the release mechanism 700 may also be configured to release the ratchet tensioning mechanism 400 to reduce the distance between the anti-rebound portion 300 and the coupling portion 202. The tensioning mechanism 400 may be a tensioning mechanism as described in conjunction with other configurations of the base 2 of the child restraint system 1 described herein. Additionally or alternatively, the release mechanism 700 may also be configured to release movement of the coupling portion 202 relative to the anti-rebound portion 300. Thus, a release mechanism 700 may be provided that provides one or more functions described later.

[0555] The release mechanism 700 may include at least one operating portion 702, 704. In some configurations, the operating portion 702, 704 may be disposed on the base 2 so as to be accessible only when the child seat 3 is removed from the base 2. In other words, the child seat 3 disposed on the base 2 makes the operating portion 702, 704 inaccessible. Figure 1 , 17 , 18 and 21 illustrate possible configurations of the base 2 of the child restraint system 1 . Figure 1 The base 2 in the embodiment may include a coupling portion 202 for releasably coupling the base 2 to a fixed structure 96 of the vehicle. The base may include a release mechanism 700. In the illustrated configuration, the release mechanism 700 may include all of the features mentioned above. More specifically, the release mechanism 700 is configured to release the coupling portion 202 from the fixed structure 96, to release the ratchet tensioning mechanism 400, and to release the movement of the coupling portion 202 relative to the anti-rebound portion 300. By operating the operating portions 702, 704 of the release mechanism 700, all of the functions described below are triggered.

[0556] In some configurations, the operating portions 702, 704 are provided on the upper surface portion 118 of the base 2 at locations covered by the inserted child seat 3. Thus, in such configurations, the child seat 3 may form a cover member covering the operating portions 702, 704.

[0557] In addition or alternatively, the base 2 may further include a cover member that can be moved between a covering position in which the cover member covers the operating portion and an exposed position in which the operating portion is accessible for operation. The cover member may be configured to move to the covering position when the child seat is inserted on the base. In the case of such a configuration, it is possible to provide the operating portion 702, 704 at a position of the base 2 that is not covered by the inserted child seat 3, while also having the function of making the operating portion 702, 704 inaccessible as long as the child seat 3 is inserted on the base 2. The mechanism for moving the cover member may include a force-bearing portion, which is operably connected to the cover member and is configured to receive a force from the child seat 3 when the child seat 3 is inserted on the base 2, wherein actuation of the force-bearing portion by the child seat 3 causes the cover member to move to the covering position.

[0558] The function of the release mechanism 700 described above implies that at least one operating part is arranged on the base 2 so that it can only be accessed when the child seat 3 is removed from the base 2. Independent of this function, the release mechanism 700 can also additionally or alternatively include two operating parts 702, 704, and the release mechanism 700 can be configured so that the base 2 can only be released from the fixed structure 96 by actuating the two operating parts 702, 704. The base 2 can only be released from the fixed structure 96 by actuating the two operating parts 702, 704 simultaneously or successively. Fig. 27 An exemplary configuration is shown in which the two operating portions 702, 704 are arranged to be laterally spaced apart from each other and located on opposite sides of the main support portion 101. As shown, the user needs to push the two operating portions 702, 704 to actuate the release mechanism. Example locations of the two operating portions 702, 704 are also shown in FIG. Figure 1 , 13 and Figure 15.

[0559] If the base 2 includes the tensioning mechanism 400 as described in conjunction with other configurations in the present disclosure, the release mechanism 700 may be configured to simultaneously release the coupling portion 202 and the tensioning mechanism 400. In other words, operating the release mechanism 700 may release the coupling portion 202 and the tensioning mechanism 400.

[0560] In some configurations, the operating portions 702, 704 may be disposed on opposite sides of the main support portion 101. The details of possible configurations of the main support portion 101 will be described in conjunction with other configurations mentioned in the present disclosure. Fig.18 and 21 As shown in, each operating component 702, 704 may include a coupling portion 706 for coupling the operating component 702, 704 to the coupling portion 202 in a force-transmitting manner. In the illustrated configuration, the coupling portion 706 is configured to be coupled to the end portion of the force transmission component. In this case, the coupling portion 706 is configured to be coupled to a Bowden cable. Therefore, the coupling portion 706 may include a recess for receiving the end portion of the Bowden cable. The opposite end portion of the Bowden cable may be coupled to the coupling portion 202, in particular to a locking component in the coupling portion 202, which allows or prevents movement of an engagement component that can be engaged with the fixed structure 96. The force transmission component may be adjustable to allow adjustment of the force transmission from the operating components 702, 704 to the coupling portion 702. Therefore, the operating portions 702, 704 allow the coupling portion 202 to be remotely operated to unlock the coupling portion 202.

[0561] The release mechanism 700 according to the illustrated construction is configured so that when the release mechanism 700 is operated, the tensioning mechanism 400 is deactivated by converting the tensioning mechanism 400 to a free rotation state. The tensioning mechanism 400 may include features and configurations as described herein with reference to other configurations and embodiments of the base 2 or child restraint system 1. The tensioning mechanism 400 may include an operating member 402 force-transmittingly coupled to the coupling portion 202 via a ratchet mechanism 410. The release mechanism 700 may be configured to deactivate the ratchet mechanism 410 by converting the ratchet mechanism 410 to a free rotation state. The release mechanism 700 may include a force transfer mechanism 705 configured to convert the movement of the operating portions 702, 704 into movement of the locking member 412 in the release direction D5. By moving the locking member 412 in this manner, the lock between the operating member 402 and the output member 422 may be disengaged.

[0562] The force transmission mechanism 705 may include a force transmission component 710. The force transmission component 710 may be configured to receive an actuation force from the force application portion 708 of the operating component 702, 704, and may be configured to move toward the locking component 412 upon receiving the actuation force. The force transmission component 710 may include a force application surface 712 for contacting the receiving portion 419 of the locking component 412. The force application surface 712 may be formed in the shape of an outer surface of a truncated cone to allow interaction with the force receiving portion 419 when the operating component 412 is positioned at different angles. Fig. 22 As shown in FIG. 4 , the force transmission member 710 may be a sleeve extending around the pivot axis P1 of the operating member 402 . In addition, the force transmission member 710 may be slidably disposed on the output member 422 .

