Rotation lock indicator mechanism and child seat

Abstract

The present disclosure provides a child car seat. The child car seat includes a base, a seat, and a misuse prevention mechanism. The seat is rotatably disposed on the base and has a forward-facing state and a rearward-facing state relative to the base. The misuse prevention mechanism includes a limiting groove disposed on the seat and a locking element disposed on the base. The locking element engages with the limiting groove to prevent the seat from rotating from the rearward-facing state to the forward-facing state, and the locking element includes two limiting structures. The child car seat of the present disclosure can prevent the seat from rotating incorrectly, providing high safety.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates to the field of children's products, and more particularly to rotation lock indicator mechanisms and child seats. [Background technology]

[0002] A child car seat is a type of seat specially designed for children. A child car seat can be installed in a vehicle for a child to sit in, and the child can be restrained by the child car seat to ensure their safety.

[0003] Existing child car seats typically include a base and a seat mounted on the base, with the ISOFIX interface located directly on one side of the base. The base may also have support legs for a more secure fit. To accommodate children of different ages, the seat can rotate relative to the base and be positioned in either a forward-facing or rearward-facing position. Generally, the forward-facing position is more suitable for older children, while the rearward-facing position is more suitable for younger children.

[0004] The forward-facing position is dangerous for young children. However, conventional child car seats lack a convenient misuse prevention mechanism to prevent accidental rotation from a rearward-facing position to a forward-facing position. Therefore, there is a need to provide a child car seat that conveniently and reliably prevents accidental rotation.

[0005] With growing concern about child safety, child car seats have become an essential vehicle for children. To accommodate children of various ages and sizes, child car seats are available in two positions: forward-facing and rear-facing. Generally, child car seats can be rotated between the forward- and rear-facing positions. However, existing child car seats with forward- and rear-facing rotation functions lack corresponding instructions for rotating the seat to the forward- or rear-facing positions. This leaves users uncertain as to whether the seat is rotated and secured in place when rotating the seat to the corresponding position, affecting the user experience and reducing safety. For example, if it is unclear whether the seat is clamped in place (since the seat cannot be rotated when clamped), there is a risk that the child car seat may be rotated unintentionally while the vehicle is moving if the seat is not clamped in place.

[0006] Therefore, there is an urgent need for a rotation lock indicator mechanism that can tell whether the child car seat has been rotated and locked into place. Summary of the Invention

[0007] According to some embodiments, a child car seat includes a base, a seat, and a misuse prevention mechanism, wherein the seat is rotatably disposed on the base and has a forward-facing state and a rear-facing state relative to the base, and the misuse prevention mechanism includes a limiting groove disposed on the seat and a locking element disposed on the base, the locking element engages with the limiting groove to prevent the seat from rotating from the rear-facing state to the forward-facing state, and the locking element includes a limiting structure for limiting movement of the locking element relative to the seat.

[0008] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, the misuse prevention mechanism includes two of the locking elements and two actuating elements corresponding to the two locking elements, respectively, and the two locking elements are arranged symmetrically.

[0009] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child seat, one of the two actuating elements operates to prevent a corresponding one of the locking elements from engaging with the limiting groove, thereby allowing the seat to rotate in one direction from the rearward-facing position to the forward-facing position.

[0010] In addition to or as an alternative to one or more features described herein, a further embodiment of the child car seat further includes a rotating base, the rotating base being annularly shaped and including the limiting groove, two guide inclined surfaces, and an avoidance groove, the two guide inclined surfaces being arranged on either side of the limiting groove, and both ends of the avoidance groove being connected to the outer sides of the two guide inclined surfaces, respectively.

[0011] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, one end of the locking element comprises a limiting straight surface and an inclined surface, the locking element engages with the limiting groove via the limiting straight surface to prevent the seat from rotating from the rearward-facing state to the forward-facing state, and the inclined surface cooperates with one of the two guide inclined surfaces to guide the locking element into the limiting groove while the seat is rotating from the rearward-facing state to the forward-facing state.

[0012] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child seat, each side of the seat is provided with a rotation operating element that is operated to rotate the seat relative to the base.

[0013] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, the restraining structure comprises a first restraining structure and a second restraining structure, the first restraining structure comprising a first restraining hole and a first restraining element, and the second restraining structure comprising a second restraining hole and a second restraining element.

[0014] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, the first limiting element and the second limiting element are fixed to the base by passing through the first limiting hole and the second limiting hole, respectively, so that the locking element is movable along only one direction.

[0015] In addition to or as an alternative to one or more features described herein, a further embodiment of the child car seat further includes a restoring element, both ends of which abut against the first limiting hole and the first limiting element, respectively, thereby always applying a pressing force that moves the locking element toward the rotating base.

[0016] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, the first restricting hole and the second restricting hole are both elongated holes, the extension directions of the first restricting hole and the second restricting hole coincide with the one direction, and the first restricting element and the second restricting element are both screws.

[0017] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child seat, each side of the seat is provided with a rotation operating element that is operated to rotate the seat relative to the base.

[0018] In addition to or as an alternative to one or more features described herein, further embodiments of the child car seat include support legs, a sliding element, and a traction element, wherein the sliding element is telescopically disposed on the base, the support legs are pivotally connected to the sliding element and telescopically extend and retract with the sliding element, and the traction element rotates the support legs from an unfolded position to a folded position and pulls the support legs to move towards the base.

[0019] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, the traction element is a flexible element.

[0020] In addition to or in place of one or more features described herein, in further embodiments of the child car seat, the flexible element is a steel wire, a rope, or a woven tape.

[0021] In addition to or as an alternative to one or more features described herein, further embodiments of the child car seat may further include a drive element that rotates with the support leg, the drive element being configured to pull up on the traction element to move the support leg towards the pulling base.

[0022] In addition to or as an alternative to one or more features described herein, in further embodiments of the child car seat, the drive element is arranged on the support leg, and the drive element and the support leg form an integral structure and form part of the support leg, or alternatively, the drive element and the support leg are formed separately and connected and fixed via a fixing structure.

[0023] In addition to or as an alternative to one or more of the features described herein, in a further embodiment of the child car seat, the drive element is located at an upper end of the support leg.

