Load limiting for rotatable seat and method for providing same

Abstract

Examples include an apparatus having a base platform, a seat platform, and a swivel joint. The base platform is configured for attachment to an occupant seat of a motor vehicle. The base platform has a first base holder component and a second base holder component. The seat platform has a seat portion and a backrest portion. The seat platform has a first seat holder complementary member and a second seat holder complementary member. A swivel joint couples the base platform and the seat platform and allows relative movement of the base platform and the seat platform about the axis of rotation and constrains movement on other axes. The first seat holder complement is aligned with the first base holder component at a first position of the base platform relative to the seat platform. The second seat holder complement is aligned with the second base holder component at a second position of the base platform relative to the seat platform (a second position different from the first position).

Description

[0001] priority

[0002] This application claims the benefit of U.S. Application Serial No. 18 / 487,721, filed on October 16, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This article generally covers, but is not limited to, child safety seats used with motor vehicles. Background Technology

[0004] Child safety seats provide improved safety for occupants in the event of a vehicle collision. To maximize safety benefits, the seat must be properly positioned and anchored to the motor vehicle. Furthermore, the occupant must be appropriately fitted into the seat and oriented in an appropriate manner based on age, weight, and other factors.

[0005] To accommodate occupants of various ages and sizes, some manufacturers offer a convertible seat that can be attached to the vehicle in either a forward-facing or rear-facing mode.

[0006] Some manufacturers offer seats configured to rotate. For example, see the following: US 10,457,168 relates to a child safety seat; US 10,322,651 relates to a child safety seat; IP 4601849 B2 relates to a child seat; US 6,746,080 relates to a child car seat; US 11,427,114 relates to a booster seat to base attachment mechanism; US 7,614,692 relates to a child car seat that rotates between a forward-facing position and a door-facing position, automatically returning to a forward-facing position; US 6,431,647 relates to a rotating child car seat; US 7,357,451 relates to a rotating car seat; US 2008 / 0054694 relates to a child restraint device having a rotating teen seat and a rotation status indicator; US 4,936,629 relates to a rotating infant car seat; and US 11,420,540 relates to a child safety seat and an associated spin-locking mechanism.

[0007] Despite these options, product cost and complexity limit the market for child safety seats with swivel mechanisms. Summary of the Invention

[0008] The inventors have recognized that, among other things, the problems to be solved may include reducing product costs and simplifying design. An example of this subject matter addresses these problems by providing a rotatable seat with a latching configuration that simplifies rotation, ensures reliable operation, and provides a secure connection between the occupant and the motor vehicle.

[0009] One example includes a base platform configured for attachment to a motor vehicle. A seat platform is coupled to the base platform via a structure including a swivel joint and multiple pairs of retainers. A pair of retainers may refer to a retainer component and a corresponding retainer complement. For example, a retainer component may include a hook, and a retainer complement may include a hook or flange of a similar shape. In a first position (e.g., occupant-facing forward), a first set of retainer pairs engages and a second set of retainer pairs disengages, and in a second position (e.g., occupant-facing rearward), the first set of retainer pairs disengages and the second set of retainer pairs engages.

[0010] One example includes a device having a base platform, a seat platform, and a swivel joint. The base platform is configured for attachment to an occupant seat of a motor vehicle. The base platform has a first base retainer component and a second base retainer component. The seat platform has a seat portion and a backrest portion. The seat platform has a first seat retainer complement and a second seat retainer complement. The swivel joint connects the base platform and the seat portion, allowing relative movement between the base platform and the seat platform about a rotation axis and constraining movement on other axes. In a first position of the base platform relative to the seat platform, the first seat retainer complement is aligned with the first base retainer component. In a second position of the base platform relative to the seat platform (the second position differs from the first position), the second seat retainer complement is aligned with the second base retainer component.

[0011] A retainer pair may include a retainer component and a corresponding retainer complement, the retainer complement being configured to allow conventional engagement or disengagement. The user can achieve conventional engagement or disengagement by manipulating the child seat without the aid of tools. According to some examples, the retainer component and the corresponding retainer complement may be similar, indistinguishable, or mirror images. For example, the retainer component may include a first hook, and the retainer complement may include a second hook configured to engage with the first hook. According to some examples, the retainer component and the corresponding retainer complement may be different. For example, the retainer component may include a bolt, and the retainer complement may include a mating channel configured to receive the head of the bolt. In various examples, one of the retainer component and the retainer complement may include a hook, wedge, bolt, flange, stud, guide rail, track, channel, or latch. In various examples, the other of the retainer component and the retainer complement may include a hook, wedge, track, track, channel, flange, stud, slot, or fastener. The retainer component can remain attached to the base platform or the seat platform, and similarly, the retainer complement can remain attached to the base platform or the seat platform.

[0012] The retainer component and the corresponding retainer complement may include a hook element. The hook element may include an overhanging or curved open section carried by a shank or bearing. In some examples, the curved open section may be described as annular, and the shank may have a flattened bar section.

[0013] Each of these non-restrictive examples can exist independently, or can be combined with one or more other examples in various permutations or combinations.

