Base for child safety seat

Abstract

The present disclosure relates to a base for a child safety seat. In one aspect, the support leg is pivotally connected with respect to a forward facing portion of the child safety seat for swinging inward toward the seat and outward away from the seat, characterized by further comprising a releasable locking device that is activated in response to forward acceleration of the seat, a releasable locking device is provided to limit the extent of outward swing of the support leg, where the releasable locking device allows the support leg to pivot fully inward, but subsequently limit the extent of outward swing of the support leg.

Description

[0001] This application is a divisional application of the Chinese utility model patent application with the application date of April 26, 2024, the invention name of which is "Child safety seat and base and locking mechanism therefor", and the application number is 202420894627.5.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This application claims priority to European application No. 23170704.3 filed on April 28, 2023, entitled “SUPPORT LEGREBOUND LOCK”, the entire contents of which are hereby incorporated herein by reference. Technical Field

[0004] The present disclosure relates to a foot prop for a child safety seat, a child safety seat, a seat base including such a foot prop, and a child safety seat including such a foot prop or such a seat base. In a particular form, the present disclosure relates to a foot prop and its use with a seat base of a child safety seat or with a child safety seat. Background Art

[0005] Children may not be secured in the vehicle using the vehicle's seat belts until they reach a certain age or height. Therefore, child safety seats must be used to safely transport children in the vehicle. Smaller children, such as infants or toddlers, are securely held in their safety seats, which are installed on the passenger seat of a vehicle with a special child restraint system (such as an integrated harness system). For people of this age group, a safety seat with a 3-point or 5-point harness that uses a harness buckle as the connection device is the safest way to travel. The 3-point or 5-point harness of the safety seat securely secures the child's shoulders and hips to the seat.

[0006] Typically, a child safety seat is mounted on a vehicle seat. The child safety seat is either secured by using the vehicle's seat belts or by anchoring the child safety seat to the vehicle seat using a specific anchoring mechanism, such as the Isofix system.

[0007] When using anchoring mechanisms such as Isofix or LATCH (Lower Anchors and Tethers for Children), the child safety seat is attached to a corresponding anchor unit of the vehicle seat, such as a loop mount, secured to the vehicle, using a rigid link or latch. These anchoring mechanisms typically employ two anchor units. Consequently, the anchor units define the vehicle's transverse axis. Consequently, a child safety seat installed using such an anchoring mechanism (e.g., the Isofix system) tends to rotate about this transverse axis.

[0008] In the event of a frontal collision or a rear-end collision, the rotation of the child safety seat about the aforementioned transverse axis may cause serious danger to the child secured in the child safety seat and bring about a risk of injury.

[0009] However, a rear-end collision typically causes the child safety seat to initially rise from the vehicle seat and then rebound to its original position (rebound phase). The greater the force or energy of the impact, the higher the child safety seat rotates about its transverse axis and the higher it falls back. Consequently, the child is subjected to high accelerations both when rising from the vehicle seat and when returning to it. In the event of a frontal collision, the child safety seat is also forced to rotate about its transverse axis, pressing downward in the vehicle seat.

[0010] There are various mechanisms for handling unwanted rotation about a transverse axis defined by, for example, an Isofix anchor. One such mechanism is the so-called top tether. This mechanism comprises a tether and a rigid point in the vehicle body. The tether connects the rigid point to the top of the child safety seat, thereby preventing the child safety seat from moving forward relative to the vehicle seat in the event of a collision.

[0011] Another mechanism for handling rotation is the so-called "Isofix pivot link," described in European Patent EP 1 090 804. Mechanisms using an Isofix pivot link operate to control the movement of a child safety seat so that forward and rotational movement of the child safety seat is at least partially converted into (translational) downward movement of the child safety seat into the vehicle seat. Consequently, this mechanism reduces the child's overall tilt angle in a frontal collision.

[0012] A third mechanism for preventing a child safety seat from rotating about a transverse axis is provided by a support leg or, as it is also called, a footrest. A support leg or footrest for a child safety seat is a device that prevents the child safety seat from rotating about a transverse axis in the event of an impact. Typically, the support leg is attached to the front end of the seat base for the child safety seat. The seat base can be attached to a corresponding anchoring unit of the vehicle at its rear end via an Isofix link. The front end of the seat base with the attached footrest can extend away from the vehicle seat. In the event of a head-on accident, the support will support the seat base to prevent it from being pressed down into the vehicle seat.

