car safety seats

Abstract

The rotatable safety seat assembly comprises an upper portion having a seat and a seat rotation element having a fixed connection to the seat such that the seat is rotatable therewith about the seat rotation axis, and a lower portion configured to be attached to a passenger seat of a motor vehicle, the lower portion having a central axis spaced from the seat rotation axis. The seat assembly further comprises a translation mechanism connected to the seat rotation element and operable to translate rotation of the seat rotation element about the seat rotation axis into translation of the seat rotation element along a circular trajectory about the central axis, and vice versa. The assembly further comprises a locking mechanism operable to selectively enable a first unlocked state, in which the movement mechanism is operable to allow rotational movement of the seat with the seat rotation element about the lower central rotation axis while the locking mechanism prevents rotational movement of the seat with the seat rotation element about the seat rotation axis, and a second unlocked state, in which the seat with the seat rotation element is free to rotate about the seat rotation axis and the movement mechanism is operable to convert rotational movement of the seat with the seat rotation element about the seat rotation axis into rotational movement of the seat with the seat rotation element about the central rotation axis, and vice versa.

Description

[Technical Field]

[0001] The subject matter of this disclosure is in the field of vehicle safety and relates to vehicle safety seats, particularly seats for safely accommodating children. [Background technology]

[0002] Automobile safety seats are designed to protect children and safely support them while they are inside the vehicle. These seats are typically installed over existing car seats, either forward-facing or rear-facing.

[0003] Most safety seats are fixed. Positioning a safety seat inside a vehicle can be a tedious and heavy task. Often, the child's caregiver bends and arches their back to properly position the child in or remove the child from the safety seat located inside the vehicle.

[0004] Some safety seats are rotatable. Rotating the seat toward the rear door makes it easier to insert / pull the seat and position / remove the child. However, the child caregiver may still need to bend / arch their back to reach the seat / child. Summary of the Invention

[0005] The subject matter of the present disclosure provides a rotatable safety seat, particularly for use in a motor vehicle. The described rotatable safety seat reduces the need for a child caregiver to bend or arch their back while inserting or pulling the seat into or from the motor vehicle, or while positioning or removing a child from the seat. Additionally, the described rotatable safety seat is easy to manufacture, has special safety features, is reliable, and is not easily broken.

[0006] According to a first aspect, there is provided a rotatable automobile safety seat, comprising: an upper part comprising a seat having a forward-most point and configured to accommodate a child, and a seat rotation element having a fixed connection to the seat so as to be rotatable therewith about a seat rotation axis; a lower portion configured to be attached to a passenger seat in a motor vehicle, the lower portion having a longitudinal direction and a central axis spaced from the seat rotation axis; and a movement mechanism connected to the seat rotation element and operable to convert rotation of the seat rotation element about a seat rotation axis into movement of the seat rotation element along a circular orbit about a central axis, and vice versa, thereby ensuring that when the seat is rotated by a user, the seat, together with the seat rotation element, is moved eccentrically with respect to the central axis and simultaneously rotated about the seat rotation axis, thereby continuously changing the distance between the forward-most point of the seat and the central axis.

[0007] A rotatable automobile safety seat is configured to rotate / pivot about a central axis of the lower portion, sometimes referred to as the base, to a predetermined position on a plane defined by the passenger seat (especially parallel to the ground). Rotation of the seat about the central axis is often referred to herein as eccentric rotation. The predetermined position may be any one of a forward-facing orientation, a rearward-facing orientation, a side-facing orientation (sometimes referred to as a perpendicular orientation toward one of the rear doors), or any other angular orientation, all relative to the direction of the longitudinal axis of the lower portion and / or the driving direction, which is the same as the longitudinal direction of the automobile.

[0008] While the safety seat is rotated to a sideways orientation, the safety seat also rotates about the seat rotation axis, thereby changing the distance between the forward-most point of the seat and the central axis. In other words, the rotation about the seat rotation axis shifts the orientation of the seat, specifically the orientation of the seat occupant's center of vision, away from the central axis, pointing the seat toward the rear door of the vehicle. In other words, the safety seat moves outward laterally relative to the longitudinal axis of the lower portion, thereby moving closer to the rear door. This allows the child caregiver to easily handle the seat / child without having to excessively bend or arch their back.

[0009] The transfer mechanism may be operable to simultaneously rotate the top and seat around both the central axis and the seat rotation axis. Rotation of the seat with the seat rotation element around the central axis (eccentric rotation) is translated into simultaneous rotation of the seat with the seat rotation element around the seat rotation axis, and vice versa. Characteristics such as the angular velocity of the rotational movements around the two axes may be synchronized and have a specific relationship between them. This, first, allows for easy handling of seat rotation / displacement by the caretaker by using only one hand, leaving the other to carry the child. Second, it overcomes the need for an excessive number of parts in the transfer mechanism if the eccentric rotation and displacement of the seat from the central axis (when rotated around the seat rotation axis and changing the distance between the forward-most point of the seat and the central axis) were performed by two sub-mechanisms in two separate operations. Third, since safety standards impose weight limits on safety seats, this allows for the manufacture of a lightweight transfer mechanism. For example, some safety standards limit the total weight of a safety seat to 33 kilograms, including the weight of a 15-kilogram child. Reducing part count also directly correlates to fewer failures and malfunctions.

[0010] It should be noted that while the rotatable car safety seat is illustrated herein with respect to a child car seat, this should not limit the subject matter of the present disclosure and may be adapted in connection with any type of child support, such as a car seat, booster seat, carrycot, infant car bed, infant carrier, child safety seat, infant safety seat, child restraint system, restraining car seat, etc., and may be adapted to any required weight and size of children and paralyzed individuals. The described rotatable safety seat can be adapted for use with or without a vehicle safety belt, can be used in any type of vehicle, and can be positioned in any vehicle seat, such as any side or center front or rear seat. The rotatable safety seat can be configured to fit any acceptable standard, such as the ISOFIX standard.

[0011] In some embodiments, the seat has a default orientation (e.g., a forward-facing or rearward-facing orientation) in which a line connecting the central axis and the seat rotation axis is parallel to the longitudinal direction of the vehicle, and a maximum rotation orientation (e.g., a side orientation is a right-facing or left-facing orientation) in which the line is perpendicular to the longitudinal direction of the vehicle. In some embodiments, the distance is a maximum when the seat reaches its maximum rotation orientation.

[0012] In some embodiments, the movement mechanism is operable to convert clockwise rotation of the seat rotation element about the seat rotation axis into counterclockwise movement of the seat rotation element along a circular path about the central axis, and vice versa.

[0013] In some embodiments, at least a portion of the movement mechanism is located between the seat rotation axis and the central axis.

[0014] In some embodiments, the lower portion comprises a cavity that houses at least a portion of the movement mechanism.

[0015] In some embodiments, the cavity accommodates at least a portion of the seat rotation element.

[0016] In some embodiments, the movement mechanism is operable to allow a user to rotate the seat by manually pulling on the seat.

[0017] In some embodiments, the movement mechanism comprises at least one rotatable element.

[0018] In some embodiments, the seat rotation element and the movement mechanism form a gear assembly.

[0019] In some embodiments, the movement mechanism consists of at least two rotatable elements, including a central gear having an axis coincident with the central axis and a fixed position relative to the lower portion at least when the movement mechanism is operable, and an intermediate gear rotatably engaged with the central gear and each of the seat rotation elements.

[0020] In some embodiments, the movement mechanism comprises a peripheral ring having an axis coincident with the central axis and a fixed position relative to the lower portion at least when the movement mechanism is operable, the peripheral ring being formed with internal teeth that mesh with the exterior of the seat rotation element.

[0021] In some embodiments, the movement mechanism comprises a central wheel having an axis coincident with the central axis and a fixed position relative to the lower portion at least when the movement mechanism is operable, and a belt connecting between the seat rotation element and the central wheel, whereby the belt moves to affect rotation of the seat rotation element and the seat about the seat rotation axis by rotating the seat with the seat rotation element eccentrically about the central axis.