[0024] In addition to or as an alternative to one or more of the features described herein, in further embodiments of the child car seat, the drive element is boss-shaped and includes an arc portion that cooperates with the traction element; alternatively, the drive element is pulley-shaped; alternatively, the drive element is post-shaped.

[0025] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, a first end of the traction element is connected to the base and a second end of the traction element is connected to one of the drive element and the upper end of the support leg.

[0026] In addition to or in place of one or more features described herein, in a further embodiment of the child car seat, the inner top wall of the base comprises a fixed post, and the first end of the traction element is fixed to the fixed post via a first fastener.

[0027] In addition to or as an alternative to one or more features described herein, a further embodiment of the child car seat further includes a stroke amplification mechanism having a first end connected to the base and a second end connected to the support leg via the traction element.

[0028] In addition to or in place of one or more features described herein, in a further embodiment of the child car seat, the stroke amplification mechanism is a diamond-shaped telescopic frame.

[0029] In addition to or in place of one or more features described herein, a further embodiment of the child car seat includes a fixed frame, the fixed frame being disposed within the base, and a first end of the stroke amplification mechanism being connected to the fixed frame via a second fastener.

[0030] In addition to or as an alternative to one or more features described herein, in a further embodiment of the child car seat, the seat is rotatably arranged on the base and has at least a forward-facing position and a rear-facing position, and the child car seat has a first use mode in which the sliding element is extended and the support legs are deployed to form ground supports, and a second use mode in which the sliding element is retracted and the support legs are folded into the bottom of the base.

[0031] According to some embodiments, the present disclosure provides a rotation lock indicator mechanism for indicating whether a seat of a rotatable child safety seat is positioned relative to a base, the rotation lock indicator mechanism being disposed on the seat of the child safety seat and connected to a rotation lock mechanism for locking the seat to the base, the rotation lock indicator mechanism including an unlock operating element, an unlock traction element, and a status indicator. The unlocking operation element is slidably connected to the seat and is switchable between a first position and a second position, one end of the unlocking traction element is connected to the unlocking operation element and the other end is connected to the rotation lock mechanism, the state indicator is disposed at least on the unlocking operation element and indicates the rotation lock state of the seat relative to the base, when the seat locks to the base via the rotation lock mechanism, the unlocking operation element is positioned at the first position by the action of the unlocking traction element, the state indicator indicates the first state, when the unlocking operation element is operated to move from the first position to the second position, the unlocking operation element drives the unlocking traction element to release the lock of the seat, and the state indicator indicates the second state.

[0032] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the unlock operating element is an unlock button, and the unlock button is movable from the first position to the second position by being pressed in a substantially vertical direction.

[0033] In addition to or as an alternative to one or more features described herein, a further embodiment of the rotation lock indicating mechanism includes an unlocking elastic reset element, one end of the unlocking elastic reset element connected to the seat and the other end connected to the unlocking operating element, the unlocking elastic reset element configured to provide a force to drive the unlocking operating element to the second position, thereby pulling the unlocking traction element so as to tend to move away from the rotation lock mechanism.

[0034] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicating mechanism, the unlocking elastic reset element is a tension spring.

[0035] In addition to or as an alternative to one or more features described herein, in a further embodiment of the rotation lock indicating mechanism, when the seat is locked, the force applied by the unlocking elastic reset element to the unlocking operating element, and therefore to the unlocking traction element, is less than the locking force provided by the rotation locking mechanism.

[0036] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the status indicator includes a first indicator element, the first indicator element being disposed on an outer surface of the unlock operating element, and when the seat is locked to the base, the unlock operating element is held in the first position by the unlock traction element and the first indicator element is exposed.

[0037] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the status indicator further includes a second indicator element, the second indicator element being disposed on an outer surface of the seat. When the seat is locked to the base, the unlocking operating element covers the second indicator element, and when the unlocking operating element is operated to the second position, the first indicator element is covered by the seat and the second indicator element is exposed. The first indicator element and the second indicator element display different indicator information.

[0038] In addition to or as an alternative to one or more features described herein, a further embodiment of the rotation lock indicating mechanism includes a fixed element fixedly connected to the seat, and the unlock operating element slidably disposed on the fixed element to slide between the first position and the second position relative to the seat.

[0039] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the status indicator includes a first indicator element, a second indicator element, an indicator window, and an indicator bar. The indicator bar is fixedly disposed on the fixed element, the first indicator element and the second indicator element are disposed vertically successively on the indicator bar, and the indicator window is disposed on the unlocking operation element. When the unlocking operation element is located at the first position, the indicator window exposes the first indicator element, and when the unlocking operation element is located at the second position, the indicator window exposes the second indicator element. The first indicator element and the second indicator element display different indicator information.

[0040] In addition to or in the alternative to one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the indicator bar is integrally formed with the locking element, and the first indicator element and the second indicator element exhibit different colors.

[0041] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the unlocking traction element is an unlocking steel wire.

[0042] In addition to or as an alternative to one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the rotation lock mechanism is disposed on the seat and is engageable with a locating hole on the base.

[0043] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the locating holes include a front locating hole and a rear locating hole, wherein the rotation lock mechanism engages with the front locating hole when the seat is in a forward-facing position and the rotation lock mechanism engages with the rear locating hole when the seat is in a rear-facing position.

[0044] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the rotation lock mechanism includes a fixed structure, a locking element, and a traction element. The fixed structure is fixedly disposed on the seat and has an open end. The locking element is disposed within the fixed structure and is slidable within the fixed structure, with one end of the locking element extending from the open end of the fixed structure to engage with the positioning hole. One end of the traction element is connected to the other end of the locking element, and the other end of the traction element is connected to the unlocking operation element of the rotation clamp indicator mechanism. When one end of the locking element extends from the fixed structure and engages with the positioning hole, the unlocking operation element is in the first position due to the action of the traction element, and when the unlocking operation element is operated to move from the first position to the second position, the locking element retracts into the fixed structure via the traction element.