[0563] The force transmission component 710 may include a force surface 711, and the force application portion 708 may include a force application surface 709 in contact with the force surface 711. The operating portion 702, 704 may be configured to be rotatable about the pivot axis P1 in the rotation direction D3. The force surface 711 and the force application surface 709 may be configured so that the force transmission component 710 can be displaced in the displacement direction D4 along the pivot axis P1 by a wedging effect generated by sliding contact between the force application surface 709 and the force surface 711. Each operating portion 702, 704 may include a lever. The coupling portion 706 and the force application portion 708 may be integrally formed on the operating portion 702, 704.

[0564] exist Fig.106In an alternative construction best seen in FIG. 1 , the operating portion 702, 704 may be operatively coupled to a force application portion 708, or may include a force application portion 708 that does not produce movement of the force transfer member along the pivot axis, but rather moves about the pivot axis P1 or in a direction perpendicular to the pivot axis P1. The force application portion may be or may include a cam portion 713 that pivots about the pivot axis P1 and applies a force to the receiving portion 419 when the operating portion 702, 704 is operated. The cam portion 713 may include a rising force application surface 712 outward from the pivot axis P1 and toward the receiving portion 419. When the operating portion 702, 704 is operated and moved to a predetermined position, the receiving portion 419 is configured to or enter into sliding contact with the contact surface. Due to the rising force application surface 712, the distance of the contact position between the receiving portion 419 and the contact surface relative to the pivot axis P1 increases when the operating portion 702, 704 is operated. In other words, when the force applying surface rotates about the pivot axis P1 and moves relative to the receiving portion 419, the force applying surface Fig.21 The cam portion 713, the force applying portion 708 and / or the operating portion 703 of the operating member may be integrally formed as a single piece.

[0565] In some configurations, the coupling portion 202 may be configured to automatically move to the extended position when the movement of the coupling portion 202 relative to the anti-rebound portion 300 is released by the release mechanism 400. Fig.17 As shown in FIG. 2 , the coupling portion 202 may be biased in a direction away from the anti-rebound portion 300 by a pushing member 212 (eg, a coil spring).

[0566] The coupling portion 202 can be part of a coupling assembly 200. The coupling assembly can be configured in a manner as described herein with respect to other configurations and embodiments. The coupling assembly can include at least one connector 204, 206, such as a coupling arm, supported on the retaining structure 600 and movable between an extended position and a retracted position. The at least one connector 204, 206 and the retaining structure 600 are configured to be releasably interlockable for locking the coupling portion 202 in a plurality of different locking positions on the retaining structure 600.

[0567] For example, at least one of the connectors 204, 206 may include a locking portion 214, and the retaining structure 600 may include a receiving portion 612, such as Fig.18, for example. The locking portion 214 can be configured to releasably engage with the receiving portion 612. The locking portion 214 can be arranged so that it can only be moved translationally to establish a releasable engagement. The release mechanism 700 can be configured to release the interlock between the connectors 204, 206 and the retaining structure 600 to allow movement of the coupling portion 202 relative to the anti-rebound portion 300.

[0568] Also like Fig.17 and 18 As shown in , the coupling assembly 200 may include two connectors 204, 206, which are supported by a retaining structure 600 and each have a coupling portion 202. The connectors 204, 206 may be coupled to each other by a connecting device 208 (e.g., a rigid connecting member). In this way, the two connectors (e.g., a coupling arm) may move as a whole. The aforementioned pushing member 212 may be arranged to apply a pushing force to the connecting device 208. Therefore, the pushing member may be coupled to the connecting device 208 at one end.

[0569] As has been described above, the child restraint system 1 may include a sensor assembly 800. For example, a base 2 for a child restraint system 1 may be provided that includes a sensor assembly 800. The sensor assembly 800 may include one or more sensors that include a dedicated sensing function.

[0570] Example mount with magnetic sensor in the main support part

[0571] In some embodiments, the sensor assembly 800 may include a seat detection sensor 802. Fig.28 As shown in , the seat detection sensor 802 can be provided on the upper portion of the main body 20 of the base 2, such as the main support portion 101. The seat detection sensor 802 is configured to detect the presence of the inserted child seat 3 on the main support portion 101. The main support portion 101 can be configured as has been described above. For example, the main support portion 101 can protrude from the upper surface portion 118 of the base 2 in the first direction D1. In addition, the main support portion 101 can also be configured to be releasably engaged by the engaging portion of the inserted child seat in a forced locking manner to prevent the movement of the child seat in the first direction.

[0572] In addition, the main support portion may also be configured to support the child seat so that it can rotate about a rotation axis R1 extending parallel to the first direction D1. Figure 3 and Fig.32 It can be inferred that the seat detection sensor 802 can be arranged in the accommodation space 115 inside the main support part 101. Fig.32One configuration of the base is shown with the upper portion 107 of the main support portion 101 removed, thereby revealing the location of the seat detection sensor 802 in the main support portion 101. In the exemplary configuration, a recess is provided in the reinforcement structure 124 so that material between the sensor 802 and any sensor-detectable features provided on the child seat 3 is not obstructed by a portion of the reinforcement structure 124. The sensor 802 may be a magnetic sensor, such as a Hall sensor.

[0573] Example child seat with sensor-detectable features

[0574] As already mentioned before, the child seat 3 may comprise a sensor detectable feature, which may be detected by the seat detection sensor 802. Thus, a child seat 3 may be provided which is mountable on the base 2 and comprises at least one sensor detectable feature 46, 47. The sensor detectable feature may be a magnet and may therefore be detected by a magnet sensor.