[0014] This overview is intended to provide a general understanding of the subject matter of this patent application. It is not intended to provide an exclusive or exhaustive explanation of the invention. Detailed descriptions are included to provide further information regarding this patent application. Attached Figure Description

[0015] In accompanying drawings that are not necessarily drawn to scale, similar reference numerals may describe similar parts in different views. The same numbers with different letter suffixes may represent different instances of similar parts. The accompanying drawings illustrate, by way of example and not limitation, the various embodiments discussed herein.

[0016] Figure 1A The illustration shows a schematic representation of a forward-facing child seat based on an example.

[0017] Figure 1B The illustration shows a schematic representation of a rear-facing child seat based on an example.

[0018] Figures 2A to 2C The illustrations depict retainer pairs joined according to various examples.

[0019] Figure 2D The illustration shows a partial sectional view of a forward-facing child seat based on an example.

[0020] Figure 2E The illustration shows a partial sectional view of a rear-facing child seat based on an example.

[0021] Figure 3 The illustration shows a hinged retainer component according to an example.

[0022] Figure 4 The illustration shows a view of a rotary joint based on an example.

[0023] Figure 5 The diagram illustrates a flowchart based on an example method. Detailed Implementation

[0024] Figure 1A and Figure 1BThe illustration shows a schematic representation of a side view of a child seat (or child safety seat) 10A according to an example. The seat 10A specifically includes a seat platform 40A and a base platform 30A.

[0025] exist Figure 1A In the context of motor vehicle 15, seat 10A is arranged in a forward-facing position. Motor vehicle 15 can be considered as the occupant seat of a vehicle, and in this figure, the front of the vehicle is on the left and the rear of the vehicle is on the right. Figure 1A and Figure 1B As shown, the seat platform 40A is configured to receive a seated occupant, whose hips and legs are adjacent to the seat portion 46A, and whose shoulders and back are adjacent to the backrest portion 45A.

[0026] These figures also illustrate a base platform 30A, which is configured to receive a seat platform 40A. The base platform 30A includes a lower portion 36A and an upper portion 35A. (As shown...) Figure 1A As shown, the base platform 30A is secured to the vehicle 15 by an anchoring device 20. The anchoring device 20 is attached to the vehicle 15 and to the base platform 30A by fasteners 22. In various examples, the anchoring device 20 may include a metal strip, a plastic strip, a rope, a chain, a tether, or a cable.

[0027] The base platform 30A is connected to the seat platform 40A via a rotary joint 50. The rotary joint 50 has a rotation axis 52A, which allows relative movement about the base platform 30A, about the seat platform 40A, or about both the base platform 30A and the seat platform 40A. In one example, the rotary joint 50 is rigidly attached to the base platform 30A or fixed to it. In another example, the rotary joint 50 is rigidly attached to the seat platform 40A or fixed to it, and in yet another example, the rotary joint 50 can rotate independently of both the base platform 30A and the seat platform 40A. The rotary joint 50 may include a rotary bearing assembly, which may include a common bearing bush, roller bearing, needle roller bearing, fifth wheel (pad), or other structure to enable rotation about the rotation axis 52A and to prevent or resist movement along axes other than the rotation axis 52A.

[0028] Seat 10A includes multiple retainer components, including, in the example shown, a first base retainer component 31A, a second base retainer component 32A, and a third base retainer component 33A. Furthermore, seat 10A includes a first seat retainer complement 41A, a second seat retainer complement 42A, and a third seat retainer complement 43A.

[0029] As shown, the first base holder component 31A is attached to the upper portion 35A of the base platform 30A. The second base holder component 32A is attached at a location near the joint or transition between the upper portion 35A and the lower portion 36A. The third base holder component 33A is also attached at a location near the joint between the upper portion 35A and the lower portion 36A, and closer to the lower portion 36A.

[0030] As also shown, the first seat retainer complement 41A is attached to the backrest portion 45A of the seat platform 40A. The second seat retainer complement 42A is attached to the seat portion 46A distal to the joint or transition between the backrest portion 45A and the seat portion 46A. The third seat retainer complement 43a is attached at a location near the joint or transition and closer to the seat portion 46A.

[0031] The seat platform 40A is configured for rotational movement relative to the base platform 30A about axis 52A. Figure 1A The image depicts a first position of the occupant of the child seat 10A facing forward. In this configuration, in the event of a frontal impact collision with the motor vehicle 15, a deceleration force acts on the occupant secured in the seat 10A. The occupant of the seat 10A is restrained to the seat platform 40A by straps, belts, buckles, or other retention structures. The deceleration force acting on the occupant acts on the seat platform 40A through the occupant retention structure, and thus on the base platform 30A through the connection between the seat platform 40A and the base platform 30A. The base platform 30A is substantially fixed relative to the vehicle by anchoring device 20, by other structural elements (such as vehicle seat belts or anchors), or by anchoring device 20 and other structural elements.

[0032] When seat 10A is in the first position as shown, the first base retainer component 31A and the first seat retainer complement 41A are aligned and interlocked together. Furthermore, the illustrated example provides a third base retainer component 33A and a third seat retainer complement 43A aligned and interlocked together. The rotary joint 50 prevents axial movement in the direction aligned with axis 52B and prevents movement in the shear direction relative to axis 52B. The rotary joint 50 is configured to withstand a combination of shear and tensile loads that tend to separate the base platform 30A and the seat platform 40A.