[0022] In some embodiments, the rotatable automobile safety seat comprises a soft lock mechanism operable to stabilize the seat at a predetermined orientation angle along a circular path while the seat is rotated.

[0023] In some embodiments, the rotatable motor vehicle safety seat comprises a locking mechanism operable to secure the seat having the seat rotation element to a lower portion, the locking mechanism configured to at least unlock the seat rotation element from the lower portion and allow rotation of the seat having the seat rotation element relative to the lower portion.

[0024] In some embodiments, the locking mechanism comprises: a first unlocked state, in which the movement mechanism is operable to allow rotational movement of the seat with the seat rotation element about a lower central rotation axis, while the locking mechanism prevents rotational movement of the seat with the seat rotation element about the seat rotation axis; a second unlocked state, in which the seat with the seat rotation element is free to rotate about the seat rotation axis, and the movement mechanism is operable to translate rotational movement of the seat with the seat rotation element about the seat rotation axis into rotational movement of the seat with the seat rotation element about the central rotation axis, and vice versa; is operable to selectively enable

[0025] In some embodiments, the locking mechanism is configured to allow rotation of the seat with the seat rotation element relative to the lower portion in one direction while preventing rotation of the seat with the seat rotation element relative to the lower portion in the opposite direction.

[0026] According to a second aspect, there is provided a rotatable automobile safety seat, comprising: an upper portion including a seat configured to accommodate a child; a lower portion configured to be attached to a passenger seat of a motor vehicle; a translation mechanism operable to permit rotation of the upper portion relative to the lower portion; A rotatable automobile safety seat is provided, comprising: a locking mechanism operable to secure an upper portion to a lower portion, the locking mechanism configured to unlock the seat from the lower portion and allow rotation of the seat relative to the lower portion in one direction while preventing rotation of the seat relative to the lower portion in an opposite direction.

[0027] The safety of the child, other passengers seated near the child, and the caregiver is of paramount importance. Rotatable safety seats are equipped with a locking mechanism that, while acting to rotate the seat in a desired direction, prevents sudden, unintended rotation in a direction not desired by the caregiver.

[0028] According to a third aspect, there is provided a rotatable automobile safety seat, comprising: an upper portion comprising a seat configured to accommodate a child and a seat rotation element fixedly connected to the seat such that the seat rotation element can rotate with the seat about a seat rotation axis; a lower portion configured to be attached to a passenger seat in a motor vehicle and having a central axis of rotation spaced from the seat axis of rotation; a movement mechanism connected to the seat rotation element and the lower portion and operable to enable rotational movement of the seat with the seat rotation element about a seat rotation axis and rotational movement of the seat with the seat rotation element about a central rotation axis; a locking mechanism configured to at least indirectly lock the movement mechanism; and a first unlocked state, in which the movement mechanism is operable to allow rotational movement of the seat with the seat rotation element about a lower central rotation axis, while the locking mechanism prevents rotational movement of the seat with the seat rotation element about the seat rotation axis; A locking mechanism is provided that is operable to selectively enable a second unlocked state in which the seat with the seat rotation element is free to rotate about a seat rotation axis and the movement mechanism is operable to convert rotational movement of the seat with the seat rotation element about the seat rotation axis into rotational movement of the seat with the seat rotation element about a central rotation axis, and vice versa.

[0029] At times, for example, a caregiver sitting beside the child may wish to care for the child during a ride. It may be advantageous to be able to rotate the seat so that the child is oriented perpendicular to the longitudinal axis of the lower portion and the caregiver, while not extending outward toward the rear door. This rotational movement only about the central axis of the lower portion may also be useful when it is raining, thus keeping the child dry during the act of exiting the vehicle.

[0030] In some embodiments, the movement mechanism comprises a rotatable unit having a unit rotation axis aligned with the central rotation axis, and the locking mechanism is operable to lock the rotatable unit to prevent its rotation relative to the lower portion in the second unlocked state and to unlock the rotatable unit from the lower portion in the first unlocked state.

[0031] In some embodiments, the locking mechanism includes right and left handle arms configured to lock the rotatable unit to the upper portion, the handle arms terminating in release buttons located on the right and left sides of the seat, respectively, such that pressing the respective release buttons releases the upper portion from the rotatable element and pulls the seat, thereby allowing rotation of the seat with the seat rotation element about both the central rotation axis and the seat rotation axis. Each of the right and left handle arms may engage at its underside with at least one tooth formed on the rotatable unit in a manner such that the upper portion is locked to the rotatable unit in the respective direction while the other handle arm is free to slide in the opposite direction relative to the rotatable unit when released.

[0032] In some embodiments, the locking mechanism includes at least one lever arm configured to lock the rotatable unit to the lower part, the lever arm terminating in a switch button located on the lower part, which, when pressed, releases the rotatable unit from the lower part and allows the upper part to rotate together with the rotatable unit about a central rotation axis of the lower part. The at least one lever arm may include a right lever arm and a left lever arm terminating in a right switch button and a left switch button, respectively, which, when pressed, allows the upper part to rotate only to its respective side about the central rotation axis. Each of the right lever arm and the left lever arm may internally engage with at least one tooth formed on the rotatable unit in a manner such that the rotatable unit is locked to the lower part in the respective direction while freely rotating in the opposite direction about the central rotation axis when the other lever arm is released.

[0033] In some embodiments, the locking mechanism comprises a ratchet assembly.

[0034] In some embodiments, at least a portion of the movement mechanism is located between the seat rotation axis and the central axis.

[0035] In some embodiments, the seat rotation element and the movement mechanism form a gear assembly.

[0036] In some embodiments, the gear assembly includes a rotatable unit, a seat rotation element, and a transition gear connected between the rotatable unit and the seat rotation element, and in the second unlocked state, rotating the upper portion clockwise about the central rotation axis causes the seat to rotate counterclockwise about the seat rotation axis.

[0037] In some embodiments, the sheet is configured to be initially oriented along the longitudinal axis of the lower portion, either in the drive direction or opposite to the drive direction.

[0038] In some embodiments, the movement mechanism is operable to rotate the seat substantially perpendicular to the longitudinal axis of the lower portion.

[0039] In some embodiments, the movement mechanism is operable to rotate the top both about the central axis and about the seat rotation axis by manually pulling the seat to either side.

[0040] In some embodiments, the movement mechanism is operable to synchronize the eccentric displacement of the seat with the changing distance between the forward-most point of the seat and the central axis (the misalignment of the center of the field of view of a person positioned on the seat).

[0041] In some embodiments, the movement mechanism comprises a round element operable to cause eccentric displacement of the sheet and misorientation of the sheet, changing the distance between the forward-most point of the sheet and the central axis.

[0042] In some embodiments, the moving mechanism includes a central gear having an axis coincident with the central axis and at least a first fixed position relative to the lower portion, and an intermediate transition gear that engages with the central gear and the seat rotation element.

[0043] In some embodiments, the movement mechanism comprises a peripheral ring having an axis coincident with the central axis and a fixed position relative to the lower portion, the peripheral ring being formed with internal teeth that mesh with the exterior of the seat rotation element.

[0044] In some embodiments, the movement mechanism includes a central wheel having an axis coincident with the central axis and at least a first fixed position relative to the lower portion, and a belt connecting between the seat rotation element and the central wheel, whereby rotating the upper portion eccentrically relative to the central axis moves the belt and affects rotation of the seat rotation element about the seat rotation axis.

[0045] In some embodiments, the rotatable automobile safety seat comprises a soft lock mechanism operable to stabilize the seat at a predetermined orientation angle while the seat is rotated about the lower longitudinal axis.