[0575] The sensor can detect features in Figure 5 More specifically, Figure 5 The configuration is shown in which two sensor detectable features 46, 47 are provided in the lower portion of the child seat 3. Figure 5 As further illustrated in FIG. 1 , the sensor detectable features 46, 47 may be visible. For example, the sensor detectable features 46, 47 may be provided on the lower portion so that they do not protrude from the support surface 34 of the child seat 3, and in particular, the sensor detectable features 46, 47 may be mounted on an inner surface facing in a direction opposite to the support surface 34. As previously described, the sensor detectable features 46, 47 may be configured to trigger the seat detection sensor 802. In particular, the sensor detectable features are provided on the child seat 3 so that when the child seat 3 is correctly installed and / or oriented on the base, the seat detection sensor 802 detects the presence of the sensor detectable features.

[0576] exist Figure 5 In the configuration shown in , two detectable features 46, 47 are provided. Here, the two detectable features 46, 47 each comprise a magnet. The two detectable features 46, 47 are provided on the lower portion of the child seat 3 on opposite sides of the rotation center of the child seat 3. The sensor detectable features 46, 47 may be positioned on an imaginary straight line passing through the rotation center of the child seat 3, wherein the imaginary straight line may be parallel to the longitudinal direction of the child seat 3 and perpendicular to the rotation axis defined by the interface 30 of the child seat 3, particularly in the front-to-back direction.

[0577] The sensor detectable features 46 and 47 can be arranged equidistant from the rotation center of the child seat 3. In this configuration, the seat detection sensor 802 can detect two seat orientations. In other words, this configuration can be configured to detect the forward-facing orientation of the child seat 3 and the rearward-facing orientation of the child seat 3.

[0578] Example dock with rotation lock detection

[0579] Additionally or alternatively, the sensor assembly 800 may also be configured to detect the state of the locking mechanism 500. The locking mechanism 500 may be configured as described in connection with other configurations and aspects of the present disclosure. For example, the sensor assembly 800 may be configured to at least detect the presence of the aforementioned locking member 501 in the release position.

[0580] Will refer to Fig.12 , Fig.30 and Fig.31 Explain an exemplary configuration in which the sensor assembly 800 is configured to detect different states of the locking mechanism 500. The locking mechanism 500 may be configured to prevent the inserted child seat 3 from rotating about the rotation axis R1. In this configuration, the locking mechanism 500 may include a locking member 501 that is movable between a backup position I, a locking position II, and a release position III.

[0581] Fig.30 A possible configuration of the locking component 501 is shown in FIG. Fig.12 A possible arrangement of locking components 501 in a locking mechanism 500 is shown. Fig.30 A perspective view of a locking component 501 according to an example is shown. The locking component 501 may include a plate-like appearance. More specifically, the locking component 501 may include a plate-like shape with a step between the front portion and the rear portion. Therefore, the front end portion of the locking component 501 may be offset relative to the rear portion of the locking component 501.

[0582] In the front end portion of the locking member 501, two engagement portions 505, 506 are provided. The two engagement portions 505, 506 protrude in the main extension direction of the locking member 501. A recess 507 is provided between the engagement portions 505, 506. The engagement portions 505, 506 can thus be regarded as teeth protruding in the main extension direction on the front end portion of the locking member 501. The recess 507 is limited in the transverse direction by the engagement portions 505, 506, more precisely by the wall portions of the engagement portions 505, 506 facing each other.

[0583] On the lateral outer side of the engaging parts 505, 506, more precisely, on the side of the engaging parts 505, 506 opposite to the recess 507, a force-bearing surface 504 as already described above can be provided. The force-bearing surface 504 can be inclined toward the free ends of the engaging parts 505, 506. Therefore, the front end portion of the locking member 501 can be tapered on both lateral sides. The force-bearing surfaces 504 can be configured so that their imaginary extensions intersect each other in the area between the rotation axis R1 defined by the main support part 100 and the locking member 501. The force-bearing surface can be a flat surface. However, a curved force-bearing surface, such as a fillet on each engaging part 505, 506, can also be provided.

[0584] The front end portion of the locking member 501 is configured so that the engagement portions 505, 506 can engage with the restraining portion of the child seat 3. In the rear portion of the locking member 501, two guide grooves 528 are provided. The grooves 528 extend parallel to each other and in the main extension direction of the locking member 501.

[0585] A support portion 529 is provided between the grooves 528 for supporting a pushing member such as a spring. The support portion 529 is configured like a finger and is cantilevered in the middle portion of the locking member 501 and extends in a direction opposite to the direction in which the engagement portions 505 and 506 extend.

[0586] like Fig.12 As shown in , the pushing member 503 can be slidably supported on the supporting portion 529 so that one end rests on the body of the locking member 501 and the other end can be freely supported on the fixed portion of the base 2. The pushing member 503 can be configured to apply a pushing force to the locking member 501 so that the locking member is biased toward the backup position.

[0587] like Fig.30 As further shown in FIG. 5 , a magnet holder 524 is provided in the rear portion of the locking member 501. The magnet holder 524 protrudes from the upper side of the locking member 501 and holds a magnet 526. The magnet is used as a sensor detectable feature for determining the position of the locking member 501 in the locking mechanism 500. In the illustrated construction, the magnet 826 is retained on the locking member 501 so as to be movable as a whole with the locking member 501. Fig.31 As further shown in FIG. 5 , two sensors 808, 810 may be provided in the locking mechanism 500. The sensors may be arranged to align with the direction of movement of the magnet 526 on the locking member 501. The locking member 501 is provided in the locking mechanism 500 so as to be translatably movable. Therefore, when the locking member 501 is moved, the magnet 526 moves on a linear path.