[0045] In addition to or as an alternative to one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the rotation lock mechanism further includes a resilient reset element disposed between the fixing structure and the locking element, the resilient reset element constantly providing a force that drives one end of the locking element to extend from the fixing structure.

[0046] In addition to or as an alternative to one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the traction element and the unlocking traction element are integrated.

[0047] According to some embodiments, there is provided a rotation lock indicator mechanism for indicating whether a seat of a rotatable child safety seat is positioned relative to a base, the rotation lock indicator mechanism being disposed on the seat and connected to a rotation lock mechanism for locking the seat to the base, the rotation lock indicator mechanism including an unlock operating element, an unlock traction element, and a status indicator, the unlock operating element being slidably connected to the seat and switchable between a first position and a second position, one end of the unlock traction element being connected to the unlock operating element and the other end being connected to the rotation lock mechanism, the status indicator indicating a rotation lock status of the seat relative to the base, when the seat is locked to the base by the rotation lock mechanism, the unlock operating element is in the first position and the status indicator is exposed, and when the unlock operating element is operated to move from the first position to the second position, the unlock operating element drives the unlock traction element to unlock the seat and the status indicator is hidden.

[0048] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the status indicator includes a first indicator element disposed on the unlocking operating element and exposed when the seat is locked to the base, and when the lock between the seat and the base is released, the first indicator element is hidden by the seat as the unlocking operating element moves.

[0049] In addition to or in place of one or more features described herein, in a further embodiment of the rotation lock indicator mechanism, the status indicator further includes a second indicator element, the second indicator element being disposed on the seat or the unlocking operating element and being hidden by the unlocking operating element when the seat is locked to the base, and the second indicator element being exposed as the unlocking operating element is moved when the lock between the seat and the base is released.

[0050] According to some embodiments, a child safety seat includes a seat, a base, and the rotation lock indicator mechanism of any of the above embodiments, wherein the seat is disposed on the base and the rotation lock indicator mechanism is disposed on a side of the seat.

[0051] In addition to or as an alternative to one or more features described herein, a further embodiment of the child car seat includes two rotation lock indicator mechanisms, each of which is located on either side of the seat. The traction elements of the rotation lock mechanisms include a first traction element and a second traction element. One end of the first traction element is connected to the locking element, and the other end of the first traction element is connected to one of the two rotation lock indicator mechanisms. One end of the second traction element is connected to the locking element, and the other end of the second traction element is connected to the other of the two rotation lock indicator mechanisms. [Brief explanation of the drawings]

[0052] Various objects, features, and advantages of the present disclosure will become more apparent from the following detailed description of preferred embodiments thereof, taken in conjunction with the accompanying drawings, which are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout.

[0053] [Figure 1] 1 is a perspective view of a child car seat of the present disclosure.

[0054] [Figure 2] FIG. 2 is a rear perspective view of the child car seat of the present disclosure.

[0055] [Figure 3] 1 is a partial perspective view of a child car seat according to the present disclosure.

[0056] [Figure 4] 1 is a perspective view of a child car seat of the present disclosure, the seat being rotated from a rear-facing position to a forward-facing position.

[0057] [Figure 5] 5 is a partial perspective view showing the internal structure of the child car seat of the present disclosure, with the seat in the position shown in FIG. 4.

[0058] [Figure 6] 1 is a perspective view of a child car seat of the present disclosure, the seat being in a forward-facing position.

[0059] [Figure 7] 7 is a partial perspective view showing the internal structure of the child car seat of the present disclosure, with the seat in the position shown in FIG. 6. FIG.

[0060] [Figure 8] 1 is a partial perspective view showing the internal structure of the child car seat of the present disclosure, in which the locking element is engaged with the limiting groove.

[0061] [Figure 9] 1 is a partial perspective view showing the internal structure of the child car seat of the present disclosure, in which the locking element is not engaged with the limiting groove. FIG.

[0062] [Figure 10] 1 is a perspective view showing a child car seat in a forward-facing position according to an embodiment of the present disclosure. FIG.

[0063] [Figure 11] 1 is a perspective view of a child car seat in a rear-facing position according to an embodiment of the present disclosure. FIG.

[0064] [Figure 12] 1 is a perspective view of a base of a child car seat according to an embodiment of the present disclosure, viewed from the front.

[0065] [Figure 13] 1 is a perspective view of a base of a child car seat according to an embodiment of the present disclosure, viewed from the rear side.

[0066] [Figure 14a] 1 is a cross-sectional view showing a child car seat in a forward-facing position according to an embodiment of the present disclosure.

[0067] [Figure 14b] FIG. 14b is a partial enlarged view of block A in FIG. 14a, showing the rotation lock mechanism engaging with the front locating hole in the base.

[0068] [Figure 14c] 10 shows the locking element of the rotation locking mechanism in a retracted state.

[0069] [Figure 15a] 1 shows a cross-sectional view of a child car seat in a rear-facing position according to an embodiment of the present disclosure.

[0070] [Figure 15b] FIG. 15b is a partial enlarged view of block B in FIG. 15a, showing the rotation lock mechanism engaging the rear positioning hole in the base.

[0071] [Figure 16a] A perspective view showing a child seat in an embodiment of the present disclosure, in which the upper surface of the seat is partially removed to show the locking structure of the rotary lock mechanism.

[0072] [Figure 16b] A partially enlarged view of block C in FIG. 16a.

[0073] [Figure 16c] A perspective view showing the internal structure of the locking structure shown in FIG. 16b.

[0074] [Figure 16d] A perspective view showing the traction element shown in FIG. 16c is shown.

[0075] [Figure 17a] A partial perspective view showing a child seat in a locked state with respect to the base in an embodiment of the present disclosure.

[0076] [Figure 17b] A cross-sectional view taken along line D-D of FIG. 17a is shown.

[0077] [Figure 18a] A partial perspective view showing a child seat in an unlocked state with respect to the base in an embodiment of the present disclosure.

[0078] [Figure 18b] A cross-sectional view taken along line E-E of FIG. 18a is shown.

[0079] [Figure 19] A perspective view of the unlocking operation element of the rotary lock instruction mechanism in an embodiment of the present disclosure.