[0013] However, in the event of a rear-end collision, the seat pivots upward, and the support legs are known to pivot inward, or fold up, toward the lower base. After the seat has rotated to its maximum height, it falls back onto the seat during a rebound phase and ultimately rests on the support legs. During this rebound phase, the support legs are completely uncontrolled and freely pivot without contacting the vehicle floor, meaning the point at which the support legs reconnect with the floor is uncontrolled and can be detrimental to the seat's child occupant.

[0014] JP2003094994A discloses a support leg for a child seat that is attached to a front portion of the child seat to prevent the child seat from moving. When not in use, the support leg can be stored against the lower surface of the child seat.

[0015] It is against this background that the present disclosure has been developed. Utility Model Content

[0016] According to a first aspect, there is provided a child safety seat for use with a vehicle seat, the child safety seat comprising: a support leg pivotally connected relative to a forward-facing portion of the child safety seat so as to swing inwardly toward the seat and outwardly away from the seat, and a locking arrangement activated by forward acceleration of the seat during an accident in which the support leg swings inwardly to impose a limit on the extent of outward swing of the support leg.

[0017] In one form, the locking means is releasable.

[0018] In one form, the locking arrangement allows the support legs to pivot inwardly during impact, but then imposes a limit on the extent to which the support legs can swing outwardly during the rebound phase.

[0019] In one form, the support leg cannot return to its initial position and eventually comes to rest at an angle defined by the locking means.

[0020] In one form, a locking mechanism secures the support leg at this outward limit.

[0021] In one form, the locking means is located adjacent a pivot point for the support leg.

[0022] In one form, the locking means comprises a detent mechanism.

[0023] In one form, the locking means comprises an engagement member for engaging with the support leg.

[0024] In one form, the engagement member is movable relative to the support leg between an engaged position and a disengaged position.

[0025] In one form, the locking device includes a housing.

[0026] In one form, the engagement member comprises a detent.

[0027] In one form, the pawl pivots about a pivot point.

[0028] In one form, the pawl includes a generally elongated body portion and a head portion projecting toward one side of the body portion.

[0029] In one form, the head portion of the pawl includes an upwardly projecting ramp.

[0030] In one form, the bevel comprises an upper side surface that slopes away from an inner side edge of the head portion.

[0031] In one form, the bevel includes an upper side surface that slopes away from an inner corner of the head portion.

[0032] In one form, in the alternative, the engagement member comprises a pin.

[0033] In one form, the pin acts linearly.

[0034] In one form, the locking means comprises a biasing member acting against the engagement member.

[0035] In one form, the biasing member biases the engagement member toward its disengaged position.

[0036] In one form, the locking means is configured so that it can never inadvertently lock the support leg during ordinary use.

[0037] In one form, the support leg is pivotally connected relative to the base of the child seat.

[0038] In one form, the base is integral with the body of the chair.

[0039] In one form, in an alternative embodiment, the body of the seat is separable from the base.

[0040] In one form, a child safety seat includes a link projecting from a child seat body, and a releasable connector disposed on the link for engaging an anchor unit associated with a vehicle seat.

[0041] According to a further aspect, there is provided a child safety seat for use with a vehicle seat, the child safety seat comprising: a support leg pivotally connected relative to a forward-facing portion of the child safety seat so as to swing inwardly towards the seat and outwardly away from the seat, and a releasable locking arrangement, wherein, in use, the releasable locking arrangement permits inward pivoting of the support leg but imposes a limit on the extent of outward swinging of the support leg.

[0042] According to a further aspect, a base for a child safety seat is provided, comprising: a support leg pivotally connected relative to a forward-facing portion of the base so as to swing inwardly toward the seat and outwardly away from the seat, and a releasable locking device activated by forward acceleration of the seat during an accident in which the support leg swings inwardly to limit the extent of the outward swing of the support leg.

[0043] According to a further aspect, a locking mechanism is provided that is configured to be fixed relative to a child safety seat, the child safety seat including a support leg that is pivotally connected relative to a forward-facing portion of the seat so as to swing inwardly toward the seat and outwardly away from the seat, wherein, during an accident in which the support leg swings inwardly, the locking mechanism is activated by forward acceleration of the seat to impose a limit on the extent of outward swing of the support leg.

[0044] In one form, the locking mechanism includes an engagement member for engaging the support leg and a biasing member for biasing the engagement member toward its disengaged position.