[0046] Although specifically described in connection with a child car safety seat, it is appreciated that the presented subject matter is not limited thereto and may be practiced with other rotatable / swivelable seats, such as general rotatable seats both inside and outside of automobiles. [Brief explanation of the drawings]

[0047] For a better understanding of the subject matter disclosed herein, and to illustrate how it may be carried out in practice, embodiments will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:

[0048] [Figure 1A] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1B] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1C] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1D] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1E] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1F] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1G1] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1G2] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1G3] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1G4] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1H] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1I] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1J] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1K] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1L1] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 1L2] 1 illustrates a first non-limiting example of a rotatable automobile safety seat constructed in accordance with the subject matter of the present disclosure. [Figure 2A1]1 illustrates a non-limiting example of a movement mechanism incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure and configured for eccentric rotation and misorientation of the seat by varying the distance of the forward-most point of the seat from a central axis. [Figure 2A2] 1 illustrates a non-limiting example of a movement mechanism incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure and configured for eccentric rotation and misorientation of the seat by varying the distance of the forward-most point of the seat from a central axis. [Figure 2B1] 1 illustrates a non-limiting example of a movement mechanism incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure and configured for eccentric rotation and misorientation of the seat by varying the distance of the forward-most point of the seat from a central axis. [Figure 2B2] 1 illustrates a non-limiting example of a movement mechanism incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure and configured for eccentric rotation and misorientation of the seat by varying the distance of the forward-most point of the seat from a central axis. [Figure 3A1] 1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 3A2] 1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 3A3] 1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 3A4] 1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 3A5] 1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 3A6] 1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 3A7]1 illustrates a non-limiting example of a locking system incorporated into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 4A] 1 illustrates a second non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows both eccentric and central rotation of the seat and a corresponding locking mechanism in accordance with the subject matter of the present disclosure. [Figure 4B] 1 illustrates a second non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows both eccentric and central rotation of the seat and a corresponding locking mechanism in accordance with the subject matter of the present disclosure. [Figure 4C] 1 illustrates a second non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows both eccentric and central rotation of the seat and a corresponding locking mechanism in accordance with the subject matter of the present disclosure. [Figure 4D] 1 illustrates a second non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows both eccentric and central rotation of the seat and a corresponding locking mechanism in accordance with the subject matter of the present disclosure. [Figure 4E] 1 illustrates a second non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows both eccentric and central rotation of the seat and a corresponding locking mechanism in accordance with the subject matter of the present disclosure. [Figure 4F] 1 illustrates a second non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows both eccentric and central rotation of the seat and a corresponding locking mechanism in accordance with the subject matter of the present disclosure. [Figure 5A] 1 illustrates a soft lock mechanism for incorporation into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 5B] 1 illustrates a soft lock mechanism for incorporation into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 5C] 1 illustrates a soft lock mechanism for incorporation into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 5D] 1 illustrates a soft lock mechanism for incorporation into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 5E]1 illustrates a soft lock mechanism for incorporation into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figure 5F] 1 illustrates a soft lock mechanism for incorporation into a rotatable automobile safety seat in accordance with the subject matter of the present disclosure. [Figures 6A-6B] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6C] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6D] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6E] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6F] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6G] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6H] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6I] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6J]1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6K] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6L] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6M] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. [Figure 6N] 1 illustrates yet another non-limiting example of a rotatable automobile safety seat including a movement mechanism that allows eccentric rotation and misorientation of the seat and a corresponding locking mechanism in accordance with the subject matter of this disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0049] According to a first aspect of the subject matter of the present disclosure, there is provided a rotatable automobile safety seat, comprising: an upper part comprising a seat having a forward-most point and configured to accommodate a child, and a seat rotation element having a fixed connection to the seat so as to be rotatable therewith about a seat rotation axis; a lower portion configured to be attached to a passenger seat in a motor vehicle, the lower portion having a longitudinal direction and a central axis spaced from the seat rotation axis; and a movement mechanism connected to the seat rotation element and operable to convert rotation of the seat rotation element about a seat rotation axis into movement of the seat rotation element along a circular orbit about a central axis, and vice versa, thereby ensuring that when the seat is rotated by a user, the seat, together with the seat rotation element, is moved eccentrically with respect to the central axis and simultaneously rotated about the seat rotation axis, thereby continuously changing the distance between the forward-most point of the seat and the central axis.

[0050] Reference is made to FIGS. 1A-1L2, which illustrate a first non-limiting example of a rotatable automobile safety seat 100 constructed in accordance with the subject matter of the present disclosure.

[0051] As shown, the rotatable seat 100 includes an upper portion 110, a lower portion 120, and a movement mechanism 130 operable to enable rotation of the rotatable seat.

[0052] 1A and 1B, the top 110 includes a seat 112 and a seat rotation element 114. The seat 112 has a forward-most point FMP and is configured to accommodate a child. The seat rotation element 114 is fixedly connected to the seat 112 at the bottom side of the seat, so that it rotates as one piece with the seat when the seat is rotated by a user, as described further below. The seat 112 with the seat rotation element 114 attached is typically rotatable about a seat rotation axis SA, which is the axis of symmetry of the seat rotation element 114. Thus, because they are fixedly attached to each other, whenever the seat is referred to as being rotated / rotated, the same movement applies to the seat rotation element, and vice versa.

[0053] The lower portion 120 is configured to be mounted to a vehicle passenger seat having a longitudinal direction (the direction of travel), such as a rear seat of the vehicle. As shown in FIG. 1G, the lower portion 120 has a central axis CA spaced from the seat rotation axis SA, a longitudinal axis LOA, and a lateral axis LAA. The central axis CA may be, but is not necessarily, an axis of symmetry for the lower portion 120. The longitudinal axis LOA is an axis of symmetry that passes along the length of the lower portion and typically overlaps the longitudinal direction of the vehicle. The lateral axis LAA is orthogonal to the longitudinal axis LOA, and both lie in and define a horizontal plane substantially parallel to the plane defined by the vehicle passenger seat to which the lower portion 120 is mounted.

[0054] The rotatable automobile safety seat 100 includes a movement mechanism connected to the seat rotation element 114 and operable to rotate the seat rotation element 114 and the seat 112 in a horizontal plane.

[0055] As will be appreciated, for example, in Figure 1D, seat 112 and other components described below are shown transparent to reveal seat rotation element 114 and movement mechanism 130 connected to seat rotation element 114 (both located below seat 112). Note that the movement mechanism can be configured in a variety of ways, as will be further described below with reference to Figures 2A-2B. A first non-limiting example of a movement mechanism, referred to as movement mechanism 130A, is illustrated in Figures 1A-1L.

[0056] As shown in Figures 1G1 to 1G4, typically, the rotatable automobile safety seat 100 is initially oriented forward-facing (as shown in Figure 1G1) or rearward-facing (as shown in Figure 1G2) with respect to the longitudinal direction (driving direction) of the automobile, which essentially coincides with the direction of the longitudinal axis LOA.

[0057] The movement mechanism is operable to rotate the seat (and seat rotation element 114) eccentrically about central axis CA. Thus, as seen in FIG. 1H , for example, compared to FIG. 1D , the seat rotation element 114, and the seat 112 fixedly connected thereto, are displaced by being rotated counterclockwise relative to the central axis CA, as illustrated by arrow AR1. If this is the only rotational movement that occurs, the seat will be oriented out of the paper, for example, toward the left rear door of the automobile facing the central axis CA. However, as noted above, the movement mechanism is also operable to rotate the seat rotation element 114 and the seat 112 fixedly connected thereto away from the central axis CA, for example, so that the seat 112 faces toward the right rear door of the automobile, when at least both are rotated clockwise, as illustrated by arrow AR2.

[0058] The movement mechanism is operable to rotate the seat and seat rotation element one revolution, i.e., 360°. While the seat rotation element rotates eccentrically clockwise / counterclockwise 360° about the central axis CA, the seat, in addition to its eccentric rotation, centrally rotates counterclockwise / clockwise 360° about the seat rotation axis SA. In particular, the movement mechanism is operable to rotate the seat toward the right rear door (e.g., a right-facing position as shown in FIGS. 1F and 1G3) or toward the left rear door (e.g., a left-facing position as shown in FIG. 1G4). ​​Each of the positions in FIGS. 1G3 and 1G4 can be reached by starting from either the forward-facing or rearward-facing position shown in FIGS. 1G1 and 1G2, respectively. Thus, the movement mechanism is operable to rotate the seat substantially perpendicular to the longitudinal and lower longitudinal axes of the vehicle (90 degrees toward either rear door).