[0080] [Figure 20] A perspective view of the lower cover of the seat in an embodiment of the present disclosure.

[0081] [Figure 21] FIG. 10 is a partial perspective view showing a child car seat locked to a base in another embodiment of the present disclosure.

[0082] [Figure 22] 21a taken along line FF.

[0083] [Figure 22a] FIG. 10 is a partial perspective view of a child car seat in an unlocked state relative to a base in accordance with another embodiment of the present disclosure.

[0084] [Figure 22b] A cross-sectional view taken along line GG in FIG. 22a is shown.

[0085] [Figure 23] FIG. 10 is a perspective view of an unlocking operation element of a rotation lock indicating mechanism in another embodiment of the present disclosure.

[0086] [Figure 24] FIG. 10 is a perspective view of a fixing element of a rotation lock indicator mechanism in another embodiment of the present disclosure. [Explanation of symbols]

[0087] 1. Child seat 10 base 110 Anchor part 120 Receiving hole 130 Rotating Base 131 Restriction groove 132 Avoidance Groove 133 Guide inclined surface 140 Base upper cover 20 sheets 210 Rotational Operation Element 50 Support legs 610 Button 611 Drive Shot 612 Guide rib 620 Locking Elements 621 Protruding column 623 Slope section 6231 Restricted Linear Surface 6232 Slope 624 First Restriction Hole 625 Second Restriction Hole 630 Restoration Element 640 First Limiting Element 650 Second Limiting Factor 1a Child seat 100a sheet 101a Lower cover 102a Rotating Base 110a Rotation lock mechanism 111a Locking element 112a Traction Elements 1121a First traction element 1122a Second traction element 1123a Connector 113a Elastic reset element 114a Fixed structure 115a screw 120a Rotation lock indicator mechanism 121a Unlocking operation element 122a Unlocking Traction Element 1221a First unlocking traction element 1222a Second unlocking traction element 123a Unlocking elastic reset element 124a Status indicator 1241a First instruction element 1242a Second instruction element 1243a Indicator window 1244a Instruction bar 125a Fixed element 126a Screw 200a base 201a Positioning hole 2011a Front positioning hole 2012a Rear positioning hole DETAILED DESCRIPTION OF THE INVENTION

[0088] In order to further explain the principles and structures of the present disclosure, preferred embodiments of the present disclosure will be described in detail with accompanying drawings. However, the embodiments are for illustration and description purposes only and cannot be used to limit the scope of protection of the present disclosure.

[0089] The terminology used in this disclosure is intended for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "the," and "above" are intended to include the plural forms as well, unless clearly indicated otherwise. Also, as used herein, the term "and / or" should be understood to refer to and include any and all possible combinations of one or more of the associated listed items.

[0090] The following is a more detailed description of various concepts and embodiments related to a child safety seat. The seat of the child safety seat can be rotated between a rear-facing position, a side-facing mode, and a forward-facing position for convenient use. It should be understood that the various concepts introduced above and described in more detail below can be implemented in a variety of ways. Examples of specific embodiments and applications are primarily for illustrative purposes, to enable those skilled in the art to implement obvious embodiments and alternatives.

[0091] The child car seat can be placed on a vehicle seat and secured by anchor elements to provide safety protection for the child.

[0092] FIG. 1 is a perspective view of a child car seat according to the present disclosure, and FIG. 2 is a rear perspective view of the child car seat according to the present disclosure.

[0093] The child car seat 1 of the present disclosure may include a base 10, a seat 20 rotatably disposed on the base 10 and having a forward-facing state and a rear-facing state relative to the base 10, an anti-misuse mechanism disposed on the seat 20 and including a limiting groove 132, and a locking element 620 disposed on the base 10. The locking element 620 can engage with the limiting groove 132 to prevent the base 10 from rotating from the rear-facing state to the forward-facing state. Engagement of the locking element 620 with the limiting groove 132 is selective, and the locking element 620 may be operated to engage and disengage with the limiting groove 132, as will be described in detail below. The seat 10 can rotate 360 degrees around the base 20.

[0094] The child car seat 1 may further include an anchor portion 110 disposed at the rear of the base 10 and extending rearward, and a support leg 50 disposed at the front of the base 10 and extending downward. The lower end of the support leg 50 may abut against the floor of the vehicle compartment. The anchor portion 110 may be, for example, a fixing device for an ISOFIX interface and may have two rigid arms disposed on both sides. The support leg 50 provides a third fixing point for the child car seat 1, thereby better preventing the child car seat 1 from tipping over when subjected to an impact. Optionally, the anchor portion 110 may be a fixing device for another interface, such as the LATCH (lower anchors and tethers for children) system, and the present disclosure is not limited thereto.

[0095] In this disclosure, a forward-facing position refers to seat 20 facing toward the front of the vehicle, and a rear-facing position refers to seat 20 facing toward the rear of the vehicle. In other words, when a child sits in seat 20 in a forward-facing position, the child faces toward the front of the vehicle, and when a child sits in seat 20 in a rear-facing position, the child faces toward the rear of the vehicle.

[0096] The misuse prevention mechanism is configured to prevent the seat 20 from being accidentally rotated from a rearward-facing position to a forward-facing position. This function can be realized by performing the function at a certain point during the rotation process. Specifically, there may be a rotation threshold angle between the rearward-facing position and the forward-facing position of the seat 20. The rotation threshold angle may be any angle between 90° and 180°, for example, 100°, 110°, 120°, 130°, 140°, 150°, 160°, or 170°. When the base 20 rotates to the rotation threshold angle, the locking element 620 extends into and engages with the limiting groove 132, thereby preventing further rotation of the base 20 toward the forward-facing position. The locking element 620 may be activated to prevent the base 20 from extending into the limiting groove 132 when the base 20 rotates to the rotation threshold angle. In this way, the base 20 can be further rotated to the forward-facing position. Optionally, the rotation threshold angle may refer to multiple angles, for example, two angles, three angles, or the like.