[0045] In one form, the locking mechanism further includes a housing relative to which both the engagement member and the biasing member are fixed.

[0046] In one form, the locking mechanism is configured to be retrofitted with respect to a child safety seat.

[0047] In one form, the locking device further includes a pawl check device configured to allow the pawl to move from its disengaged position to its engaged position but prevent the pawl from returning to its retracted position.

[0048] In one form, the pawl check device includes an obstruction member movable relative to the pawl between a non-obstructing position and an obstructing position.

[0049] In one form, the pawl includes a recess configured to receive the obstruction member and release the obstruction member when the pawl moves from its disengaged position to its engaged position.

[0050] In one form, the obstruction member comprises a nut.

[0051] In one form, in the alternative, the obstructing member comprises a ball bearing.

[0052] In one form, in the alternative, the obstructing member comprises a pin.

[0053] In one form, the obstruction member is biased into its obstructing position.

[0054] For ease of description, a child seat embodying features of the present invention is described below in its normal use position as shown in the accompanying drawings, and terms such as front, rear, upper, lower, horizontal, longitudinal, etc. may be used with reference to this normal position. However, the child seat assembly may be manufactured, shipped, sold, or used in an orientation different from that described and shown herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Embodiments of the present disclosure will be discussed with reference to the accompanying drawings, in which:

[0056] Figure 1 It is a schematic diagram of a child safety seat;

[0057] Figure 2 This is a detailed view of the support legs of the child safety seat;

[0058] Figure 3 is a detailed view of the mounting bracket (mount) for the support legs;

[0059] Figure 4 is a detailed view of the locking mechanism for the support legs;

[0060] Figure 5 is an exploded view of the locking mechanism;

[0061] Figure 6 is a plan view of the locking mechanism showing the pawl retracted;

[0062] Figure 7 is a plan view of the locking mechanism showing the pawl extended;

[0063] Figure 8 is an isometric view of the locking mechanism showing the pawl extended;

[0064] Figure 9 is an isometric view of a locking device according to another form;

[0065] Figure 10 and Figure 11 yes Figure 9 Detailed view of the locking mechanism;

[0066] Figure 12 is an isometric view of a locking device according to another form;

[0067] Figure 13 yes Figure 12 An exploded view of the locking device;

[0068] Figure 14 yes Figure 12 a plan view of the locking device; and

[0069] Figure 15 and Figure 16 is an isometric view of the locking mechanism showing the pawl extended.

[0070] In the following description, the same reference numerals designate the same or corresponding parts throughout the drawings. DETAILED DESCRIPTION

[0071] Now refer to Figure 1 and Figure 2 , a child safety seat 1 is shown for use with a vehicle seat.

[0072] The child safety seat 1 includes a seat base 10 that includes an anti-rebound bar 11. In the illustrated embodiment, a child seat body 20 is releasably secured relative to the seat base 10, but in alternative embodiments, the base may be integral with the seat body (i.e., inseparable). The seat base 10 is releasably secured to the vehicle seat via connectors (such as, but not limited to, Isofix connectors). The connectors engage corresponding anchoring elements of the vehicle seat 1.

[0073] The child seat body 20 can typically be secured in a vehicle in either a rear-facing or forward-facing configuration, depending on the size and age of the child. The child occupant is secured in the child seat body 20. The present disclosure is particularly beneficial for forward-facing occupants secured in a seat installed in a vehicle involved in a rear-end collision. It may also provide advantages for forward-facing occupants.

[0074] The support leg 40 (also known as the footrest) is pivotally connected relative to the forward-facing portion of the seat base 10 of the child safety seat 1 at a pivot point PP so as to swing inwardly toward the seat 1 (rearward in the vehicle) and outwardly away from the seat 1 (forward in the vehicle). This pivot connection allows the support leg 40 to fold toward the seat 1 into a retracted and stowed position within the underside of the base 10 for compactness and easy storage. When needed, the support leg 40 can be extended and its length locked in an installed or use position, in which the foot 42 of the support leg 40 contacts the vehicle's cabin floor.

[0075] Now refer to Figures 3 to 8 , the seat base 10 includes a support frame 12 that includes a mounting bracket 14 for a support leg 40. The support leg 40 is positioned between a pair of spaced-apart mounting portions 14a, and a pivot pin 16 passes through the support leg 40 and the mounting portions to form a pivot point PP.