[0059] Exploded views showing the major components of rotatable seat 100 are shown in Figures 1H and 1I for the seat's default forward-facing and right-side-up orientations, respectively. As shown, the rotatable seat assembly includes (from bottom to top): lower portion 120 including lower base 120B and upper base 120A, cavity 122 formed in upper base 120A configured to accommodate movement mechanism 130, movement mechanism 130 including first configuration 130A and intermediate rotation unit 136, seat rotation element 114 connected to movement mechanism 130A, rotatable cover 126, and seat 112 having a forward-most point FMP.

[0060] The upper base 120A includes a back portion 120A1 configured to abut against the back of the passenger seat. The upper base also includes a cavity 122 that houses at least a portion of the movement mechanism 130A. The upper base 120A may also include a cavity that houses the seat rotation element 114. The cavity keeps the movement mechanism and / or seat rotation element hidden and out of reach of passengers, thereby providing security for both the passenger on one side and the movement mechanism / seat rotation element on the other side. Specifically, in the example described here, the upper base 120 has a single cavity 122 that houses the seat rotation element 114 and the movement mechanism 130A. A locking disc 114D is positioned above the seat rotation element 114 and a portion of the movement mechanism 130A and maintains their spatial position relative to one another inside the cavity 122.

[0061] The intermediate rotation unit 136 is located above the seat rotation element 114 and the transfer mechanism 130A. The intermediate rotation unit 136 has a first hole 1361H through which the seat rotation element 114 passes to connect to the seat 112 on its upper side and to the transfer mechanism 130A on its lower side. A second hole 1362H in the intermediate rotation unit 136 connects to a central locus CL located on the central axis CA. Thus, the intermediate rotation unit 136, specifically the nominal distance between holes 1361H and 1362H, defines the distance between the seat rotation axis SA and the central axis CA, and consequently defines a circular orbit of the position of the seat rotation axis SA, with the position of the central axis CA being the center of the circular orbit. As shown, the intermediate rotation unit 136 includes a plurality of wheels 136W on the outer periphery that facilitate and / or stabilize rotation of the intermediate rotation unit 136 inside the cavity 122, and the wheels 136W travel along a defined path 122R along the outside of the cavity. Note that the structure of the intermediate rotation unit is not necessarily as shown, and other shapes can be used as well. In one simple example, the intermediate rotation unit has an arm / beam / rod shape with through holes that allow the intermediate rotation unit to be connected to a central locus located at a central axis and to the seat rotation element at the seat rotation axis. The intermediate rotation unit may extend to the cavity periphery and may have one or more wheels that travel along a predetermined circular path at the cavity periphery.

[0062] The cover 126 is configured to safely conceal the movement mechanism inside the cavity of the upper base. The cover also has a hole 126H that allows the seat rotation element 114 to be connected to the seat 112.

[0063] 1I, it can be seen that when the seat 112 is rotated to the right, the intermediate rotation unit 136 and the cover 126 rotate counterclockwise together with the seat rotation element 114. Also, as described above, the seat rotation axis SA moved together with the seat rotation element 114 and the seat 112 along a circular orbit.

[0064] The movement mechanism is configured to be manually operated. Specifically, the movement mechanism allows a user to rotate the seat 112 and seat rotation element 114 by manually pulling the seat toward the user. The movement mechanism is also configured for one-handed operation. The user pulls on the seat with one hand to simultaneously pull and rotate the seat, similar to the action of opening a car door. This frees the second hand so the user can carry a child, place the child in the seat, remove the child from the seat, and rotate the seat backward to the default forward-facing or rear-facing position.

[0065] The movement mechanism is connected to the seat rotation element 114 and is operable to convert rotation of the seat rotation element 114 about the seat rotation axis SA into movement of the seat rotation element 114 along a circular path about the central axis CA, and vice versa. In other words, the movement mechanism also converts movement of the seat rotation element 114 along a circular path about the central axis CA into rotation of the seat rotation element 114 about the seat rotation axis SA. The movement mechanism thereby ensures that when the seat 112 is rotated by the user, the seat 112, together with the seat rotation element 114, is moved eccentrically with respect to the central axis CA (along the circular path) and simultaneously rotated about the seat rotation axis SA, thereby continuously changing the distance between the seat's foremost point FMP and the central axis CA. This is illustrated, for example, in FIGS. 1J and 1K, which represent forward and right-side-up orientations, respectively. As shown in Figure 1(j), the distance between the foremost point FMP and the central axis CA is D1, and as shown in Figure 1K, the distance between the foremost point FMP and the central axis CA is D2, which is greater than D1. In fact, the maximum distance between the foremost point FMP and the central axis CA is when the seat is in the right or left orientation, and the minimum distance is when the seat is in the front or rear orientation.

[0066] As will be appreciated, the moving mechanism is operable to rotate the seat having the seat rotation element about a central axis CA, thereby displacing the seat having the seat rotation element eccentrically relative to the central axis CA, and to rotate the seat about a seat rotation axis SA, thereby misorienting the seat from the central axis CA, when the seat is located at any point along the circular path between the forward-facing and rearward-facing orientations. Thus, the moving mechanism is configured to synchronize the eccentric displacement relative to the central axis CA with the misorientation of the seat, i.e., to change the distance between the forward-most point of the seat and the central axis. The eccentric rotation of the seat about the central axis CA and the central rotation of the seat about the seat rotation axis SA are simultaneously operated in a synchronized manner. The eccentric rotation affects the central rotation, and vice versa. Both rotational movements are interconnected and synchronized. This feature further facilitates manually pulling and rotating the seat with one hand in a single motion.

[0067] In some embodiments, the movement mechanism includes round elements operable to cause eccentric displacement of the sheet relative to a central axis and change the distance between the sheet's forward-most point and the central axis. In particular, the movement mechanism includes only round, symmetrically rotatable elements. This configuration allows for easier manufacturing and more robust construction and performance. Thus, the eccentric displacement and misorientation of the sheet is achieved by rotational movement of the movement mechanism elements, specifically, by circular rotational movement that affects, for example, the angular and lateral displacement of the sheet's leading edge or center point. This is the case for movement mechanism 130A shown in FIGS. 1A-1L.

[0068] In FIG. 1L1, the seat is in a forward-facing position, and in FIG. 1L2, the seat has been rotated 90 degrees to the right. The movement mechanism 130A includes a gear assembly including a first central gear 132A and a second side gear 134A connected thereto. The second gear 134A is connected to the seat rotation element 114, which in this example is also configured as a gear. Essentially, all three gears lie in a plane that is substantially horizontal and parallel to the plane of the lower part. The central gear 132A has a central axis that coincides with the central axis CA and is stationary to prevent rotation, i.e., has a fixed position relative to the lower part 120. The second gear 134A functions as an intermediate gear that engages with the central gear 132A and the seat rotation element 114. As will be appreciated, when the seat rotation element 114 rotates clockwise, the second gear 134A rotates counterclockwise, and vice versa. Similarly, when the second gear 134A rotates counterclockwise, the seat rotation element rotates clockwise. Because the first central gear 132A is stationary, the second gear 134A slides over the first gear 132A in a counterclockwise direction relative to the central axis CA, thereby rotating eccentrically relative to the central axis CA in a counterclockwise direction. This causes the seat rotation element 114 to move closer to the right rear door of the vehicle until the seat rotation element passes through π / 2 radians, as illustrated in FIG. 1L2. The movement mechanism 130A allows both eccentric movement about the central axis CA and synchronous movement about the seat rotation axis SA. In one specific example, the ratio between the two rotational movements is 1:2, i.e., for each eccentric angular displacement X of the seat with the seat rotation element relative to the central axis, the seat rotates by an angle of 2X about the seat rotation axis. This can be achieved by providing a first gear with a diameter twice as large as the second gear and the seat rotation element.