[0097] When the seat 20 is in a rear-facing position, the seat 20 can be rotated clockwise or counterclockwise to a forward-facing position. The misuse prevention mechanism may include two locking elements 620. The misuse prevention mechanism may further include two actuating elements 610, one for each of the two locking elements 620. The two locking elements 620 may be arranged symmetrically. Specifically, the two locking elements 620 may be arranged symmetrically on either side of the base 10 at the front, although the present disclosure is not limited thereto.

[0098] The rotation operating element 210 may be provided on each side of the base 20. The rotation operating element 210 is configured to be operated to rotate the base 20 relative to the base 10. As shown in FIG. 1 , two rotation operating elements 210 are formed symmetrically on the front of the base, protrude upward, and have an inwardly recessed recess to form a handle-like shape. The two rotation operating elements 210 are convenient for manual operation to rotate the base 20 relative to the base 10 in a clockwise or counterclockwise direction, respectively.

[0099] The base 10 may have two receiving holes 120 formed at positions corresponding to the two locking elements 620. The actuating element 610 may be a button. In other embodiments, the actuating element 610 may be a handle, a lever, or the like. The present disclosure is not limited to a specific form of the actuating element 610.

[0100] The two actuating elements 610 may be arranged to protrude from the outer surface of the base 10 through the two receiving holes 120, or may be biased to protrude only a small distance from the outer surface of the base 10, or may be biased to be flush with the outer surface of the base 10.

[0101] Optionally, the two actuating elements 610 may be positioned flush with the outer surface of the base 10 or may be actuated to be recessed within the base 10 .

[0102] FIG. 3 is a partial perspective view of the child car seat of the present disclosure, showing the structure underneath the seat 20.

[0103] The seat 20 may include a rotating base 130. The rotating base 130 may be formed on a lower portion of the seat 20. The rotating base 130 may generally be formed in an annular shape, such as a circular ring shape. The rotating base 130 may include a limiting groove 131, two guide inclined surfaces 133, and an avoidance groove 132.

[0104] The limiting groove 131 may be disposed at a linear position on the base 20, but the present disclosure is not limited thereto. The two guide inclined surfaces 133 may be disposed on both sides of the limiting groove 131. Both ends of the avoidance groove 132 are connected to the outer side surfaces of the two guide inclined surfaces 133, respectively. That is, the avoidance groove 132 is formed at all positions on the outer periphery of the rotating base 130 except for the two guide inclined surfaces 133 and the limiting groove 131, so as to surround most of the outer periphery of the annular rotating base 130. The avoidance groove 132 is configured to avoid the locking element 620. Therefore, even when the base 20 rotates relative to the base 10, the avoidance groove 132 does not interfere with the movement of the locking element 620. Each of the guide inclined surfaces 133 is smoothly connected to the avoidance groove 132. The two side walls of the limiting groove 131 can protrude outward substantially perpendicular to the outer periphery of the rotating base 130. Each of the two guide inclined surfaces 133 extends from one end of the avoidance groove 132 toward the limiting groove 131 so as to form a smooth transition structure between the avoidance groove 132 and the limiting groove 131 .

[0105] Fig. 4 is a perspective view showing a child car seat of the present disclosure, with the seat in the process of rotating from a rear-facing position to a forward-facing position, Fig. 5 is a partial perspective view showing the internal structure of the child car seat of the present disclosure, with the seat in the position shown in Fig. 4. Fig. 6 is a perspective view showing a child car seat of the present disclosure with the seat in a forward-facing position, and Fig. 7 is a partial perspective view showing the internal structure of the child car seat of the present disclosure with the seat in the position shown in Fig. 6.

[0106] One end of the locking element 620 (i.e., the end facing the rotating base 130) includes an inclined surface portion 623, which has a limiting linear surface 6231 and an inclined surface 6232 (see FIG. 9 ). The limiting linear surface 6231 may be formed as a recess in the side surface of the locking element 620. The inclined surface 6232 may be formed as an inclined surface connecting the side surface and end surface of the locking element 620.

[0107] When the locking element 620 is engaged with the limiting groove 131, the limiting linear surface 6231 abuts against one side surface of the limiting groove 131, preventing the base 20 from rotating relative to the base 10. That is, the locking element 620 engages with the limiting groove 131 via the limiting linear surface 6231, preventing the base 20 from rotating from a rearward-facing state to a forward-facing state.

[0108] When the actuating element 610 is not actuated, during rotation of the base 20 from the rearward-facing state to the forward-facing state, the inclined surface 6232 cooperates with the guide inclined surface 133, thereby allowing the base 20 to continue rotating, and at the same time, the guide inclined surface 133 pushes the locking element 620 away from the rotating base 130 via the inclined surface 6232. That is, during rotation of the base 20 from the rearward-facing state to the forward-facing state, the inclined surface 6232 cooperates with one of the two guide inclined surfaces 133 to guide the locking element 620 into the limiting groove 131.

[0109] A driving chute 611 is formed on the actuating element 610. Preferably, two driving chutes 611 may be formed on the actuating element 610, and the two driving chutes 611 are arranged opposite to each other in the moving direction of the locking element 620 toward the rotating base 130 so that the movement of the actuating element 610 becomes more stable. That is, the imaginary connecting line formed by the two driving chutes 611 is perpendicular to the pressing direction of the locking element 620 toward the rotating base 130. A protruding post 621 may be formed on one end of the locking element 620 (i.e., the end away from the rotating base 130). The protruding posts 621 protrude laterally from both sides of the locking element 620 (i.e., protrude in a direction perpendicular to the direction of movement of the locking element 620 toward the rotating base 130) and are inserted into the driving chute 611, so that movement of the operating element 610 in one direction (e.g., up and down, up and down) causes the locking element 620 to move in another direction (either toward the rotating base 130 or away from the rotating base 130, which may also be referred to as the "radial direction of the rotating base 130"). Specifically, when the operating element 610 is pressed down, the locking element 620 moves in a direction away from the rotating base 130. The driving chute 611 may be formed in an elongated shape so that the protruding posts 621 move within the driving chute 611, and the length of the driving chute 611 is substantially equal to the stroke length of the locking element 620 moving in a direction away from the rotating base 130. The operating element 610 may be arranged vertically, and the locking element 620 may be arranged horizontally. The drive chute 611 may be positioned to be inclined relative to both the actuation element 610 and the locking element 620. For example, the drive chute 611 may be positioned to form an included angle of 45° relative to both the actuation element 610 and the locking element 620. Optionally, the drive chute 611 may be positioned to form an included angle of less than 45° (e.g., 30°) relative to the actuation element 610, and optionally, the drive chute 611 may be positioned to form an included angle of 45° or more (e.g., 60°) relative to the actuation element 610. The present disclosure does not limit the inclination angle of the drive chute 611.