[0076] Preferably, a metal frame 12 for the support leg 40 is provided at least at the front of the child safety seat 1, the metal frame 12 being conveniently formed of metal. However, other possibilities are conceivable, such as a polymer support leg 40 and a polymer support structure therefor.

[0077] The locking device 50 is located adjacent to the pivot point PP of the support leg 40 .

[0078] Reference Figure 5 The locking device 50 includes a housing 52 that is fixed relative to the support frame 12 at a position proximate the pivot point PP of the support leg 40. In the embodiment shown, the housing 52 is fixed relative to one of the mounting portions 14a of the frame 12 and includes a tab 54 that is located above the pivot pin 16.

[0079] The housing 52 houses a pawl 60 that can freely rotate about a pivot point PP that fixes the pawl 60 relative to the housing 52 .

[0080] The pawl 60 includes a generally elongated body portion 62 and a head portion 64 protruding to one side of the body portion 62. A pivot point PP and the head portion 64 are located at the distal end of the body portion 62. The head portion 64 bends in an arc shape about the pivot point PP as it extends outward.

[0081] The pawl 60 and housing 52 are both shown formed from a rigid sheet of material, but may also be molded from plastic. The pawl 60 and housing 52 both lie flat atop the upwardly facing surface of one of the mounting portions 14a, with the housing 52 uppermost, and are oriented so that the pivot point PP is positioned forwardly on the seat 1 and the head portion 64 of the pawl 60 is positioned rearwardly on the seat 1.

[0082] It is contemplated that the housing 52 can be secured to the frame without any additional fasteners, such as by clamping thereto, or by using existing features, such as the pivot pin 16, to achieve its retention via the locating tabs 54. It is contemplated that the housing 52 and pawl 60 could be made from a low-slip polymer sheet that is a flat, 2D design that must be folded to form the housing 52. These parts could also be 3D printed or molded.

[0083] The pawl 60 is pivotable between a retracted position, in which the pawl 60 is almost completely contained within the housing 52 , and an extended position, in which a head portion 64 of the pawl 60 protrudes from the housing 52 .

[0084] The sliding surface between the housing 52 and the pawl 60 may include ribs to ensure sliding without any sticking.

[0085] It is contemplated that the locking device 50 may be provided as a component that may be retrofitted to the seat 1 .

[0086] A biasing member in the form of a spring 70 extends between the attachment point 56 on the housing 52 and the attachment point 66 on the pawl 60. The spring 70 biases the pawl 60 toward its retracted position to preclude accidental deflection of the pawl 60 that would undesirably lock the support leg 40 during normal use. The attachment point 66 comprises a pin that extends through a slot 58 provided in the housing 52.

[0087] The center of mass of the pawl 60 is positioned as far away from the pivot point PP as possible so that the pawl 60 will pivot to its extended position in the event of an effective forward acceleration of +X (such as in the rebound phase of a rear impact). However, such extension of the pawl 60 is initially prevented because the side walls of the joint of the support legs 40 hinder such extension, as shown in FIG. Figure 4 and Figure 6 Once the support legs 40 are folded, as shown Figure 7 and Figure 8 As shown, this side wall of the support leg 40 moves upwards and, as soon as sufficient space is available, the pawl 60 shears into the free space.

[0088] Due to continued acceleration and inertia, pawl 60 remains extended during the rebound phase. Once support leg 40 rotates backward, the joint strikes the top of pawl 60, preventing support leg 40 from returning to its initial position. As a result, support leg 40 can no longer return to its initial position and ultimately remains at the angle defined by pawl 60. The location of pivot point PP and the external shape of pawl 60 allow pawl 60 to be sheared out of its housing 52 as quickly as possible.

[0089] The forces that may arise in a rear-end collision cause the child safety seat to rotate about the transverse axis defined by the connection point between the rigid link connector and the anchor unit. This causes the front portion of the seat base 1 to rise relative to the vehicle seat. Consequently, the position and orientation of the child safety seat differ significantly from the installed position.

[0090] Advantageously, the locking arrangement 50 allows the support legs 40 to pivot inwardly during a crash, but then prevents full outward pivoting during the rebound phase.

[0091] This ensures that the support leg 40 can be "landed" in a position that facilitates contact between the child occupant's head and the headrest.

[0092] It has been found that the angle at which the support legs 40 land again on the vehicle floor when the support legs 40 have been pivoted outwards to their maximum extent is the most unfavourable as this causes the seat 1 to drop and rotate further, causing the occupant's head to strike the headrest at a faster speed.