[0069] 1L1-1L2 uses three gears that interact with each other to enable simultaneous eccentric and central (self-) rotational movement of the seat, but it is understood that four or more gears can be used, some of which are used intermediately between the seat rotation element and the central gear primarily to synchronize rotational movement between the different gears, so that when the seat is pulled to the right (from the starting position as viewed forward), it rotates clockwise about the seat rotation axis and counterclockwise about the central axis, and vice versa when pulled to the left. In a non-limiting example, the movement mechanism includes four gears, and the seat rotation element has internal teeth that mesh with the external teeth of a second gear that meshes with the external teeth of a third gear that meshes with the external teeth of the central gear.

[0070] As mentioned above, seats typically have a forward or rearward orientation relative to the driving direction, i.e., the default orientation is one in which the line connecting the center axis and the seat rotation axis is parallel to the longitudinal direction of the vehicle.

[0071] Additionally, the seat has a maximum rotational orientation in which the above-mentioned line is perpendicular to the longitudinal direction of the vehicle. In other words, the maximum rotational orientation is when the seat is in a right-hand or left-hand orientation. When the seat is in the maximum rotational orientation, the distance between the forward-most point FMP of the seat and the central axis CA is at a maximum.

[0072] As previously mentioned, the movement mechanism is operable to convert clockwise rotation of the seat rotation element and seat about the seat rotation axis into counterclockwise movement of the seat rotation element and seat along a circular path about a central axis, and vice versa.

[0073] Reference is now made to FIGS. 2A-2B, which illustrate different non-limiting examples of a movement mechanism for a rotatable automobile safety seat of the presently disclosed subject matter. Note that, while not necessarily specifically shown in all figures, the cover and intermediate rotation unit can be used with the rest of the movement mechanism shown. FIGS. 2A1-2A2 illustrate a second non-limiting example of a movement mechanism 130B configured in accordance with the subject matter described herein. As can be seen, the bottom side of the top portion includes the seat 112 and the seat rotation element 114 fixedly connected to the seat 112 for rotation therewith about the seat rotation axis SA. Also shown are the cover 126 and the intermediate rotation unit 136, which are positioned between the seat 112 and the seat rotation element 114. Similar to the central gear 132A in the moving mechanism 130A, the moving mechanism 130B includes a central wheel / gear 132B positioned inside a cavity in the lower portion 120 and having a central axis aligned with the central axis CA, and is stationary so as not to rotate during eccentric rotation of the seat 112 and seat rotation element 114 about the central axis CA, i.e., has a fixed position relative to the lower portion 120.

[0074] The center wheel 132B and the seat rotation element 114 are connected by a timing belt 134B, as specifically shown in Figure 2B2. All three elements (seat rotation element, center wheel, and timing belt) lie in a plane that is substantially horizontal and parallel to the plane of the bottom.

[0075] As can be appreciated, rotating the seat 112 with the seat rotation element 114 eccentrically about the central axis CA moves the timing belt 134B, affecting the rotation of the seat rotation element 114 and the seat 112 about the seat rotation axis SA, and vice versa. In other words, the timing belt 134B functions in an opposite manner, beginning to move and causing eccentric rotation of the seat about the central axis CA when rotating the seat with the seat rotation element about the seat rotation axis SA. Thereby, when the seat is rotated by the user, the seat, together with the seat rotation element, is moved eccentrically about the central axis CA and simultaneously rotated about the seat rotation axis, thereby ensuring that the distance between the forward-most point FMP of the seat and the central axis CA continuously changes exactly as described above.

[0076] As mentioned above, in some embodiments, the diameter ratio between the seat rotation element 114 and the center wheel 132B is 1:2 to synchronize the eccentric movement about the center axis with the self-centering movement about the seat rotation axis.

[0077] 2B1-2B2 illustrate a third non-limiting example of a movement mechanism 130C constructed in accordance with the subject matter described herein. As can be seen, a peripheral ring 132C having a central axis coincident with central axis CA and a fixed position relative to lower portion 120 has internal teeth 1322C that mesh with external teeth 1142C of seat rotation element 114. When the seat, together with seat rotation element 114, is eccentrically rotated about central axis CA with the assistance of intermediate rotation unit 136, seat rotation element 114 and seat 112 also begin to rotate about the seat rotation axis due to the meshing between the internal and external teeth on peripheral ring 132C and seat rotation element 114, respectively. Thus, the seat with the seat rotation element is eccentrically rotated about the central axis CA and centrally rotated about the seat rotation axis SA, so that when the seat is rotated by the user, the seat together with the seat rotation element is moved eccentrically relative to the central axis and simultaneously rotated about the seat rotation axis, thereby ensuring that the distance between the seat's forward-most point FMP and the central axis CA changes continuously exactly as described above. In some embodiments, the diameter ratio between the seat rotation element 114 and the peripheral ring 132C is 1:2 to synchronize the eccentric movement about the central axis and the self-centering movement about the seat rotation axis.

[0078] In some embodiments, the rotatable motor vehicle safety seat includes a locking mechanism operable to lock the seat to the underbody, the locking mechanism configured to selectively unlock the seat from the underbody to allow the seat (together with the seat rotation element) to rotate relative to the underbody.

[0079] Reference is made to Figures 3A1-3A7, which illustrate a non-limiting example of a locking mechanism 140A constructed in accordance with the subject matter described herein.

[0080] Locking mechanism 140A allows seat 114 to be easily released from lower part 120 using only one hand, freeing the second hand for other activities, such as carrying a child. In the illustrated example, unlocking the seat is easily operated by release buttons 1422A and 1424A located on the right and left sides of seat 114. Each release button is pressed to release the seat from the lower part, allowing it to be pulled and rotated to one side. Thus, pressing right button 1422A allows the seat to be pulled and rotated to the right, and pressing left button 1424A allows the seat to be pulled and rotated to the left. In one particular example, similar to locking mechanism 140A, the locking mechanism is configured to allow the seat to be pulled and rotated in one direction relative to the lower part, while preventing rotation of the seat in the opposite direction relative to the lower part. This makes the seat safer to operate.

[0081] As shown, the release buttons are connected to a right handle arm 1442A and a left handle arm 1444A that are operable to lock and unlock the seat 112 to and from the lower part 120. The handle arms pass through corresponding holes 1122A and 1124A in the seat 112, thus trapping the seat 112 within a portion of the lower part 120.

[0082] Each of the handle arms terminates on its underside with a tooth 1462A configured to engage at least one corresponding recess 1262A, 1264A (two right and two left recesses are shown in FIG. 3A4) located in or communicating with the lower part 120 to prevent the seat from moving relative to the lower part. In this example, the recesses are formed in a protrusion 136P on the intermediate rotation unit 136 as seen in FIG. 3A3, but they may also be formed in another portion. When the release button is pressed inward as shown by arrow AR4, a torsion spring 1482A moves the tooth outward, unlocking the seat from the lower part as shown by arrow AR3.

[0083] 3A3-3A7 illustrate unlocking the seat for rotation to the right. The lower portion 120 includes a cover 126 that conceals the movement mechanism and is positioned below the seat 112. The cover 126 has an opening 126H that allows connection between the seat rotation element 114 (located below the cover 126 at the same level as the movement mechanism) and the seat 112, which is positioned above the cover 126. The cover 126 and intermediate rotation unit rotate together with the seat rotation element 114 about a central axis CA. This is illustrated by arrow AR5 in FIG. 3A6, and it can be understood that the cover and intermediate rotation unit (including recesses 1262A and 1264A) rotate counterclockwise when the seat is rotated clockwise to the right. Additionally, the left recess 1264A does not stop the rotation of the cover, intermediate rotation unit, and seat, even if the left release button is not pressed.