[0588] The sensors 808, 810 are arranged on a straight line parallel to the straight path on which the magnet 526 travels during the movement of the locking member 501. The two sensors 808, 810 are arranged to be offset relative to each other and to maintain a certain distance relative to each other. The two sensors 808, 810 are configured to detect the magnet when the magnet moves between the backup position, the locking position and the release position together with the locking member 501. The sensor assembly 800 is configured to detect the triggering sequence of the sensors 808, 810 by the magnet 526. If a predetermined triggering sequence is detected, a forced locking signal can be output. One of the two sensors 808, 810 forms a first rotation lock sensor 808, and the other of the two sensors forms a second rotation lock sensor 810.

[0589] In the exemplary configuration, the first rotation lock sensor 808 is disposed in front of the second rotation lock sensor 810, and when the locking member 501 is in the backup position, the first rotation lock sensor 808 is disposed between the second rotation lock sensor 810 and the position of the magnet 526. Fig.31 As shown in , when the locking member 501 moves from the backup position I to the release position III, the magnet 526 passes under the first rotation lock sensor 808. In the locking position II where the engaging portions 505, 506 engage with the restraining portion of the child seat, the magnet 526 is located vertically below the first rotation lock sensor 808. In the illustrated construction, the first rotation lock sensor 808 and the second rotation lock sensor 810 are Hall sensors. In addition, the sensors 808, 810 can be configured to allow a "make-before-break" detection of the magnet 526. This means that the construction can be such that when the first rotation lock sensor 808 still detects the presence of the magnet 526, the second rotation lock sensor 810 has already sensed the presence of the magnet 526. By using such a sensor assembly, it can be reliably detected whether the locking member 501 correctly travels from the backup position I through the release position III to the locking position II. Therefore, in some configurations, the forced locking signal of the locking mechanism 500 can be output only when it is detected that the locking member 501 moves from the backup position I (which can also be regarded as the fully extended position) to the release position III (which can be regarded as the fully retracted position of the locking member 501) and then to the locked position II. In this way, the locking member 501 needs to move completely to the retracted position and then to the locked position in order to output the forced locking signal. In this way, the locking of the child seat can be detected more reliably.

[0590] In another configuration, the forced locking signal of the locking mechanism may be output without detecting the above-mentioned release position III. In this configuration, it is sufficient to detect that the locking member 501 is in the locking position II and / or that the locking member 501 moves from the backup position I to the locking position II. In this configuration, the second rotation lock sensor 810 may be omitted, but may be additionally provided for additional sensing accuracy and reliability.

[0591] Example chassis with detection of correctly inserted child seat (dual sensor detection)

[0592] The sensor assembly 800 may be configured to detect the correct support of the child seat 3 on the base 2 and to detect the correct orientation of the child seat 3 on the base 2. In addition, the sensor assembly 800 may be configured to output a confirmation signal when the correct support of the child seat 3 and the correct orientation of the child seat 3 are detected. The confirmation signal may include lighting up the light source without changing the color of the light source. The light source may be part of the display portion 1000.

[0593] In one exemplary configuration, a base 2 for a child restraint system 1 may be provided, the base 2 including a main support portion 101, a locking mechanism 500, a seat detection sensor 802, and rotation lock sensors 808, 810. In addition, the base 2 may further include a processing unit configured to receive signals from the seat detection sensor 802 and the rotation lock sensors 808, 810. The processing unit may be configured to output a signal indicating whether the child seat 3 is correctly or incorrectly installed on the base 2 based on the signals received from the seat detection sensor 802 and the rotation lock sensors 808, 810. More specifically, if the seat detection sensor 802 detects a correctly inserted seat, and the rotation lock sensors 808, 810 detect that the child seat is correctly locked to prevent rotation, the processing unit may output a signal indicating that the child seat 3 is correctly installed on the base 2.

[0594] Example mount with magnetic sensor in the bottom section for detecting the position of the load legs

[0595] In some configurations, a load leg 900 is provided for supporting the base 2 on the vehicle floor portion. The load leg 900 is pivotally mounted to the base 2 and is movable between a stowed position in which the load leg 900 is folded against the bottom portion 6 and a deployed position in which the load leg 900 is able to support the base 2 on the vehicle floor portion. Figure 34 to Figure 36 Different states of certain configurations of a load leg 900 provided on the base 2 are shown. In the illustrated configuration, the load leg 900 is pivotably coupled to the front portion 4 of the base 2 in an area where the locking mechanism 500 and the display portion 1000 are provided.

[0596] The load leg 900 may include a coupling portion 902 pivotably coupled to the body 20 of the base 2. The coupling portion 902 may also be referred to as an upper portion of the load leg. The opposite end portion of the load leg 900 (which may also be referred to as a lower portion) may include a foot 904 configured to contact a vehicle floor portion. Fig.36 It can be inferred from FIG. 1 that the length of the load leg can be adjusted. More precisely, the load leg can be retractable. Thus, the foot 904 can be arranged on the load leg so that, for example, Fig.34 and Fig.35 The retracted position shown in Fig.36 The load leg 900 may include an outer profile 906 and an inner profile 908 movably received in the outer profile 906 . Fig.34 A state is shown in which the load leg 900 is in the stowed position. Fig.35 A condition is shown in which the load legs are in the deployed position and the feet 904 are in the retracted position. Fig.36 A condition is shown in which the load legs are in the deployed position and the feet 904 are in the extended position.

[0597] The child restraint system 1 including such a load leg 900 may be configured to detect at least one of the stowed position of the load leg 900 and the deployed position of the load leg 900 by means of a sensor. In some configurations, the child restraint system 1 may include a base 2 having a magnetic sensor for detecting the position of the load leg. Therefore, at least one of the stowed position and the deployed position may be detected by sensors 812, 814 (e.g., magnetic sensors) provided on the base 2. The sensor 812 for detecting the deployed position of the load leg may also be referred to as a load leg deployed state detection sensor. The sensor 814 for detecting the stowed position of the load leg may also be referred to as a load leg stowed state detection sensor. Therefore, in some configurations, the base 2 may include a magnetic sensor 812 provided on the bottom portion 6 of the base 2, such as, for example, at Fig.33 and Fig.42 As shown in . The magnetic sensor 812 may be a proximity detection type sensor.