[0110] The guide rib 612 may be formed on the actuating element 610 or the locking element 620. The guide rib 612 may be formed as a linear rib protruding from the side of the actuating element 610 and the locking element 620. That is, the direction in which the guide rib 612 protrudes outward is perpendicular to the direction in which the actuating element moves. Preferably, in this embodiment, two guide ribs 612 may be formed on the actuating element 610 and the locking element 620 to make the movement of the actuating element 610 more stable. The guide rib 612 may be disposed above the drive chute 611 or may be vertical. The guide rib 612 is configured to cooperate with a corresponding structure on the base 10 to restrict the actuating element 610 to move only in the vertical direction.

[0111] To reduce the weight of the actuating element 610 and the amount of material used to manufacture the actuating element 610, multiple holes may be formed in the actuating element 610.

[0112] FIG. 8 is a partial perspective view showing the internal structure of the child car seat of the present disclosure when the locking element is engaged with the limiting groove, and FIG. 9 is a partial perspective view showing the internal structure of the child car seat of the present disclosure when the locking element is not engaged with the limiting groove.

[0113] The locking element 620 includes a restricting structure. Specifically, the locking element 620 may include two restricting structures, which may include a first restricting structure and a second restricting structure. The first restricting structure may include a first restricting hole 624 and a first restricting element 640, and the second restricting structure may include a second restricting hole 625 and a second restricting element 650.

[0114] The first limiting hole 624 and the second limiting hole 625 are each formed in an elongated shape along the radial direction of the rotating base 130. The first limiting hole 624 may be closer to the rotating base 130 than the second limiting hole 625. The first limiting element 640 and the second limiting element 650 may be fixed to the base 10 through the first limiting hole 624 and the second limiting hole 625, respectively, thereby allowing the locking element 620 to move only along the radial direction of the rotating base 130. That is, the axes of the first limiting element 640 and the second limiting element 650 are approximately perpendicular to the surface of the limiting groove of the rotating base 130. Similarly, the extension directions of the first limiting hole 624 and the second limiting hole 625 are approximately perpendicular to the surface of the limiting groove of the rotating base 130.

[0115] The child car seat 1 may further include a restoring element 630. Two ends of the restoring element 630 may abut against the first restricting hole 624 and the first restricting element 640, respectively, to constantly apply a pushing force to move the locking element 620 toward the rotating base 130. The restoring element 630 may be disposed within the first restricting hole 624. The first restricting hole 624 may have a length sufficient to accommodate the restoring element 630. The restoring element 630 may be a coil spring. Optionally, the restoring element 630 may be a separate component capable of providing a restoring force. Optionally, two ends of the restoring element 630 may abut against the second restricting hole 625 and the second restricting element 650, respectively. The first restricting element 640 and the second restricting element 650 may be screws. Optionally, the first limiting element 640 and the second limiting element 650 may be separate parts fixed to the base 10 and extending into the first limiting hole 624 and the second limiting hole 625, respectively.

[0116] When the seat 20 is rotated from a rearward-facing position to a forward-facing position, the locking element 620 moves along the avoidance groove 132. The avoidance groove 132 does not hinder the movement of the locking element 620. When the base 20 is rotated to a position where the locking element 620 contacts the guide inclined surface 133, the guide inclined surface 133 pushes the locking element 620 in the radial direction of the rotating base 130 and in a direction away from the rotating base 130 via the inclined surface 6232. Because the first limiting element 640 and the second limiting element 650 restrict the first limiting hole 624 and the second limiting hole 625, the locking element 620 can only move precisely in the radial direction of the rotating base 130. Furthermore, because the first limiting element 640 and the second limiting element 650 are restricted at two positions, the locking element 620 does not sway or rotate by itself during movement. This allows the locking element 620 to smoothly expand and contract and has excellent mobility. The locking element 620 pushes the seat 20 away from the rotating base 130, allowing the seat 20 to continue rotating without being blocked by the side wall of the limiting groove 131. When the base 20 is rotated until the locking element 620 is aligned with the limiting groove 131, the restoring element 630 pushes the locking element 620 into the limiting groove 131. At this time, the limiting linear surface 6231 abuts against the side wall of the limiting groove 131, preventing the seat from continuing to rotate (as shown in FIG. 5). A warning sign is displayed on the operating element 610. When the child car seat is used for a child between 0 and 105 cm tall or under 15 months of age, it is recommended that the child car seat be used in a forward-facing position. This warning sign serves as a reminder or reference for the operator to determine whether to push the operating element 610 downward, and a warning action is issued to prevent misuse. When it is necessary to press down the actuating element 610, the downward movement of the actuating element 610 is transmitted to the locking element 620 through cooperation between the driving chute 611 and the protruding post 621, so that the locking element 620 moves in the radial direction of the rotating base 130 and in the direction away from the rotating base 130 against the restoring force of the restoring element 630. That is, the actuating element 610 disengages the locking element 620 from the limiting groove 131. The operator can continue to press the actuating element 610 downward while simultaneously rotating the base 20 until the locking element 620 passes through the limiting groove 131, and then release the actuating element 610.Finally, the seat 20 can be continuously rotated to a forward facing position.

[0117] It should be understood that the above process may also occur during rotation of the seat 20 from a forward-facing position to a rear-facing position. Thus, the child seat 1 of the present disclosure may also prevent the seat 20 from being accidentally rotated from a forward-facing position to a rear-facing position.

[0118] 10 and 11 are perspective views showing the child car seat in different states of use, and FIGS. 12 and 13 are perspective views of the base of the child car seat as seen from the front and rear, respectively.