[0033] Figure 1BThe second position is depicted, in which the occupant of the child seat 10A faces rearward. In this configuration, in the event of a frontal impact collision with the motor vehicle 15, the deceleration force acting on the occupant acts on the seat platform 40A through direct contact and the occupant restraint structure, and thus on the base platform 30A and the motor vehicle 15.

[0034] When seat 10A is in the second position as shown, the second base retainer component 32A and the second seat retainer complement 42A are aligned and interlocked together. The combination of the interlocked second base retainer component 32A, the second seat retainer complement 42A, and the rotary joint 50 secures seat platform 40A relative to base platform 30A.

[0035] In summary, in the forward-facing position, the seat platform 40A and the base platform 30A are connected together by a combination of a rotary joint 50 and engaging or interlocking retainer pairs (such as the first base retainer component 31A and the first seat retainer complement 41A, or the third base retainer component 33A and the third seat retainer complement 43A).

[0036] In addition, in summary, in the rearward position, the seat platform 40a and the base platform 30a are connected together by a combination of a rotary joint 50 and interlocking retainer pairs (such as the second base retainer component 32A and the second seat retainer complement 42A).

[0037] exist Figure 1A and Figure 1B In the diagram, the retainer is schematically represented as a cantilever hook element. Figure 2A A schematic diagram of an example of a retainer pair is provided, shown here as an interlocking cantilever hook element. Figure 2A In this configuration, the second base retainer component 32B and the second seat retainer complement 42B each include a hook member, wherein the cantilever element is arranged orthogonally to the anchoring element, the anchoring element having an end connected to the base platform 30B or to the seat platform 40B. The second base retainer component 32B and the second seat retainer complement 42B are aligned in the manner shown in the engagement, their movement constrained by rotation about axis 52A. Figure 1A and Figure 1B The constraint indicates limitation or restriction, but not complete prevention. Furthermore, the figure illustrates a second base holder component 32B and a second seat holder complement 42B in an interlocking relationship. The figure depicts holder component 32B and holder complement 42B, and it should be understood that other holder pairs are aligned and interlocked in a similar manner.

[0038] Figure 2BThe illustration shows a schematic diagram of a retainer pair including interlocking wedges according to an example. In this example, retainer component 31B and retainer complement 41B have a cross-sectional profile sometimes referred to as a French cleat. As shown, retainer component 31B and retainer complement 41B have an angular relationship on complementary surfaces. In the example shown, the complementary surfaces, combined with the limited degrees of freedom of movement provided by the swivel joint 50, prevent separation of the base platform 30B and the seat platform 40B. Here, the figure depicts retainer component 31B and retainer complement 41B, and it should be understood that other retainer pairs are aligned and interlocked in a similar manner. In one example, the wedge may include a flange with contact surfaces set at a specific angle.

[0039] Figure 2C A schematic diagram of a retainer pair with interlocking components is illustrated. In this example, the third base retainer component 33B has a narrow section connected to a wide section, the size of which prevents passage through the corresponding narrow section of the complementary component (here, the third seat retainer complement 43B). In this figure, retainer component 33B may include a bolt, a tee-nut, or a section with a flange having a T-shaped section, and retainer complement 43B may include a keyhole slot, a T-slot, a guide rail, or a channel. As shown, the dimensional relationship between the structural elements of the retainer pair (here, retainer component 33B and retainer complement 43B) prevents separation of the base platform 30B and the seat platform 40B. Here, the figure depicts retainer component 33B and retainer complement 43B, and it should be understood that other retainer pairs are aligned and interlocked in a similar manner.

[0040] Figure 2D and Figure 2E The illustration shows partial cross-sectional views of a child seat arranged in the forward-facing and backward-facing directions, according to an example.

[0041] like Figure 2D and Figure 2E As shown, the seat platform 40C is configured to receive a seated occupant with their buttocks and legs adjacent to the seat portion 46B, and their shoulders and back adjacent to the backrest portion 45B.

[0042] The accompanying drawing also illustrates a base platform 30C, which is configured to receive a seat platform 40C. The base platform 30C includes a lower portion 36B and an upper portion 35B.

[0043] Seat 10B includes multiple retainer components, including, in the illustrated example, a first base retainer component 31C, a second base retainer component 32C, and a third base retainer component 33C. Furthermore, seat 10B includes a first seat retainer complement 41C, a second seat retainer complement 42C, and a third seat retainer complement 43C.

[0044] As shown, the first base holder component 31C is attached to the upper portion 35B of the base platform 30C. The second base holder component 32C is attached at a location near the joint or transition between the upper portion 35B and the lower portion 36B. The third base holder component 33C is also attached at a location near the joint between the upper portion 35B and the lower portion 36B, and closer to the lower portion 36B.

[0045] As also shown, the first seat retainer complement 41C is attached to the backrest portion 45B of the seat platform 40C. The second seat retainer complement 42C is attached to the seat portion 46B at the distal side of the joint 47 or transition between the backrest portion 45B and the seat portion 46B. The third seat retainer complement 43C is attached at a location near the joint or transition and closer to the seat portion 46B.