[0598] The load leg 900 may include a magnet 918 disposed in a position that allows detection by the magnet sensor 812 when the load leg 900 is in the stowed position. Fig.39 As shown in , the magnet 918 can be provided in the free end portion or foot 904 of the load leg 900. In this configuration, the magnet 918 is provided on the side of the load leg 900 that is oriented toward the bottom portion 6 when the load leg 900 is in the stowed position. Therefore, the magnet 918 can be detected by the magnetic sensor 812. In some configurations, the magnetic sensor 812 is covered by the magnetically attractable portion. Fig.29An exemplary configuration is shown in which the magnetic sensor 812 is covered by the cover 29. More specifically, the cover 29 covers the opening 8 in the bottom portion 6. For example, the cover 29 can include a steel plate. Thus, the cover 29 can serve as a magnetically attractable portion. The magnet 918 and the cover 29 are configured such that the magnetic attraction force therebetween is sufficient to retain the load leg 900 in the stowed position. Thus, in some configurations, the magnet 918 has a dual function in that it can serve as both a sensor detectable feature of the sensor 812 and it can serve as a component that generates a retaining force for retaining the load leg 900 in the stowed position.

[0599] In some configurations, only one of the dual functions described above may be provided. For example, a magnet 918 may be provided in the load leg, and a magnetic sensor 812 may be provided on the base. Only position detection may be provided, and the holding function by magnetic attraction may be omitted. On the other hand, in some configurations, only the magnetic attraction function as described above may be provided, and the magnetic sensor 812 may be omitted. It should be noted again that one or more magnetic sensors described herein may be Hall sensors.

[0600] Example mount with load legs with magnets in the upper leg section

[0601] In some configurations, the child safety seat system 1 can detect the deployed position of the load leg 900 by a non-contact sensing assembly. The non-contact sensing assembly can include a sensor 814, such as a magnetic sensor, such as a Hall sensor.

[0602] As from Figures 37 to 41 It can be inferred from FIG. 1 that the load leg 900 can be coupled to the body 20 of the base 2 via the pivot pin 912. Thus, the load leg 900 can be coupled to the body 20 of the base 2 via the pivot pin 912. Fig.37 The stowed position shown in Fig.38 912 and 914. The load leg 900 is configured to rotate about a pivot axis P6 defined by a pivot pin 912 between the stowed position and the deployed position shown in . The coupling portion 902 of the load leg 900 is coupled to the body 20 of the base 2 by the pivot pin 912. The load leg 900 may include a magnet 916 supported in the coupling portion 902 so as to be integrally rotatable with the load leg 900. Therefore, when the load leg 900 is rotated from the stowed position to the deployed position, the magnet 916 rotates correspondingly about the pivot pin 912. The magnet sensor 814 and the magnet 916 are arranged so that the magnet 916 passes through the magnet sensor 814 when the load leg 900 is rotated to the deployed position. The distance between the pivot pin 912 and the magnet sensor 814 is greater than the distance between the pivot pin 912 and the magnet 916. When the load leg 900 is rotated to the deployed position, the magnet 916 moves to the area between the pivot pin 912 and the magnet sensor 814. As shown in Fig.40 As shown in , the magnet 916 may be held by a magnet holder 914 in the middle portion of the coupling portion 902 of the load leg 900 . Fig.41 An enlarged view is shown that shows the position of magnet 916 relative to magnet sensor 814 , ie, where magnet 916 has passed the position where magnet sensor 814 is located on the underside of magnet sensor 814 .

[0603] Example base with sensor in connector

[0604] In some constructions, the base and / or the child restraint system 1 may include sensors 804, 806 for detecting the locking state of the connectors 204, 206 (e.g., connecting arms). Each connector may be configured to be releasably locked to a vehicle fixed structure 96 on a vehicle seat. For example, the base may include a first connector 204 including a first sensor 804 and a second connector 206 including a second sensor 806. Each sensor 804, 806 may be constructed and arranged to monitor the locking state of the connector 204, 206 with the fixed structure 96 on the vehicle seat 90. More specifically, each sensor 804, 806 is configured to output a signal reflecting the locking state or unlocking state of the corresponding connector 204, 206. Therefore, using the signals from the sensors 804, 806 allows at least four different states of the sensors 804, 806 to be determined (when they are considered in combination). Therefore, a sensor assembly 800 can be provided in which the locking state of each connector can be independently detected. For example, Fig.29 , a configuration is shown in which sensors 804, 806 are provided on the base 2. The sensors 804, 806 may be magnetic sensors. Fig.48 One possible internal configuration of connectors 204 , 206 is shown in , which includes magnet 246 as a sensor detectable feature for sensors 804 , 806 . Fig.48 Exemplary configurations in are described in other parts of this specification.

[0605] Example dock with display showing spatial information

[0606] In some configurations, the child restraint system 1 may include a display portion 1000. For example, the display portion 1000 may be disposed on the base 2. Figure 1As shown in , the display portion 1000 can be provided in the front portion 4 of the base 2. In addition, the display portion 1000 can be arranged so that the display portion is visible when the base 2 is observed from above. When the child seat is inserted on the base 2 and oriented in a forward-facing direction or in a rearward-facing direction, the display portion 1000 can be provided at a position not covered by the child seat 3. For example, as previously described, the display portion 1000 can be provided above the locking mechanism 500. The display portion 1000 can be provided in the area where the load leg 900 is pivotally connected to the main body 20 of the base 2. The display portion 1000 can be arranged substantially equidistantly from the lateral sides of the base 2. In other words, the display portion 1000 can be centrally arranged. Therefore, the user can see the display portion 1000 from both lateral sides of the base 2.

[0607] The display portion 1000 may be configured to provide concentrated information about the status of the child restraint system 1. For example, the display portion 1000 may be configured to provide information about the installation status of the child restraint system 1.