[0084] As seen in FIG. 3A5 , when the right release button is pressed, tooth 1462A is released / disengaged from recess 1262A, allowing the seat to be rotated to the right. As can be seen, left recess 1264A is constructed and oriented to allow the seat to be rotated to the right and cover 126 to be rotated counterclockwise without the need to actively release tooth 1464A by pressing the left release button. Thus, locking mechanism 140A locks the seat downward in one direction while allowing the seat to rotate in the opposite direction. Only when the two handle arms are locked together can the seat be rotated to the first side; when only the handle arm on the first side is released, rotation to the second side is prevented. In other words, locking mechanism 140A may include a ratchet assembly that allows rotation to one side while preventing rotation to the other side. If the user releases the seat by pressing the right release button, the seat can be rotated to the right, and after a short distance to the right, if the user pushes the seat back to the left, the seat is locked by the engagement of the left tooth 1464A with the left recess 1264A.

[0085] 3A7 illustrates the seat 112 when fully rotated to the right. It will be understood that as the seat rotation element rotates counterclockwise about its central axis, the cover and intermediate rotation unit simultaneously rotate to the left.

[0086] It should be noted that while activation and deactivation of the locking mechanism 140A is performed and operated by mechanical means in the illustrated example, it may be operated in other forms, such as electronically.

[0087] The rotatable automobile safety seat of the presently disclosed subject matter may include a movement mechanism that enables the above-described eccentric movement of the seat relative to the central axis of the lower portion, along with deviations therefrom (changing the distance of the seat's forward-most point from the central axis), and also enables additional relative movement between the upper portion (seat and seat rotation element) and the lower portion (lower base and upper base). The movement mechanism thereby includes multiple operating schemes. In a first operating scheme, the movement mechanism is operable to rotate the seat both about the central rotation axis of the lower portion and about the seat rotation axis, as described above. In a second scheme, the movement mechanism is operable to rotate the upper portion (including the seat and seat rotation element) and the additional elements (the cover and intermediate rotation unit) only about the central axis. The rotatable automobile safety seat is provided with a locking mechanism that can selectively unlock different elements / components of the lower and upper portions to enable the above-described movement schemes.

[0088] 4A-4F, which illustrate non-limiting examples of a rotatable automobile safety seat 100A. The automobile safety seat 100A can be selectively rotated eccentrically and offset from a lower central axis in one movement scheme, as depicted, for example, in FIGS. 1A-2B, or selectively rotated about a lower central axis without changing the distance of the seat's forward-most point from the central axis CA in a second movement scheme.

[0089] The rotatable automobile safety seat 100A includes a movement mechanism and a locking mechanism operable to selectively enable the two movement / rotation schemes described above. As seen in FIG. 4B, the illustrated non-limiting movement mechanism 1302 may be configured at least in part similar to movement mechanism 130A, but with additional features as described herein below. However, although not specifically illustrated, it will be understood that movement mechanisms 130B and 130C may also be adjusted / modified to add additional features and movement schemes. Accordingly, it will also be understood that the above-described movement mechanisms 130A-130C may be modified to include additional features.

[0090] As shown in FIG. 4B, the seat 112 is rotated to the right without deviating from the central axis CA, and the seat 112 is still positioned above and oriented in the direction of the central axis CA, thereby maintaining the distance D3 between the foremost point FMP and the central axis, as shown in FIGS. 4E-4F. In the illustrated example, the central gear 132A is not fixed to the lower part 120 but can rotate relative to the lower part 120 about the central axis CA. Therefore, the central gear 132A is referred to herein as a rotatable unit. The upper part 110, including the seat and seat rotation element 114, the cover, and the intermediate rotation unit (both not visible in FIG. 4B) all have a fixed relationship with the central gear (rotatable unit) 132A and can rotate therewith.

[0091] The locking mechanism is configured to selectively unlock the rotatable unit from the upper and lower bases of the lower part while keeping it locked to the seat, seat rotation element, cover, and intermediate rotation unit (collectively referred to hereinafter as the upper part) and allow it to pivot about its own axis coincident with the central axis, thereby resulting in the seat rotating while the upper part rotates therewith and maintains its orientation toward the central axis and maintaining the distance between its forward-most point and the central axis. Alternatively, the locking mechanism selectively unlocks the rotatable unit from the upper part while keeping it locked to the base of the lower part, thereby preventing the rotatable unit from rotating about its own axis while allowing the upper part to rotate eccentrically about the central axis, and the seat and seat rotation element to pivot about the seat rotation axis as described above.

[0092] In the illustrated example, the locking mechanism 1402 includes two locking sub-mechanisms: The first sub-mechanism is the locking mechanism 140A configured as described above, which is operable to lock and unlock the top portions from the rotatable units, i.e., the central gear 132A, to respectively fix them as described above or allow their rotation both about the central axis CA and about the seat rotation axis SA.

[0093] The second sub-mechanism is a locking mechanism 140B configured to lock and unlock the rotatable unit (central gear 132A) from the bottom and respectively disable or enable its central rotation together with the top about the central axis CA.

[0094] 4B-4D, locking mechanism 140B includes two lever arms, right lever arm 1442B and left lever arm 1444B, configured to lock rotatable unit 132A to lower portion 120. The lever arms terminate in switch buttons 1422B and 1424B located on the right and left lower portions, respectively, and the lever arms include teeth (1462B and 1464B) on the inside that are configured to engage with the rotatable units.

[0095] In the illustrated example, the mode of operation of locking mechanism 140B is similar to that of locking mechanism 140A. Pressing the respective switch buttons releases the rotatable unit from the lower portion on each side, allowing the upper portion to rotate together with the rotatable unit about the central axis CA of the lower portion on each side. Each of the right and left lever arms engages therein at least one recess formed in the rotatable unit, such as recess 1262B engaged by tooth 1462B of right lever arm 1442B, in such a manner that the rotatable unit is locked to the lower portion in the respective direction while freely rotating in the opposite direction about the central axis when the other lever arm is released. In other words, locking mechanism 140B also includes a ratchet mechanism.

[0096] As can be seen in FIG. 4D, when the right lever arm 1442B engages with the recess 1262B, it does not lock the rotatable unit in the left direction (counterclockwise), but only in the right direction (clockwise). Although not specifically shown, the reverse is also true. When the left lever arm 1444B engages with its respective recess, it does not lock the rotatable unit in the right direction (counterclockwise), but only in the left direction (clockwise). Therefore, in order to rotate the top together with the cover and rotatable unit, one of the two lever arms must be released in each direction.

[0097] In some embodiments, the rotatable automobile safety seat of the presently disclosed subject matter includes a soft-lock mechanism operable to stabilize the seat at a predetermined orientation angle defining an intermediate position between a forward-facing position and a rearward-facing position while the seat is rotated about the lower longitudinal axis. In some embodiments, the intermediate position also includes a forward-facing position and a rearward-facing position. This is useful for managing the safety seat without having to frequently unlock the seat when it is in an intermediate position, such as when rotated perpendicularly toward the right or left rear door of the automobile. The soft-lock mechanism stabilizes (temporarily locks) the seat in the intermediate position and allows the safety seat to be unlocked from the intermediate position by gently pushing or pulling the seat in a desired direction (clockwise or counterclockwise) without requiring further action, such as pressing a button.

[0098] Reference is made to Figures 5A-5F, which illustrate a non-limiting example of a soft locking mechanism 150 in accordance with the subject matter disclosed herein.

[0099] The soft lock mechanism 150 is configured to rotate with the seat and lock the seat at a predetermined angle during rotation. For example, the soft lock may be achieved at an angle of 0, 90, 180, 270 (or -90) degrees relative to the original orientation (either a forward-facing or rearward-facing orientation along the longitudinal driving direction of the vehicle). The soft lock mechanism therefore has a fixed spatial relationship to the rotatable seat. In the illustrated example, the soft lock mechanism 150 is mounted to the side of the intermediate rotating unit 136, which rotates with the seat, as described above.

[0100] The soft-lock mechanism uses a reversible mechanism that allows for automatic locking and unlocking without the need to press a button to unlock. In the illustrated example, the soft-lock mechanism 150 includes a spring 152 that is in a compressed state when the soft-lock mechanism reaches a locking point, as described further below, and relaxes somewhat but remains compressed.

[0101] The soft lock mechanism terminates in a wheel 154 that allows the seat to be unlocked from the soft lock point by applying a pushing or pulling force to the seat along the rotational path.