[0046] The seat platform 40C is configured to rotate about axis 52B relative to the base platform 30C. Figure 2D The image depicts a first position of the child seat occupant facing forward. In this configuration, in the event of a frontal impact, the deceleration force acts on the occupant secured in the seat. The occupant is restrained to the seat platform 40C by straps, belts, buckles, or other retention structures. The deceleration force on the occupant acts on the seat platform 40C through the occupant retention structure, and thus on the base platform 30C through the connection between the seat platform 40C and the base platform 30C. The base platform 30C is substantially fixed relative to the vehicle by anchoring devices, by other structural elements (such as vehicle seat belts or anchors), or by anchoring devices and other structural elements.

[0047] When the seat is in such a position Figure 2D In the first position shown, the first base retainer component 31C and the first seat retainer complement 41c are aligned and interlocked together. Additionally, the example shown specifies that the third base retainer component 33C and the third seat retainer complement 43c are aligned and interlocked together.

[0048] Figure 2EThe second position is depicted, in which the occupant of the child seat faces rearward. In this configuration, in the event of a frontal impact, the deceleration force on the occupant acts on the seat platform 40C through direct contact and the occupant restraint structure, and thus on the base platform 30C and the motor vehicle.

[0049] When the seat is in such a position Figure 2E In the second position shown, the second base holder component 32C and the second seat holder complement 42C are aligned and interlocked together. The combination of the interlocked second base holder component 32C, the second seat holder complement 42C, and axis 52B secures the seat platform 40C relative to the base platform 30C.

[0050] In summary, in the forward-facing position, the seat platform 40C and the base platform 30C are connected together by a combination of swivel joints and engaging or interlocking retainer pairs (such as the first base retainer component 31C and the first seat retainer complement 41C, or the third base retainer component 33C and the third seat retainer complement 43C).

[0051] In addition, in summary, in the rear-facing position, the seat platform 40C and the base platform 30C are connected together by a combination of a rotary joint and interlocking retainer pairs (such as the second base retainer component 32C and the second seat retainer complement 42C).

[0052] exist Figure 2D and Figure 2E In this context, the retainer is represented as a cantilever hook element.

[0053] Figure 2D The illustration shows views of retainer components 32C and 33C and retainer complement 43C according to an example, each configured as a hook element. In the example shown, retainer components 32C and 33C and retainer complement 43C each have a curved portion connected to a handle or straight section. The straight sections of retainer components 32C and 33C are connected to a joint 37 at a transition between the upper portion 35B and the lower portion 36B of the base platform 30C. The straight section of retainer complement 43C is connected to joint 47 at a transition between the backrest portion 45B and the seat portion 46B of the seat platform 40C. The curved portions of the retainer components are configured such that they selectively engage or disengage with corresponding portions of suitably aligned retainer complements by relative movement about a rotation axis 52B. In the example shown, axis 52B includes a shaft or spindle, and in one example includes a bearing.

[0054] In some examples, the retainer component and the retainer complement are attached to either or both of the base platform 30C and the seat platform 40C in a static or stationary position. The position and configuration of the retainer component are aligned with the position and configuration of the retainer complement. Rotational movement about axis 52B causes the retainer pair to enter into a conventional engagement (interlocking relationship) or to disengage from the conventional engagement.

[0055] In some examples, the retainer components or retainer complements are configured to hinge in a selectively aligned or interlocked manner. For example, the retainer component may include a hook element that can be repositioned independently of movement about the rotation axis 52B.

[0056] Figure 3 The illustration shows a retainer component in the form of an articulated hook element according to one example. In the figure, a curved portion 62 of the hook element is coupled to a handle 64. The handle 64 is pivotally attached to a mounting plate 66. An actuator 68 is coupled to the mounting plate 66 and the handle 64 via a linkage and a pivot joint. In the example shown, the actuator 68 includes a handle configured for manual positioning. In other examples, the actuator 68 includes an electric solenoid or motor. Movement of the actuator 68 in the direction indicated by arrow 60 causes the handle 64 to travel in the direction indicated by arrow 61.

[0057] In various examples, the articulated retainer component can be configured to travel about a radius to engage or disengage with a retainer complementary element. In some examples, the articulated retainer component (such as a hook element) can be configured to provide a clamping force to pull the retainer complement (such as another hook or buckle) into place, and thus lock, for example, the base platform 30C and the seat platform 40C together. The clamping force can include a tensile load applied to the retainer pair to ensure a positive engagement of the coupling.

[0058] In one example, the articulated retainer component may include a threaded fastener and a rotary actuator, such as a motor, to selectively move the hook element into or out of engagement.