[0119] 10 and 11, an embodiment of the present disclosure provides a child car seat 1a including a seat 100a and a base 200a, and the seat 100a is disposed on the base 200a. The child car seat 1a has two usage states: a forward-facing state (state shown in FIG. 10), i.e., a state in which the seat is disposed in the direction in which the vehicle moves forward, and a rear-facing state (state shown in FIG. 11), i.e., a state in which the seat is disposed in the direction opposite to the direction in which the vehicle moves forward. The child car seat 1a of the present disclosure can be switched between the forward-facing state and the rear-facing state by rotating the seat 100a relative to the base 200a.

[0120] Specifically, the child car seat 1a of the present disclosure includes a rotation lock mechanism 110a, which is disposed on the seat 200a, for example, directly behind the bottom of the seat 200a, and can engage with a correspondingly disposed positioning hole 201a on the base 200a, thereby realizing locking of the seat 100a relative to the base 200a when the child car seat 1a is rotated to a corresponding use state.

[0121] 12 and 13, the positioning holes 201a include a front positioning hole 2011a and a rear positioning hole 2012a, and the front positioning hole 2011a and the rear positioning hole 2012a may each be disposed on the lateral centerline of the base 200a. When the base 100a is in a forward-facing state, the rotation lock mechanism 110a engages with the front positioning hole 2011a, and when the base 100a is in a rear-facing state, the rotation lock mechanism 110a engages with the rear positioning hole 2012a.

[0122] Figures 14a and 14b show the rotation lock mechanism when the child car seat is in a forward-facing position, Figures 15a and 15b show the rotation lock mechanism when the child car seat is in a rear-facing position, and Figures 16a to 16d show the fixing structure and its internal structure, respectively.

[0123] In one embodiment, as shown in FIG. 14b, the rotation lock mechanism 110a includes a locking element 111a, a traction element 112a, and a fixed structure 114a. The fixed structure 114a is fixedly disposed on the base 100a, and one end of the fixed structure 114a is open. For example, as shown in FIG. 16A, the fixed structure 114a is fixedly disposed on the rotating base 102a of the base 100a by screws 115a disposed on both sides of the fixed structure 114a, and can rotate together with the base 100a relative to the base 100a, with its open end cooperating with a front positioning hole 2011a or a rear positioning hole 2012a. In one embodiment, the rotating base 102a can slide relative to other parts of the seat 100a to adjust the tilt angle of the seat. Furthermore, in other embodiments, for example, embodiments without a rotating base 102a, the fixed structure 114a may be fixed directly to the base 100a.

[0124] 14b and 15b, the locking element 111a is disposed within the fixed structure 114a and can slide within the fixed structure 114a so that one end of the locking element 111a extends from the open end of the fixed structure 114a and engages with the front positioning hole 2011a or the rear positioning hole 2012a. One end of the traction element 112a is connected to the other end of the locking element 111a, and the other end of the traction element 112a is connected to an unlocking device (e.g., an unlocking operation element 121a, which will be described in detail below). For example, the traction element 112a may be a steel wire, although the present disclosure is not limited thereto.

[0125] In one embodiment, an unlocking device (e.g., unlocking operation element 121a) may be disposed on each side of the child car seat 1a, and the traction element 112a of the rotation locking mechanism 110a may include a first traction element 1121a and a second traction element 1122a. As shown in Fig. 16d, one end of the first traction element 1121a and one end of the second traction element 1122a are connected together via a connector 1123a (e.g., a steel wire head), and then connected to the locking element 111a via the connector 1123a. When either of the unlocking devices on both sides of the child car seat 1a is operated, the locking element 111a can be driven to achieve synchronous adjustment.

[0126] 14b, 15b, and 16c, the rotation lock mechanism 110a may further include a resilient reset element 113a, which is disposed between the fixed structure 114a and the lock element 111a and constantly provides a force that drives one end of the lock element 111a to extend from the fixed structure 114a, so that when the base 100a is rotated to a predetermined position (i.e., rotated to the forward use position or the rear use position) and the unlocking device is not operated, the lock element 111a is always inserted into the positioning hole 201a to achieve engagement. The resilient reset element 113a may be, for example, a compression spring, but the present disclosure is not limited thereto.

[0127] With the above structure, when the child car seat 1a is in the forward-facing position, one end of the locking element 111a continues to extend from the fixing structure 114a due to the action of the elastic reset element 113a, extends from the housing of the seat 100a, and engages with the front positioning hole 2011a of the base 200a, thereby locking the seat 100a to the base 200a and preventing it from rotating any further. When it is necessary to switch the child car seat 1a from the forward-facing position to the rearward-facing position, the traction element 112a is driven by the operation of the unlocking device, and the pulling force of the traction element 112a pulls the protruding end of the locking element 112a into the fixing structure 114a, allowing the seat 100a to rotate to the rearward-facing position relative to the base 200a. During rotation, the positional limit of the inner housing of the base 200a relative to the locking element 111a keeps the locking element 111a in a retracted state until it reaches the position of the rear positioning hole 2012a. The action of the elastic reset element 113a causes the locking element 111a to extend from the fixed structure 114a and engage with the rear positioning hole 2012a, thereby locking the base 100a in the rear use position. In other embodiments, the locking element 111a may be held in a retracted state during rotation of the base 100a relative to the base 200a by other means (e.g., a retention mechanism of the unlocking device, a retention mechanism of the locking element, cooperation between the unlocking device and an elastic element disposed on the locking element, etc.) after the unlocking device is operated. As shown in FIG. 14c, this prevents the locking element 111a from extending deep enough into the positioning hole 201a of the base 200a for engagement.

[0128] To indicate the locked state of the seat 100a relative to the base 200a, the child car seat of the present disclosure further includes a rotation lock indicating mechanism 120a.

[0129] 17A to 20 show a rotation lock indication mechanism according to an embodiment of the present disclosure.