[0102] As shown, the locking point 158 ​​is configured as a hole / recess in the lower cavity into which the wheel 154 fits during seat rotation as a result of the outward release of the compressed spring.

[0103] 5D-5F illustrate bottom views of the seat's three soft-lock positions. FIG. 5D shows the seat in a rearward-facing position, with the soft-lock mechanism locking the seat at lock point 158A. FIG. 5E shows the seat in a lateral right-hand position, with the soft-lock mechanism locking the seat at lock point 158B. FIG. 5F shows the seat in a lateral left-hand position, with the soft-lock mechanism locking the seat at lock point 158C. Note that, again, cover 126 and intermediate rotation unit 136 rotate in the opposite direction to the seat, so that, for example, when the seat is rotated counterclockwise from the rearward-facing position (FIG. 5D) to the right-hand position (FIG. 5E), cover 126 and intermediate rotation unit 136 rotate clockwise, unlocking from lock point 158A and locking at lock point 158B.

[0104] Although the accompanying drawings illustrate the soft lock mechanism with eccentric rotation of the seat about a central axis causing the forward-most point of the seat to change distance from the central axis and the seat to move away from the central axis (to the left and right), it will be understood that the soft lock mechanism may be equally applied to central rotation of the seat (as depicted in Figures 4A-4D).

[0105] Reference is now made to Figures 6A-6N, which illustrate another embodiment of a rotatable automobile safety seat utilizing the principles of the subject matter described herein. Specifically, the embodiment described herein below relates to a safety seat incorporating a movement mechanism (sometimes referred to hereinafter as a "rotation assembly") similar to the movement mechanism described in Figures 1A-2A2. Additionally, a locking mechanism is described having substantially similar functionality to the locking mechanism described in Figures 3A1-3A7.

[0106] 6A-6N illustrate simplified exemplary diagrams of a rotatable vehicle safety seat 300. As shown, the safety seat 300 includes a chair portion 102 configured to seat a child. The chair portion 102 may be mounted on, and in some embodiments, fixed to, a base portion 104. The base portion 104 may be fixed to an existing vehicle seat. The safety seat 300 may include a rotation assembly 310 (FIG. 6A) configured to simultaneously eccentrically rotate the chair portion 102 about a central locus 314 (FIG. 6C) that defines a central axis of the base portion 104, thereby varying the distance between the forward-most point of the seat FMP and the central axis (thereby displacing the seat from the central locus 314).

[0107] The base portion 104 may be constructed with a rotating assembly 310 and may be adaptable to fit multiple types of safety seats, such as safety seats that increase in size as a child grows.

[0108] Chair portion 102 is mounted on base portion 104. In some embodiments, base portion 104 may include a bottom base 320 covered by an opening cover 326 and a base cover 124. Bottom base 320, opening cover 326, and base cover 124 may be connected to chair portion 102 by chair support 128.

[0109] In some embodiments, the opening cover 326 and / or the base cover 324, as well as any other elements of the safety seat 300, may be formed in mating engagement with other elements to minimize recession and prevent a child's body parts from becoming trapped therein. For example, the opening cover 326 may be formed in an interference fit engagement with the bottom base 320.

[0110] While the rotating assembly 310 is shown housed within the bottom base 320, in some embodiments, the rotating assembly 310 may be located in any other suitable location. As seen in FIGS. 6A-6B, the rotating assembly 310 may include a central axis 330 aligned with the central locus 314. An intermediate rotating unit in the form of a rotating arm 134 is mounted on the central axis 330 via a connecting protrusion 135 (FIG. 6C) and extends to a rim 336 of a central opening 138 formed in the bottom base 320. The chair section 104 is eccentrically rotated by the rotating arm 134 via an eccentric shaft 340 mounted in a bearing 144. The bearing 144 may protrude from the rotating arm 134 and be positioned eccentrically from the central locus 314. In some embodiments, a support wheel 146 (FIG. 6C) may be provided to support the rotating arm 134.

[0111] In the embodiment shown, the rotating arm 134 can rotate one full rotation within the rim 336 by means of a central wheel 350 supported by the central axle 330. The rotating arm 134 is further mounted on a peripheral wheel 354 (which is fixedly connected to the chair portion 102 and rotates therewith about the chair rotation axis) that forms the seat rotation element, which can be confined to the central wheel 350 by a timing belt 358. As can be appreciated, this is similar to the movement mechanism 130B described above.

[0112] In some embodiments, the diameter ratio between the peripheral wheels 354 and the central wheel 350 may be approximately 1:2 to synchronize the rotation of the arms 134. Any suitable diameter ratio may be selected, and in some embodiments, three or more wheels may be used.

[0113] The chair portion 102 may be attached to, and generally fixed to, the chair support 128 via an eccentric shaft 340 inserted therein. Thus, the chair portion 102 and chair support 128 (and peripheral wheel 354) rotate in unison about bearing 144, which is rotated by the rotating arm 134.

[0114] It will be appreciated that the chair portion 102 forms an upper portion together with the peripheral wheels 354, the chair portion 102 having a forward-most point FMP and configured to accommodate a child, the peripheral wheels 354 having a fixed connection to the chair portion 102 so as to be rotatable therewith about the seat rotation axis SA of the chair. The lower portion formed by the base portion 104 has a central axis CA spaced from the seat rotation axis SA. A movement mechanism formed by the rotation assembly 310 is connected to the peripheral wheels 354 forming the seat rotation element, the movement mechanism being operable to translate rotation of the seat rotation element about the seat rotation axis into movement of the seat rotation element along a circular path about the central axis, and vice versa. This ensures that when the chair portion is rotated by a user, the chair portion together with the peripheral wheels is moved eccentrically relative to the central axis and simultaneously rotated about the seat rotation axis, thereby continuously changing the distance between the forward-most point of the chair portion and the central axis.

[0115] In some embodiments, the safety seat 300 may include an optional locking assembly 160 including a ratchet subassembly 166 connected to the chair portion 102 via an opening cover 326 and a base cover 324, as further described below.

[0116] 6E-6N are simplified exemplary diagrams of a rotatable automobile safety seat with locking assembly 160. It should be noted that locking mechanism 160 having subassembly 166 may be applied with any of the movement mechanisms described above, specifically mechanisms 130A, 130B, and 130C.

[0117] Figures 6E and 6F show the aperture cover 326 and the ratchet subassembly 166 in disassembled and assembled states, respectively. Figure 6G shows a bottom view of the assembled aperture cover 326 and ratchet subassembly 166. The ratchet subassembly 166 can include an upper ratchet ring 200 and a lower ratchet ring 202 that can be attached to a ratchet support 204. As seen in Figure 6F, the assembled ratchet subassembly 166 can surround the bearing 144 and can be mounted on the rotating arm 134, as seen in Figure 6G.

[0118] 6H illustrates a partially assembled safety seat showing the aperture cover 326 assembled with the base cover 124 and ratchet subassembly 166 of FIG. 6F. The base cover 124 may include two opposing bars 206 and 208 protruding from the base cover 124 of the base portion 104. Each bar 206 and 208 may be formed with a respective lever 210 and 212, or any other suitable switch or button extending therefrom and defining two opposing levers 210 and 212.

[0119] The levers 210 and 212 are insertable into corresponding openings 216 formed in the chair support 128 such that the levers 210 and 212 trap the chair portion 104 therebetween.

[0120] FIG. 6I shows the base cover 124 partially assembled, and FIG. 6J shows the assembled lock assembly 160 including the base cover 124 along with the ratchet subassembly 166. As seen in FIG. 6I, the bars 206 and 208 may each be flexibly connected to the base cover 124 in any suitable manner, such as via a bearing 220 and a spring 222 that permits rotation of the bar 206 or 208 in a clockwise or counterclockwise direction, as indicated by arrow 224. The spring 222 may be connected to the base cover 124 in any suitable manner, such as via a pin 228. The bearing 220 may be supported by a pivot 226 or in any other suitable manner.