[0093] It has been found that the angle of the support leg 40 when it lands again on the vehicle floor is advantageous when the seat 1 stops rotating more quickly in a slightly higher position, because the occupant's head is caught earlier and therefore more gently by the headrest.

[0094] For this reason, it has been found that it is advantageous for the support leg 40 to be at or near vertical when landing on the vehicle floor again. Therefore, ideally, the locking device 50 limits the range of the outward swing of the support leg 40 to be at or near vertical.

[0095] The presence and operation of the locking device 50 may conceivably reduce instances of head and neck injuries to very young children who are restrained in seats in vehicles involved in rear-end collisions.

[0096] Furthermore, the presence and operation of the locking device 50 can conceivably reduce the size of the rebound rod required for a given seat. This can reduce the complexity and cost of manufacturing the seat.

[0097] Now refer to Figures 9 to 11 , which shows a locking device 150 according to another form. Figures 1 to 8 Those parts that are identical (or nearly identical) to corresponding parts shown in the locking device 50 will be indicated by the same reference numerals and will not be described again in detail.

[0098] The head portion 64 of the pawl 60 of the locking device 150 includes an upwardly projecting inclined surface 68. This inclined surface 68 includes an upper side surface that is inclined rearward from the inner edge E of the head portion 64. The thickness of the head portion 64 increases as it extends rearward from the inner edge E, thereby increasing the weight of the head portion 64, which facilitates the operation of the pawl 60.

[0099] When locking device 150 is compared to locking device 50, an additional difference in locking device 150 is the location of the attachment point 56 of spring 70 on housing 52. With locking device 150, the attachment point 56 of spring 70 on housing 52 is positioned toward the end of pawl 60 that is the same as the pivot point PP of pawl 60. This changes the line of action of spring 70 in order to ensure that under conditions of significant forward acceleration in +X (such as during the rebound phase of a rear impact), spring 70 does not unduly impair the operation of pawl 60.

[0100] In use, the upwardly projecting ramp 68 serves to assist in the earliest possible extension of the head portion 64 of the pawl 60 in the event of significant forward acceleration in +X, such as during the rebound phase of a rear impact, by reducing the surface pressure when it engages the support leg 40. Furthermore, the upwardly projecting ramp 68 stops rotation of the support leg more quickly than a flat pawl 60, the advantages of which are discussed above.

[0101] Now refer to Figures 12 to 16 , which shows a locking device 200 according to another form. Figures 1 to 8 Those parts that are identical (or nearly identical) to corresponding parts shown in the locking device 50 will be indicated by the same reference numerals and will not be described again in detail.

[0102] In this form, the housing 52 and the pawl 60 are molded from an engineering plastic material. The housing includes an integrally formed cover 52c that can be folded between an open position and a closed position, in which the cover 52c covers the pawl 60.

[0103] The main body portion 62 of the pawl 60 includes a recess 72 for receiving at least a portion of the spring 70. This places the spring 70 in a direct line of action with the pawl 60 and improves the packaging of the parts within the housing 52 for compactness.

[0104] Notably, the locking device 200 further includes a pawl check 210. In use, the pawl check 210 allows the pawl 60 to move from its disengaged (or retracted) position to its engaged (or extended) position, but prevents the pawl 60 from returning to its disengaged (retracted) position.

[0105] The pawl check device 210 includes an obstruction member 220 movable relative to the pawl 60 between a non-obstructing position and an obstructing position.

[0106] In the illustrated form, the obstructing member 220 comprises a nut, and the pawl 60 includes a recess 212 for receiving the nut 220 within the plane of the pawl 60. The recess 212 comprises a slot having a width that matches the dimensions of the nut 220 in the opposing plane. The blind end of the slot 212 is shaped to match the edge profile of the nut 220, so that the nut 220 nests within the blind end of the slot 212. When so nested, the obstructing member nut 220 is in its non-obstructing position. The slot 212 is angled forward to open through the outer edge of the pawl 60, so that the slot 212 forms an oblique slot for the nut 220.