[0059] Figure 4The illustration shows a view of a rotary joint 50 according to an example. In the figure, reference numeral 58 indicates a 0-degree alignment about a rotation axis 52A, which can be interpreted as indicating a first position, such as a forward-facing orientation. The rotary joint 50 includes ears 56 approaching the 0-degree alignment position and the 180-degree alignment position, and provides clearances approaching the 90-degree and 270-degree alignment positions. The rotary joint 50 is secured by fasteners 54. Fasteners 54 may include threaded components (such as nuts or bolts) or unthreaded fasteners, such as snap rings, retainer pins, or other fasteners that require tools to remove or install. Assembly and disassembly of the seat platform relative to the base platform may include axial movement of the rotary joint 50. In one example, the rotary joint 50 is attached by a user-operable fastener that allows for removal and installation without tools. Examples of tool-free fasteners may include quick-release (coarse-thread) handwheel fasteners.

[0060] In one example, when the base platform 30C and seat platform 40C are aligned as indicated in the 0-degree (forward-facing) or 180-degree (rear-facing) position, the rotary joint 50 is configured to interlock the selected retainer pair of the seat 10A in such a way that mechanical force is transferred to the vehicle 15. Furthermore, when the base platform 30C and seat platform 40C are aligned as indicated in the 90-degree or 270-degree position, the rotary joint 50 is configured such that the selected retainer component does not contact (clear of) the selected retainer complement. In this way, the base platform 30C and seat platform 40C can be separated. These alignment positions can be user-selectable to facilitate occupant loading and unloading, or to facilitate the installation of the child seat 10A into or removal from the vehicle 15.

[0061] Figure 5 The diagram illustrates a flowchart of method 500 according to an example. Method 500 relates to a method of manufacturing a child car seat as described herein.

[0062] At 510, method 500 includes providing a swivel joint coupled to a base platform. The swivel joint may be rigidly connected to the base platform, or the swivel joint may be rotatably connected to the base platform. The base platform is configured to mate with a vehicle seat. The base platform can be mounted to the vehicle seat via anchors, seat belts, or other fastening mechanisms. The base platform may have a first retainer component and a second retainer component.

[0063] At 520, method 500 includes providing a seat platform configured for engagement with a swivel joint. The seat platform includes a first seat retainer complement and a second seat retainer complement. Each retainer component of the base platform is configured to engage with at least one retainer complement of the seat platform. The swivel joint is configured to allow relative movement of the base platform and the seat platform about an axis of rotation and to constrain movement on other axes.

[0064] At 530, method 500 includes aligning a first seat retainer complement and a first base retainer component when the base platform and seat platform are in a first relative position.

[0065] At 540, method 500 includes aligning a second seat retainer complement and a second base retainer component when the base platform and seat platform are in a second relative position, which is different from the first relative position.

[0066] Various annotations

[0067] In one embodiment, to address at least one of the aforementioned problems, an apparatus is provided comprising a base platform, a seat platform, and a swivel joint. The base platform is configured for attachment to an occupant seat of a motor vehicle and has a first base retainer component and a second base retainer component. The seat platform has a seat portion and a backrest portion, as well as a first seat retainer complement and a second seat retainer complement. The swivel joint is coupled to the base platform and to the seat portion, and is configured to allow relative movement of the base platform and the seat platform about an axis of rotation and preferably constrain movement on other axes. At a first position of the base platform relative to the seat platform, the first seat retainer complement is aligned with the first base retainer component. At a second position of the base platform relative to the seat platform, different from the first position, the second seat retainer complement is aligned with the second base retainer component. Preferably, at the first position of the base platform relative to the seat platform, the second seat retainer complement is not aligned with the second base retainer component, and at the second position of the base platform relative to the seat platform, the first seat retainer complement is not aligned with the first base retainer component.

[0068] The first and second positions can be oriented in opposite directions. In particular, the first position can be a forward-facing position, and the second position can be a backward-facing position.

[0069] The axis of rotation can be substantially vertical, or it can be slightly tilted forward, for example, at an angle of up to 20°, preferably up to 10°. In some embodiments, the axis of rotation can be defined by a shaft. Rotational movement about the axis of rotation can cause the retainer to enter into a conventional engagement (interlocking relationship) or to disengage from the conventional engagement.

[0070] The seat platform may include a retention structure, such as a harness or shield for securing an occupant to the seat platform. The retention structure may include one or more of a strap, belt, and buckle.

[0071] At least one of the retainer components and retainer complements may include hooks, wedges, bolts, flanges, studs, guides, tracks, channels, latches, slots, or fasteners.

[0072] Fasteners for securing the swivel joint to the seat platform may include a fastener component located at one of the seat platform and the swivel joint, and a fastener complement located at the other of the seat platform and the swivel joint. The fastener component may include at least one rod or bar, and the fastener complement may include at least one movable hook, particularly a rotatable hook.

[0073] The retainer component or retainer complement can be configured to protrude from the seat platform in the direction toward the base platform and similarly from the base platform in the direction toward the seat platform.

[0074] A child seat, as one example, may include similar or different pairs of retainers. For example, the first pair of retainers may include a wedge configuration (such as...). Figure 2B (as shown in the diagram), and the second retainer pair may include a retainer component in the form of a hook and a retainer complement in the form of a flange.

[0075] In various examples, child seats are made from a combination of metal and plastic components. To maintain the structural rigidity and secure connection of the retainer pair, the seat platform and base platform can be made of a polymeric material such as polypropylene, which has reinforcing elements to withstand the forces encountered when attaching the child seat to the motor vehicle, the forces encountered when placing the occupant in the child seat, the forces encountered when repositioning the relative alignment of the seat platform and base platform, and the forces encountered during rapid deceleration.