[0121] The edges of each of the bars 206 and 208 may have protruding pawls 230 configured to engage with teeth on the ratchet subassembly 166, thereby locking the upper ratchet ring 200 or the lower ratchet ring 202. When locked, the bars 206 and 208 lock the levers 210 and 212, and thus the chair section 102 trapped between them. As seen in the inset of FIG. 6J, the pawl 230 on the right bar 206 locks the lower ratchet ring 202, preventing clockwise rotation, and the pawl 230 on the left bar 208 locks the upper ratchet ring 200, preventing counterclockwise rotation. Note that the direction of rotation can be reversed.

[0122] In some embodiments, ratchet subassembly 166 may include a single ratchet ring with three or more teeth. In some embodiments, ratchet subassembly 166 may include three or more ratchet rings. Lock assembly 160 may be configured to lock at any suitable angle, less or more than the four-quarter lock position shown.

[0123] In some embodiments, the locking assembly 160 is formed with one degree of freedom, and therefore, preventing rotation of the swivel arm 134 about the base portion 104 is sufficient to lock the chair portion 102.

[0124] Figure 6K shows the bottom base 320 (and thus the chair portion 102 mounted on the base portion 104) positioned forward in the orientation of vehicle travel and fully locked by the locking assembly 160, as shown in Figure 6J. As can be seen in the inset, the pawl 230 on the right bar 206 locks the lower ratchet ring 202, thus preventing clockwise rotation, and the pawl 230 on the left bar 208 locks the upper ratchet ring 200, thus preventing counterclockwise rotation.

[0125] 6L shows the bottom base 320 in an unlocked state while being rotated clockwise to the right by pushing the right lever 210 in the direction of arrow 240. As can be seen in the inset, the pawl 230 on the right bar 206 locks the lower ratchet ring 202, thus preventing clockwise rotation, while the pawl 230 on the left bar 208 is disengaged from the upper ratchet ring 200, thus allowing clockwise rotation.

[0126] The lever 210 or 212 may be replaced by any switch or button, which may be pressed by a caretaker in a window formed in the chair portion 102 or any other suitable location.

[0127] Clockwise rotation is completed to a perpendicular orientation relative to the rearward orientation, as shown in Figure 6M. As seen in the inset, pawl 230 on right bar 206 locks lower ratchet ring 202, thus preventing clockwise rotation, and pawl 230 on left bar 208 locks upper ratchet ring 200, thus preventing counterclockwise rotation.

[0128] 6N shows the bottom base 320 in an unlocked state during clockwise rotation to the left by further pushing the right lever 210 in the direction of arrow 240. As can be seen in the inset, the pawl 230 on the right bar 206 locks the lower ratchet ring 202, thus preventing clockwise rotation, while the pawl 230 on the left bar 208 is disengaged from the upper ratchet ring 200, thus allowing clockwise rotation.

[0129] In some embodiments, locking system 160 may be incorporated into other pivotable systems designed to rotate. For example, locking system 160 including ratchet subassembly 166 or any other element described herein may be used in a swivel chair, a swivel screen support, or any other pivotable system.

[0130] In some embodiments, locking assembly 160 may be configured to lock a portion of the pivotable system. A ratchet subassembly 166 may be attached to a portion of the pivotable system. The ratchet may be positioned in any suitable location within the pivotable system and configured to engage the teeth of ratchet subassembly 166, thereby locking the ratchet. A bar and extension arm may or may not be included.

[0131] 6A-6N show the rotation assembly 310 and / or lock assembly 160 mounted within the base portion 104. It should be understood that the rotation assembly 310 and / or lock assembly 160 may be located in any suitable location within the safety seat 300, such as within the chair portion 102. In some embodiments, the rotation assembly 310 and / or lock assembly 160 may be constructed as an auxiliary unit configured to engage with existing commercially available safety seats.

Claims

1. 1. A rotatable motor vehicle safety seat assembly comprising: an upper part comprising a seat having a forward-most point and configured to accommodate a child, and a seat rotation element having a fixed connection to the seat so as to be rotatable therewith about a seat rotation axis; a lower portion configured to be attached to a passenger seat in a motor vehicle, the lower portion having a longitudinal direction and a central axis spaced from the seat rotation axis; and a movement mechanism connected to a seat rotation element and operable to convert rotation of the seat rotation element about a seat rotation axis into movement of the seat rotation element along a circular path about a central axis, and vice versa, so that when the seat is rotated by a user, the seat, together with the seat rotation element, is moved eccentrically with respect to the central axis and simultaneously rotated about the seat rotation axis, thereby ensuring continuously changing the distance between the forward-most point of the seat and the central axis.

2. 2. The rotatable motor vehicle safety seat assembly of claim 1, wherein the seat has a default orientation in which a line connecting the central axis and the seat rotation axis is parallel to the longitudinal direction of the motor vehicle, and a maximum rotation orientation in which the line is perpendicular to the longitudinal direction of the motor vehicle, and optionally the distance is a maximum when the seat reaches its maximum rotation orientation.

3. 2. The rotatable motor vehicle safety seat assembly of claim 1, wherein the movement mechanism is operable to translate clockwise rotation of the seat rotation element about the seat rotation axis into counterclockwise movement of the seat rotation element along the circular orbit about the central axis, and vice versa.

4. 2. The rotatable automobile safety seat assembly of claim 1, wherein at least a portion of said movement mechanism is located between said seat rotation axis and said central axis.

5. 2. The rotatable automobile safety seat assembly of claim 1, wherein said lower portion comprises a cavity that houses at least a portion of said movement mechanism, and optionally said cavity houses at least a portion of said seat rotation element.

6. 2. The rotatable automobile safety seat assembly of claim 1, wherein the movement mechanism is operable to allow a user to rotate the seat by manually pulling on the seat.

7. 10. The rotatable automobile safety seat assembly of claim 1, wherein said movement mechanism comprises at least one rotatable element, and optionally said seat rotation element and said movement mechanism form a gear assembly.

8. 8. The rotatable automobile safety seat assembly of claim 7, wherein the movement mechanism comprises at least two rotatable elements, including a central gear having an axis coincident with the central axis and a fixed position relative to the lower portion at least when the movement mechanism is operable, and an intermediate gear rotatably engaged with the central gear and each of the seat rotation elements.

9. 2. The rotatable automobile safety seat assembly of claim 1, wherein the movement mechanism comprises a peripheral ring having an axis coincident with the central axis and a fixed position relative to the lower portion at least when the movement mechanism is operable, the peripheral ring being formed with internal teeth that mesh with the exterior of the seat rotation element; and optionally, the movement mechanism comprises a central wheel having an axis coincident with the central axis and a fixed position relative to the lower portion at least when the movement mechanism is operable, and a belt connecting between the seat rotation element and the central wheel, whereby eccentrically rotating the seat with the seat rotation element about the central axis moves the belt to affect rotation of the seat rotation element and the seat about the seat rotation axis.

10. 10. The rotatable automobile safety seat assembly of claim 1, further comprising a soft lock mechanism operable to stabilize said seat at a predetermined orientation angle along said circular track while said seat is rotating.

11. a locking mechanism operable to secure the seat with the seat rotation element to the lower portion, the locking mechanism configured to at least unlock the seat rotation element from the lower portion and allow rotation of the seat with the seat rotation element relative to the lower portion; Optionally, said locking mechanism comprises: a first unlocked state, in which the movement mechanism is operable to allow rotational movement of the seat with the seat rotation element about the central axis of the lower portion, while the locking mechanism prevents rotational movement of the seat with the seat rotation element about the seat rotation axis; a second unlocked state in which the seat with the seat rotation element is free to rotate about the seat rotation axis and the movement mechanism is operable to translate the rotational movement of the seat with the seat rotation element about the seat rotation axis into the rotational movement of the seat with the seat rotation element about the central axis, and vice versa; Optionally, the locking mechanism is configured to allow rotation of the seat with the seat rotation element relative to the lower portion in one direction while preventing rotation of the seat with the seat rotation element relative to the lower portion in an opposite direction; 10. The rotatable automobile safety seat assembly of claim 1, wherein optionally, said locking mechanism comprises a ratchet assembly.

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