[0608] The display portion 1000 may be configured to present information in a spatial manner, allowing a user to directly spatially determine the location of the portion of the child restraint system 1 to which the displayed information relates.

[0609] Display portion 1000 may be configured to present information on a map 1002 . Fig.43 and 44 A possible configuration of a diagram 1002 is shown. Diagram 1002 may show a child restraint system 1 or a component of a child restraint system, such as a base 2 or a child seat 3. Fig.43 and Fig.44 In the exemplary configuration shown in , the map 1002 shows the entire base 2 in a plan view. A plan view depiction 1004 can be provided, which schematically shows the base 2. The display portion 1000 may include the map 1002 provided on the display portion 1000 in the form of an illustration.

[0610] The display portion 1000 may include at least one indicator 1012, 1014, 1016, 1018, 1020, 1022, 1024. The at least one indicator may be provided at a predetermined position on the map 1002. The predetermined position on the map 1002 may directly correspond to a position on the base 2.

[0611] In some configurations, the display portion 1000 may include two indicators 1014, 1016, each indicating a connection state of a connector 204, 206 or a connection arm of the base 2. These indicators may also be referred to as connection indicators. To this end, the illustration 1002 may include a schematic depiction of the connectors 204, 206 in the schematic depiction of the base 2. Within the overall display of the base 2, the indicators are correspondingly arranged near the schematic depiction of the connectors 204, 206 and / or assigned to the schematic depiction of the connectors 204, 206. Thus, the first indicator 1014 may be arranged near the depiction of the first connector 204, and the second indicator 1016 may be arranged near the depiction of the second connector 206.

[0612] The first indicator 1014 can be configured to indicate whether the first connector 204 is in a locked state or an unlocked state. For example, if the first connector 204 is in a locked state, the first indicator 1014 can be activated, such as lit, such as lit green. Similarly, the second indicator 1016 can be configured to indicate whether the second connector 206 is in a locked state or an unlocked state. For example, if the second connector 206 is in a locked state, the second indicator 1016 can be activated, such as lit. Therefore, the user can simply infer from the display portion 1000 whether the first connector 204 and the second connector 206 are locked with the fixed structure 96 of the vehicle seat 90. In addition, if one of the connectors is not in a locked state and is therefore not properly locked with the fixed structure, the user can directly see on the display which connector is not in a locked state and the position of the connector on the base 2.

[0613] It is worth noting that each of the first connector 204 and the second connector 206 can include a connection portion 202 that can be releasably locked with the fixed structure 96 of the vehicle seat 90. Therefore, the first indicator 1014 and the second indicator 1016 can be configured to indicate the respective states of the connection portions 202 provided on the first connector 204 and the second connector 206. The respective states of the connection portions 202 on the first connector 204 and the second connector 206 can be detected by the sensors 804, 806, as described in other parts of this specification.

[0614] In some configurations, the display portion 1000 may include at least one indicator 1018, 1020, 1024, each indicating a connection state of the child seat 3 on the connection interface 100 of the base 2, for example, the connection interface 100 has one or more features as described in other parts of this specification. The indicators 1018, 1020 may be assigned to the depictions of the child seats 1006, 1008 (see Fig.43), or a single indicator 1024 in the depiction of the base 2 may be assigned to the depiction of the coupling interface on the map 1002 (see Fig.44 ). The indicators 1018, 1020, 1024 are configured to illuminate when the child seat is correctly inserted into the connection interface 100, for example, when the child seat 3 is correctly inserted into the main support portion 101 as described in other parts of this specification and / or when the child seat 3 is correctly inserted into the secondary support portions 102, 103 as described in other parts of this specification. For example, if the child seat is correctly installed on the main support portion 101 and is correctly oriented in the direction of travel (for example, oriented in a forward-facing direction or a rearward-facing direction), the correct insertion of the child seat 3 on the base 2 can be indicated by the indicators 1018, 1020, 1024.

[0615] In some configurations, the display portion 1000 may include at least one indicator 1012 indicating the deployed position and / or correct installation state of the load leg 900 on the base 2. The deployed position may be a state in which the deployed position of the load leg 900 is detected, for example, by a sensor assembly, particularly a non-contact sensing assembly. For example, the sensor assembly may include the sensor 814 as described in other parts of this specification.

[0616] The display portion 1000 may further include an indicator 1022 adjacent to the depiction of the battery symbol 1010 for indicating the power status to the user.

[0617] The load leg indicator 1012 may be provided at a front end portion of the map 1002. The coupling indicators 1014, 1016 may be provided at a rear end portion of the map 1002. The seat indicators 1018, 1020, 1024 may be provided in a middle portion between the load leg indicator 1012 and the coupling indicators 1014, 1016.

[0618] In some configurations, another indicator 1058 may be assigned to indicate the depiction of the pressure exerted by the base 2 on the vehicle seat 90, such as the depiction of the pressure by which the anti-rebound portion 300 is pushed onto the seat back 92 of the vehicle seat 90. Such an indicator 1058 may also be referred to as a pressure indicator. A pressure sensor may be provided in the bottom surface of the base 2 and / or in the surface of the anti-rebound portion facing the backrest. When a sufficiently high pressure is detected by the pressure sensor, the pressure indicator may light up (e.g., green).

[0619] Example base with optional display

[0620] In some embodiments, the display portion 1050 may differ from the display portion 1000 in that the display portion 1050 displays at least one indicator row arrangement, such as a column 1054, 1056 having a plurality of indicators, and a depiction row arrangement, such as a column 1052, which displays a depiction of a specific part and configuration of the base 2. An indicator in the indicator row arrangement (such as a column 1054, 1056) may be assigned to a depiction in a parallel depiction row arrangement, such as a depiction column 1052, by being arranged at the same level as the depiction and close to the depiction. These depictions may be arranged according to the order in which the base 2 and / or the child seat 3 mounted thereon, i.e., the order in which the child restraint system 1 is installed. However, it should be noted that the system provided herein does not require the user to perform the installation steps in this order. In some embodiments, two rows of indicators 1054, 1056 are provided, correspondingly located on each lateral side of the depiction column 1052, so that two indicators are assigned to a single depiction.