[0076] In one example of this topic, in a first position (such as a forward-facing position), a first base retainer component engages with a first seat retainer complement, a second base retainer component does not engage, and a third base retainer component engages with a third seat retainer complement.

[0077] In one example of this subject matter, in a second position (such as a rear-facing position), the first base retainer component is not engaged, the second base retainer component is engaged with the second seat retainer complement, and the third base retainer component is not engaged. Preferably, the first, second, and third retainer components of this example are identical to those disclosed in the immediately preceding example.

[0078] In a first example, this subject matter includes an apparatus having a base platform having a first base retainer component and a second base retainer component. The apparatus includes a seat platform having a first seat retainer complement and a second seat retainer complement. In a first position of the seat platform relative to the base platform, a first retainer pair including the first base retainer component and the first seat retainer complement engages, and a second retainer pair including the second base retainer component and the second seat retainer complement disengages. In a second position of the seat platform relative to the base platform, the first retainer pair disengages and the second retainer pair engages.

[0079] In the second example, the device includes a third retainer pair, which includes a base platform having a third base retainer component and a seat platform having a third seat retainer complement, and when in a first position, the third base retainer component and the third seat retainer complement are aligned, in particular engaged.

[0080] In the third example, in the first position, the first seat retainer complement is interlocked with the first base retainer component, and the third seat retainer complement is interlocked with the third base retainer component, or the first seat retainer complement is interlocked with the first base retainer component and the third seat retainer complement is interlocked with both the first and third base retainer components. Additionally or alternatively, in the second position, the second seat retainer complement is interlocked with the second base retainer component.

[0081] In the fourth example, at least one of the third base retainer component and the third seat retainer complement includes a cantilever arm.

[0082] In the fifth example, at least one of the third base retainer component and the third seat retainer complement includes a flange.

[0083] In the sixth example, at least one of the third base retainer component and the third seat retainer complement is configured to be hinged.

[0084] In the seventh example, the third seat retainer complement is attached to the seat portion, particularly at the joint or transition area between the backrest portion and the seat portion.

[0085] In the eighth example, in the first position, the first seat retainer complement is interlocked with the first base retainer component.

[0086] In the ninth example, in the second position, the second seat retainer complement is interlocked with the second base retainer component.

[0087] In the tenth example, at least one of the first base retainer component, the second base retainer component, the first seat retainer complement, and the second seat retainer complement includes a cantilever arm.

[0088] In the eleventh example, at least one of the first base retainer component, the second base retainer component, the first seat retainer complement, and the second seat retainer complement includes a flange.

[0089] In the twelfth example, at least one of the first base retainer component, the second base retainer component, the first seat retainer complement, and the second seat retainer complement is configured to be hinged.

[0090] In the thirteenth example, the first position and the second position are approximately or exactly 180 degrees apart.

[0091] In the fourteenth example, the first seat retainer complement is attached to the backrest portion.

[0092] In the fifteenth example, the second seat retainer complement is attached to the seat portion, particularly at the distal part of the joint or transition between the backrest portion and the seat portion.

[0093] In the sixteenth example, the base platform includes a lower portion and an upper portion. A first base holder component may be attached to the upper portion, and a second base holder component may be attached near the joint or transition between the upper and lower portions; alternatively, the first base holder component may be attached to the upper portion, and the second base holder component may be attached to both near the joint or transition between the upper and lower portions. A third base holder component may also be attached near the joint between the upper and lower portions.

[0094] In the seventeenth example, the base platform includes an anchoring device configured to connect with a motor vehicle. The anchoring device may include at least one anchor. The anchoring device may be provided in the form of a lower anchor or an Isofix system, for example, according to ISO 13216, for releasably securing or attaching the base platform to the vehicle. The anchoring device may include fasteners such as clamps. The anchoring device may include straps, metal strips, plastic strips, ropes, chains, or cables.

[0095] In the eighteenth example, the rotary joint is connected to the lower portion. The rotary joint can be designed to prevent axial movement in the direction aligned with the axis of rotation and to prevent movement in the shear direction relative to the axis of rotation. The prevented movement can refer to the movement of the rotary joint relative to one or both of the base platform and the seat platform.

[0096] In the nineteenth example, the first base holder component is connected to the upper portion.

[0097] In the twentieth example, the second base holder component is connected at the junction near the upper and lower portions.

[0098] In the twenty-first example, the rotary joint includes a fastener that prevents tool-less separation of the base platform from the seat platform and one of the base platforms. One of the seat platform and the base platform may include an actuator that allows tool-less separation of the rotary joint from the other of the seat platform and the base platform.

[0099] In the twenty-second example, at a third position of the base platform relative to the seat platform, which is different from the first position and different from the second position, the rotary joint is configured for axial movement of the base platform relative to the seat platform.