[0107] In use, under conditions of effective forward acceleration of +X (such as during the rebound phase of a rear impact), when the pawl 60 moves to the engaged (extended) position, the nut 220 travels in a forward direction until it leaves the recess 212 and enters the cavity vacated by the locking pawl 60, but when the pawl 60 is stored in its disengaged (retracted) position, the nut 220 is otherwise occupied by the pawl 60. Thus, the locking pawl 60 is prevented from returning to its disengaged position because the nut 220 is wedged between the rear side of the pawl 60 and the wall of the housing 52 and obstructs the return movement of the pawl 60.

[0108] The pawl check device 200 serves as an additional level of safety to prevent the pawl 60 from failing.

[0109] In an alternative, not shown, form, the pawl check device 200 may include a spherical catch or spring-loaded pin that is biased to extend into the cavity vacated by the locking pawl 60 but is occupied by the pawl 60 when the pawl 60 is stored in its retracted position.

[0110] The reference to any prior art in this specification is not, and should not be taken as, an admission of any kind that such prior art forms part of the common general knowledge.

[0111] It will be understood that the terms “comprise” and “include” and any derivatives thereof (e.g., comprises, comprising, includes, including) as used in this specification and the claims that follow will be interpreted as including the features to which the terms refer and are not meant to exclude the existence of any additional features unless otherwise stated or implied.

[0112] In some cases, for the sake of brevity and / or to help understand the scope of the present disclosure, a single embodiment can combine multiple features. It should be understood that, in such a case, these multiple features can be provided separately (in separate embodiments) or in any other suitable combination. Alternatively, when describing separate features in separate embodiments, unless otherwise stated or implied, these separate features can be combined into a single embodiment. This also applies to claims that can be recombined in any combination. That is, the claims can be amended to include the features defined in any other claim. In addition, the phrase "at least one" mentioned in the list of items refers to any combination of those items, including single components. As an example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc and abc.

[0113] Those skilled in the art will appreciate that the present disclosure is not limited in its use to the specific application or applications described. With respect to the specific components and / or features described or depicted herein, the present disclosure is not limited to its preferred embodiments. It should be understood that the present disclosure is not limited to the disclosed embodiment or embodiments, but is capable of various rearrangements, modifications, and substitutions without departing from the scope set forth and defined by the following claims.

Claims

1. A base for a child safety seat, characterized in that: The base includes a support leg pivotally connected relative to a forward-facing portion of the base so as to swing inwardly toward the child safety seat and outwardly away from the child safety seat; and a releasable locking mechanism activated by forward acceleration of the child safety seat during an event in which the support leg swings inwardly to impose a limit on the extent to which the support leg can swing outwardly, wherein the releasable locking mechanism allows the support leg to fully pivot inwardly but then imposes a limit on the extent to which the support leg can swing outwardly.

2. The base for a child safety seat according to claim 1, characterized in that: After activation, the support leg cannot return to its initial position and eventually comes to rest at an angle defined by the locking device.

3. The base for a child safety seat according to claim 1, characterized in that: The locking device is located adjacent the pivot point of the support leg.

4. The base for a child safety seat according to claim 1, characterized in that: The locking device includes an engagement member for engaging with the support leg.

5. The base for a child safety seat according to claim 4, characterized in that: The engagement member is movable relative to the support leg between an engaged position and a disengaged position.

6. The base for a child safety seat according to claim 4, characterized in that: The engagement member includes a pawl that pivots about a pivot point.

7. The base for a child safety seat according to claim 4, characterized in that: The locking arrangement comprises a biasing member acting against the engagement member.

8. The base for a child safety seat according to claim 7, characterized in that: The biasing member biases the engagement member toward its disengaged position.

9. The base for a child safety seat according to claim 6, characterized in that: The locking device further includes a pawl check device configured to allow the pawl to move from its disengaged position to its engaged position but prevent the pawl from returning to its disengaged position.

10. The base for a child safety seat according to claim 9, characterized in that: The pawl check device includes an obstruction member movable relative to the pawl between a non-obstructing position and an obstructing position.

11. The base for a child safety seat according to claim 10, characterized in that: The pawl includes a recess configured to receive the obstruction member and release the obstruction member when the pawl moves from its disengaged position to its engaged position.

12. The base for a child safety seat according to claim 10 or 11, characterized in that: The obstruction member includes a nut.

13. The base for a child safety seat according to claim 10 or 11, characterized in that: The obstructing member comprises a ball bearing or a pin.

14. The base for a child safety seat according to claim 10, wherein: The obstruction member is biased into its obstruction position.

15. The base for a child safety seat according to claim 1, wherein: The base is selectively coupled to the child safety seat.

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