[0621] The idea behind such an arrangement can at least be seen in a construction in which a completely correct installation of the base 2 and / or the child seat 3 is presented by a row / column / line of indicators, making it easy for the user to recognize whether there is a problem in a certain installation step, because the user easily recognizes if one of the indicators does not show the correct performance of the relevant installation step.

[0622] Fig.45 An exemplary configuration of the display device 1050 is shown, in which the indicators and depictions are arranged in parallel columns extending in the longitudinal direction of the base 2. In this configuration, two rows of indicators 1054, 1056 are provided, respectively located on each lateral side of the depiction column 1052, so that two indicators are assigned to each depiction in the depiction column 1052. The two indicators reflect the same information, and they light up at the same time.

[0623] Example display with beam splitter

[0624] In some embodiments, the child restraint system 1 may include a display portion 1000 configured to provide centralized information about the state of the child restraint system, and the display portion 1000 may include at least two indicators 1018, 1020 that indicate a predetermined state of the child restraint system. For example, the centralized information may include information about the installation state of the child restraint system. In some embodiments, as previously described, the child restraint system 1 may include a display portion 1050. In addition, the display portion may also include features as described herein in connection with other possible configurations of the display portion.

[0625] In some embodiments, at least two indicators 1018, 1020 of the display device 1000 or indicators of two indicator columns 1054, 1056 of the display device 1050 may be configured to be illuminated simultaneously by a single light source. In some embodiments, the display devices 1000, 1050 may include a beam splitter 1001 (see, for example, Fig.13 , showing an example of the internal structure of the display device 1000), for splitting the emission light from a single light source and directing it to, for example, the illumination parts 1018, 1020 or indicators of the display device 1000, or two illumination parts in a row of two indicator columns 1054, 1056. The beam splitter 1001 may be formed integrally.

[0626] Example Electronic Feedback System

[0627] In some configurations, an electronic feedback system may be provided. The electronic feedback system may include a microcontroller unit (MCU) 1060. The MCU 1060 may be connected to one or more sensors of the sensor assembly 800 described herein by appropriate wiring. The MCU 1060 may be configured to receive one or more signals from one or more sensors of the sensor assembly 800, and may output a signal reflecting a predetermined state during the installation of the child restraint system to the display device 1000, 1050. The purpose of the electronic feedback system may be to display the state of different inputs (e.g., inputs from one or more sensors in the sensor assembly 800) and / or the battery charge. The state may be indicated visually and / or audibly. For example, an LED may be used for visual indication. One or more LEDs may be bi-color (e.g., red and green). A buzzer or speaker may be provided for sound indication.

[0628] MCU1060 can be integrated in the display portion 1000, such as Fig.37 As shown in . MCU1060 can be set at different positions and can be properly connected to the display portion 1000. MCU1060 can also be conn...

Claims

1. A base (2) for a child restraint system (1), comprising a main support portion (101) protruding from an upper surface portion (118) of the base (2) in a first direction (D1), wherein the main support portion (101) is configured to be releasably engaged by the engaging portions (51, 52) of the inserted child seat (3) in a forced locking manner to prevent the movement of the child seat (3) in the first direction (D1), and is configured to support the child seat (3) so as to be rotatable about a rotation axis (R1) extending parallel to the first direction (D1), The lateral outer surface (104) of the main support portion (101) includes a circumferential recess (105) which is configured to receive the engagement portion (51) of the child seat (3) for establishing the positive lock, thereby allowing the child seat (3) to be connected to the main support portion (101) at a plurality of arbitrary angular orientations around the rotation axis (R1).

2. The base (2) according to claim 1, It is characterized in that The main support portion (101) is configured to carry the majority of the weight of the mounted child seat (3), and / or wherein the main support portion (101) is configured to support the child seat (3) at a predetermined distance from the upper surface portion (118), and / or The main supporting part (101) is configured as a fixed supporting part.

3. A base (2) according to any one of the preceding claims, It is characterized in that The main support portion (101) comprises an upper portion (107) supported in a suspended manner by a support portion (106) so that a suspended portion (108) of the upper portion (107) can be used to establish the positive locking, wherein the circumferential recess (105) can be bounded by a lower surface (109) of the upper portion (107) and an outer surface (114) of the support portion (106), Wherein the support portion (106) is capable of at least partially tapering towards the upper portion (107).

4. The base (2) according to any one of the preceding claims, characterized in that The upper portion (107) comprises A layer structure having an upper layer (110) and a lower layer (111) supporting the upper layer (110), The upper layer (110) is configured to be in sliding contact with a lower support surface (34) of the child seat (3) to be supported.

5. The base (2) according to claim 4, It is characterized in that The lower layer (111) comprises a higher stiffness than the upper layer (110), and / or The upper layer (110) comprises a low-friction material configured to be in sliding contact with the child seat (3), in particular a synthetic material, such as polyoxymethylene, and / or wherein the lower layer (111) comprises a metal material, and / or wherein the upper layer (110) at least partially surrounds the outer edge region of the lower layer (111), The lower side of the lower layer (111) can be exposed or uncovered, so that the engaging parts (51, 52) of the installed child seat (3) can directly contact the lower layer (111).

6. The base (2) according to any one of claims 4 and 5, It is characterized in that The upper layer (110) includes a sliding surface (112) extending around a recess (113), wherein the sliding surface (112) can comprise an annular shape, and / or The main support portion (101) can be constructed as a hollow body which is closed at the top and defines a receiving space (115) in its interior, wherein the receiving space (115) is configured to receive a portion of the tensioning mechanism (400) and / or a sensor of the sensor assembly.