[0100] In the twenty-third example, a method includes providing a swivel joint coupled to a base platform. The base platform is configured to mate with a vehicle seat. The base platform has a first base retainer component and a second base retainer component. The method includes providing a seat platform configured for coupling with the swivel joint. The seat platform has a first seat retainer complement and a second seat retainer complement. The swivel joint is configured to allow relative movement of the base platform and the seat platform about an axis of rotation and to constrain movement on other axes. The method includes aligning the first seat retainer complement and the first base retainer component when the base platform and the seat platform are in a first relative position. The method includes aligning a second seat retainer complement and the second base retainer component when the base platform and the seat platform are in a second relative position. The second relative position differs from the first relative position.

[0101] In the twenty-fourth example, the provided seat platform includes at least one of a first seat retainer complement and a second seat retainer complement integrally formed. Integral formation may include manufacturing the seat platform and the retainer complement using a monolithic material.

[0102] In the twenty-fifth example, the base platform includes at least one of a first base holder component and a second base holder component integrally formed.

[0103] In the twenty-sixth example, the seat platform includes a complementary element forming a third seat retainer.

[0104] In the twenty-seventh example, the base platform includes components forming a third base holder.

[0105] In the twenty-eighth example, the method includes connecting the base platform and the seat platform via a rotary joint.

[0106] In the twenty-ninth example, the connection between the base platform and the seat platform includes fasteners. Fasteners may include mounting pins, engaging threads, forming connections, welding, brazing, or other connection techniques.

[0107] In the thirtieth example, the method includes at least one of a first base holder component and a second base holder component forming a base platform.

[0108] In the thirty-first example, at least one of the first base holder component and the second base holder component forming the base platform includes an assembly hinge joint. The hinge joint may include a mechanical linkage, a threaded joint, a rotary joint, or a prismatic joint.

[0109] In the thirty-second example, the method includes at least one of a first seat retainer complement and a second seat retainer complement forming a seat platform.

[0110] In the thirty-third example, at least one of the first seat retainer complement and the second seat retainer complement forming the seat platform includes an assembly hinge joint.

[0111] In the thirty-fourth example, the base is configured to cooperate with an external attachment device such as a vehicle seat belt for releasably attaching the base platform to the vehicle, wherein the base may include guiding means for such cooperation, such as a channel or recess preferably extending in the left-right direction.

[0112] In the thirty-fifth example, the rotary joint is rigidly attached to or fixed to one of the base platform and seat platform, and is capable of rotating independently of the other. The rotary joint may include a swivel bearing assembly, which may include common bushings, roller bearings, needle roller bearings, fifth wheels (pads), or other structures to enable rotation about an axis of rotation and prevent or resist movement along axes other than the axis of rotation. The rotary joint may be secured to one or both of the seat platform and base platform by threaded components or by unthreaded fasteners. A releasable locking mechanism may be provided for selectively locking the independent rotation of the rotary joint relative to one of the seat platform and base platform. This locking mechanism includes at least a latch and an actuator for pushing the latch from a locked position to an unlocked position, and preferably also includes a spring for biasing the latch to the locked position.

[0113] The above description includes reference to the accompanying drawings, which form part of the detailed description. The drawings illustrate, by way of illustration, specific embodiments in which the invention can be practiced. These embodiments are also referred to herein as “examples.” Such examples may include elements other than those shown or described.

[0114] However, the inventors also contemplate examples in which only those elements shown or described are provided. Furthermore, the inventors contemplate examples of any combination or arrangement of those elements (or one or more aspects thereof) shown or described herein, either with respect to a particular example (or one or more aspects thereof), or with respect to other examples (or one or more aspects thereof) shown or described herein.

[0115] In the event of any inconsistency between the usage in this article and any references incorporated herein by reference, the usage in this article shall prevail.

[0116] In this document, as is common in patent literature, the terms “a” or “an” are used to include one or more, independent of any other instances or uses of “at least one” or “one or more.” In this document, unless otherwise stated, the term “or” is used to mean non-exclusive or, such that “A or B” includes “A but not B,” “B but not A,” and “A and B.” In this document, the terms “comprising” and “wherein” are used as concise English equivalents of the corresponding terms “comprising” and “wherein.” Furthermore, in the appended claims, the terms “comprising” and “including” are open-ended, meaning that a system, apparatus, article, composition, formulation, or process that includes elements other than those listed after such terms in the claims is still considered to fall within the scope of the claims. Additionally, in the following claims, the terms “first,” “second,” and “third,” etc., are used merely as labels and are not intended to impose numerical requirements on their objects.

[0117] Unless the context otherwise indicates, geometric terms such as “parallel,” “perpendicular,” “circular,” or “square” are not intended to require absolute mathematical precision. Instead, such geometric terms allow for variations due to manufacturing or equivalent functions. For example, if an element is described as “circular” or “generally circular,” parts that are not precisely circular (e.g., parts that are slightly elongated ovals or polygons) are still covered by that description.

[0118] The above description is intended to be illustrative and not restrictive. For example, the examples (or one or more aspects thereof) described above may be used in combination with each other. Other embodiments may be used, as would be employed by one of ordinary skill in the art upon reading the above description. The summary is provided to allow the reader to quickly determine the nature of the technical disclosure. This summary is submitted on the understanding that it will not be used to interpret or limit the scope or meaning of the claims. Furthermore, in the above detailed description, various features may be combined together to simplify this disclosure. This should not be construed as meaning that any unclaimed features of the disclosure are necessary for any claim. Rather, the inventive subject matter may be present in fewer than all features of a particular disclosed embodiment. Therefore, the appended claims are thus incorporated into the detailed description as examples or embodiments, each claim being an independent, separate embodiment, and it is contemplated that such embodiments may be combined with each other in various combinations or arrangements. The scope of the invention should be determined with reference to the appended claims and the full scope of the equivalents granted by those claims.

Claims

1. An apparatus, the apparatus comprising: A base platform configured for attachment to an occupant seat of a motor vehicle, the base platform having a first base retainer component and a second base retainer component; A seat platform having a seat portion and a backrest portion, and the seat platform having a first seat retainer complement and a second seat retainer complement; A rotary joint, connected to both the base platform and the seat portion, is configured to allow relative movement between the base platform and the seat platform about a rotation axis and to constrain movement on other axes; Wherein, at a first position of the base platform relative to the seat platform, the first seat retainer complement is aligned with the first base retainer component; and Wherein, at a second position of the base platform relative to the seat platform, the second position is different from the first position, and the second seat retainer complement is aligned with the second base retainer component.

2. The apparatus according to claim 1, wherein, The base platform includes a third base retainer component and the seat platform includes a third seat retainer complement, wherein when in a first position, the third base retainer component is aligned with the third seat retainer complement.

3. The apparatus according to claim 2, wherein, In the first position, the third seat retainer complement is interlocked with the third base retainer component.

4. The apparatus according to claim 2, wherein, At least one of the third base retainer component and the third seat retainer complement includes a cantilever arm or flange.

5. The apparatus according to claim 2, wherein, At least one of the third base retainer component and the third seat retainer complement is configured to be hinged.

6. The apparatus according to claim 2, wherein, The third seat retainer complement is connected to the seat portion.

7. The apparatus according to claim 1, wherein, At the first position, the first seat retainer complement is interlocked with the first base retainer component, or at the second position, the second seat retainer complement is interlocked with the second base retainer component.

8. The apparatus according to claim 1, wherein, At least one of the first base retainer component, the second base retainer component, the first seat retainer complement, and the second seat retainer complement includes a cantilever arm or a flange.

9. The apparatus according to claim 1, wherein, At least one of the first base retainer component, the second base retainer component, the first seat retainer complement, and the second seat retainer complement is configured to be hinged.

10. The apparatus according to claim 1, wherein, The first position and the second position are approximately 180 degrees apart.

11. The apparatus according to claim 1, wherein, The first seat retainer complement is connected to the backrest portion, or the second seat retainer complement is connected to the seat portion.

12. The apparatus according to claim 1, wherein, The base platform includes a lower part and an upper part.

13. The apparatus according to claim 12, wherein, The base platform includes at least one anchor, which is configured to be connected to the motor vehicle.

14. The apparatus according to claim 12, wherein, The rotary joint is connected to the lower part.

15. The apparatus according to claim 12, wherein, The first base holder component is coupled to the upper portion, or the second base holder component is coupled to the junction of the upper portion and the lower portion.

16. The apparatus according to claim 1, wherein, The rotary joint includes fasteners that prevent tool-free separation of one or both of the base platform and the seat platform.

17. The apparatus according to claim 1, wherein, At a third position relative to the seat platform, which is different from the first position and different from the second position, the rotary joint is configured for axial movement of the base platform relative to the seat platform.

18. A method, the method comprising: A swivel joint is provided to a base platform configured to mate with a vehicle seat, and the base platform has a first base retainer component and a second base retainer component; A seat platform is provided, the seat platform being configured for connection with the rotary joint, the seat platform having a first seat retainer supplement and a second seat retainer complement, the rotary joint being configured to allow relative movement between the base platform and the seat platform about a rotation axis and to constrain movement on other axes; When the base platform and the seat platform are in a first relative position, the first seat holder complement and the first base holder component are aligned. as well as When the base platform and the seat platform are in a second relative position, the second seat retainer complement and the second base retainer component are aligned, and the second relative position is different from the first relative position.

19. The method according to claim 18, wherein, Providing a seat platform includes integrally forming at least one of the first seat retainer complement and the second seat retainer complement, or wherein providing a base platform includes integrally forming at least one of the first base retainer component and the second base retainer component.

20. The method according to claim 18, wherein, The seating platform includes complementary components that form a third seat retainer.

21. The method according to claim 18, wherein, The base platform includes components that form a third base holder.

22. The method of claim 18, further comprising connecting the base platform and the seat platform via the rotary joint.

23. The method according to claim 22, wherein, The connection between the base platform and the seat platform includes fixing fasteners.

24. The method of claim 18, further comprising at least one of the first base holder component and the second base holder component forming the base platform.

25. The method according to claim 24, wherein, At least one of the first base holder component and the second base holder component forming the base platform includes an assembly hinge joint.

26. The method of claim 18, further comprising at least one of the first seat retainer complement and the second seat retainer complement forming the base platform.

27. The method according to claim 26, wherein, At least one of the first seat retainer complement and the second seat retainer complement forming the base platform includes an assembly hinge joint.

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