7. A base (2) according to any one of the preceding claims, characterised in that The base further comprises at least one secondary support portion (102, 103) radially spaced from the main support portion (101) and configured to receive a restraining portion (32, 33) of the child seat (3) by rotating the child seat (3) about the rotation axis (R1) after the child seat (3) is inserted onto the main support portion (101), The at least one secondary support portion (102, 103) is configured to limit the tilting movement of the child seat (3) around a rotation axis (R2) extending perpendicularly to the rotation axis (R1), wherein At least one secondary supporting portion (102, 103) can include a pushing member (609), such as a spring leaf (610), which is provided to apply a pushing force on the restraining portion (32, 33) in a second direction (D2) opposite to the first direction (D1) when the restraining portion (32, 33) is received in the secondary supporting portion (102, 103).

8. The base (2) according to claim 7, It is characterized in that The insertion geometry of at least one secondary support portion (103) is mechanically coded to prevent positioning of the child seat (3) in a predetermined orientation, in particular in a forward facing orientation of the child seat (3), and / or wherein the secondary support portion (103) includes an abutment portion (120) configured to limit rotation of the child seat (3) about the rotation axis (R1) toward a forward-facing orientation, The abutment portion (120) can be configured to contact a stop portion (35) provided on the child seat (3), and can include abutment surfaces (121, 122) configured to contact the stop portion surfaces (36, 37), The abutment surfaces (121, 122) can be formed, in particular can be inclined, so that when the stop portion (35) is pushed against the abutment portion (120) when the child seat (3) is rotated, the stop portion (35) is pushed in a second direction (D2) opposite to the first direction (D1).

9. The base (2) according to claim 7, It is characterized in that at least one secondary support portion (102) is configured such that rotation of the child seat (3) about the rotation axis (R1) is automatically blocked when a rearward-facing orientation is reached when rotating the child seat about the primary support portion (101), and / or such that the child seat (3) is normally blocked from reaching the forward-facing orientation and can only be rotated to the forward-facing orientation when an actuation member (119) is actuated by a user, wherein the actuating member (119) can be a releasing member (502) of a locking mechanism (500) for locking the rotation of the child seat (3) around the rotation axis (R1), The locking mechanism (500) is configured to be operable by an operating force applied thereto by the child seat (3), wherein the operating force can be generated by converting a rotational force applied to the child seat (3) into the operating force, in particular a pushing force, The locking mechanism (500) may include a locking member (501) which is movable between a locking position in which it is capable of engaging with the restraining portion (32, 33) and a release position in which the child seat (3) is not prevented from rotating about the rotation axis (R1). wherein the locking member (501) can be biased by a pushing member (503) so that movement of the locking member (501) toward the release position may overcome the pushing force applied by the pushing member (503), and The locking component (501) may include a force-bearing surface (504) extending so that when the child seat (3) rotates around the rotation axis (R1), the operating force can be generated through sliding contact between the force-applying surfaces (42, 43) on the child seat (3) and the force-bearing surface (504).

10. The base (2) according to any one of claims 7 to 9, characterized in that: The secondary support portion (102, 103) includes a retaining structure (600) for preventing the inserted restraining portion (32, 33) from lifting from the base (2) to prevent rotational movement of the child seat (3) in the event of a crash. Wherein the holding structure (600) can include a holder (601), wherein the retainer (601, 602) can include a gripping portion (603, 604), which has, for example, a hook shape and is configured to receive the restraining portion (32, 33), and The retainer (601, 602) is forcefully coupled to a coupling portion (202), the coupling portion (202) being configured to engage a fixed structure (96) in the vehicle seat (90), wherein the coupling portion (202) can be arranged on a coupling assembly (200), for example an isofix arm, and / or can be adjustably held on the base (2) on the coupling portion (202) to allow the base (2) to be tightened on the vehicle seat, wherein the retainer (601, 602) is force-transmittingly connectable to the coupling part (202) by means of a force transmission path comprising a rigid force transmission link (605, 606, 607), for example by means of a metal force transmission link or only by means of a metal force transmission link, and / or wherein the force transmission link can comprise a coupling part support frame (606, 607), such as an isofix arm support frame, in particular a U-shaped housing, on which the coupling part (202) is supported, and a coupling member (605), such as a rod (608), for coupling the holder (601, 602) to the coupling part support frame (606, 607), Wherein the retainer (601, 602) can be coupled to the coupling portion support frame (606, 607) by only a single coupling component (605).

11. A child seat (3) that can be coupled to a base (2) according to any one of the preceding claims, the child seat (3) comprising an interface portion (30) capable of releasably engaging with the main support portion (101), the interface (30) comprising a recess (31) configured to receive the main support portion (101) in the first direction (D) and having a support surface (34) configured to contact a longitudinal end portion of the main support portion (101), and A locking mechanism (50) for releasably locking the child seat (3) on the main locking portion (101), the locking mechanism (50) comprising an engagement portion (51, 52) arranged to be movable radially into and out of the recess (31) so as to be engageable with the continuous circumferential recess (105) of the main support portion (101), and an operating member (53) for retracting the engaging portions (51, 52), The opening end portion of the recess (31) can be defined by an inclined circumferential wall portion (44), wherein the outer diameter of the recess (31) decreases from the opening toward the support surface (34).

12. The child seat (3) according to claim 11, characterized in that The operating member (53) is positioned on the child seat (3) such that the operating member (53) is accessible only when the child seat (3) is rotated to an unlocked orientation, the unlocked orientation being different from a forward-facing or rearward-facing orientation of the child seat (3), wherein the operating member (53) can be disposed on the bottom surface of the child seat (3) and is disposed at a position such that the operating member (53) is covered by the base (2) when the child seat (3) is in a forward-facing or rearward-facing orientation and is exposed only in the unlocked orientation, The operating component (53) can be arranged at the foot end of the child seat (3).

13. A child restraint system (1) comprising a base (2) according to any one of claims 1 to 10 and a child seat (3) according to any one of claims 11 and 12 which can be releasably mounted on the base (2).

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