[0130] 17A to 20, in one embodiment of the present disclosure, the rotation lock indicating mechanism 120a is disposed on the base 100a of the child car seat and connected to the rotation lock mechanism 110a for locking the base 100a to the base 200a, thereby indicating whether the base 100a is disposed in a predetermined position relative to the base 200a. For example, the rotation lock indicating mechanism 120a may be disposed on the front side of the base 100a, on both sides of the front of the base 100a, or on armrests on both sides of the base 100a, and the present disclosure is not limited thereto. Preferably, two rotation lock indicating mechanisms 120a are provided, one on each side of the base 100a.

[0131] Specifically, the rotation lock indicating mechanism 120a includes an unlock operation element 121a, an unlock traction element 122a, and a status indicator 124a. The unlock operation element 121a is slidably connected to the base 100a and is configured to be switched between a first position (the position shown in FIG. 17b) and a second position (the position shown in FIG. 18b) to release the lock of the base 100a relative to the base 200a. Preferably, the unlock operation element 121a may be an unlock button that is invertedly disposed on one of two side surfaces of the base 100a and can be moved from the first position to the second position by being pressed substantially vertically, where the first position means that the unlock button is in a downward position, and the second position means that the unlock button is pressed upward to be in an upward position.

[0132] In other embodiments, the unlocking operating element may also be disposed on the base and may be movable in the front-to-back or left-to-right directions relative to the base, or the unlocking operating element may also be disposed on the base.

[0133] One end of the unlocking traction element 122a is connected to the unlocking operation element 121a, and the other end of the unlocking traction element 122a is connected to the rotation locking mechanism 110a, specifically, to the locking element 111a of the rotation locking mechanism 110a. For example, the unlocking traction element 122a may be an unlocking steel wire, but the present disclosure is not limited thereto. In the illustrated embodiment, the unlocking traction element 122a and the traction element 112a of the rotation locking mechanism 110a are integrated.

[0134] In one embodiment, the status indicator 124a is disposed at least on the unlocking operating element 121a and indicates a rotationally locked state of the base 100a relative to the base 200a. When the base 100a is locked to the base 200a by the rotation locking mechanism 110a, the unlocking operating element 121a is in a first position under the action of the unlocking traction element 122a, and the status indicator 124a indicates the first state. When the unlocking operating element 121a is operated to move from the first position to the second position, the unlocking operating element 121a drives the unlocking traction element 122a to unlock the base 100a, and the status indicator 124a indicates the second state.

[0135] In one embodiment, the status indicator 124a includes a first indicating element 1241a. As shown in Figures 17a and 19, the first indicating element 1241a is provided on the outer surface of the unlocking operation element 121a. When the seat 100a is locked to the base 200a, the unlocking operation element 121a is held in the first position by the unlocking traction element 122a, and the first indicating element 1241a is exposed, as shown in Figure 17a.

[0136] For example, if the unlock operation element 121a is an unlock button, the first indicating element 1241a may be arranged on an upper edge of the unlock button corresponding to the pressing direction of the unlock button, that is, as long as the first indicating element 1241a can be exposed when the base 100a is locked to the base 200a. As another example, the unlock button may be arranged in an opening provided in a housing of the base 100a (e.g., the lower cover 101a), and a receiving portion for receiving the pressed unlock button may also be arranged on the housing of the base 100a to place the unlock button therein. The first indicating element 1241a may be arranged on the unlock button near a position where the unlock button is connected to and cooperates with the housing of the seat 100a (i.e., on the unlock button and near the receiving portion of the housing of the seat 100a). When the unlock button is pressed, the unlock button is at least partially pressed into the receiving portion, and the first indicating element 1241a is then pressed into the receiving portion and shielded by the housing of the seat.

[0137] Furthermore, the first indicator element 1241a may be a protrusion or recess provided on the outer surface of the unlocking operation element 121a, may be formed integrally with the unlocking operation element 121a, or may be designed to match the shape of the opening in the lower cover 101a of the base 100a. Also, the first indicator element 1241a may be green pad-printed or may have other colors and shapes, and the present disclosure is not limited thereto.

[0138] Furthermore, the status indicator 124a may further include a second indicator element 1242a. As shown in FIGS. 17b and 20, the second indicator element 1242a is provided on the outer surface of the base 100a (e.g., the lower cover 101a), and may also be provided on the outer surface of the unlocking operation element. When the base 100a is locked to the base 200a, the first indicator element 1241a is exposed, but the second indicator element 1242a is hidden by the unlocking operation element 121a. When the unlocking operation element 121a is operated to the second position, as shown in FIG. 18a, the first indicator element 1241a is hidden by the base 100a, and the second indicator element 1242a is exposed.

[0139] For example, if the unlock operation element 121a is an unlock button, the second indicating element 1242a may be provided at the lower end of the unlock button corresponding to the pressing direction of the unlock button, or at a position corresponding to the unlock button on the lower cover 101a of the base 100a, for example, on the lower inner surface of an opening (for accommodating the unlock button) in the lower cover 101a.

[0140] Furthermore, the second indicator element 1242a may be a protrusion or recess disposed on the outer surface of the lower cover 101a, may be integrally formed with the lower cover 101a, or may be designed to match the shape of the unlock button. Also, the first indicator element 1241a may be pad-printed in red, or may have other colors or shapes, and the present disclosure is not limited thereto.

[0141] If the status indicator 124a includes both the first indicator element 1241a and the second indicator element 1242a, the first indicator element 1241a and the second indicator element 1242a may display different indicator information, such as different colors. For example, if the first indicator element 1241a is a green pad print to indicate that the seat 100a is locked to the base 200a, the second indicator element 1242a may have a significantly different color from the first indicator element 1241a, such as a red pad print, to remind the user of the status switch.

[0142] In another embodiment, the status indicator 124a may be provided only on the seat 100a (e.g., the lower cover 101a). For example, the status indicator 124a may include only a second indicator element 1242a provided on the lower cover 101a, which is covered when the seat 100a is locked to the base 200a and is exposed when the lock between the seat 100a and the base 200a is released, to indicate the current status of the child car seat to the user.

[0143] That is, the state indicator 124a of the present disclosure can be provided on at least one of the unlocking operation element 121a and the seat 100a (such as the lower cover 102a).

[0144] 17b and 18b, the rotation lock indicating mechanism 120a further includes an unlocking elastic reset element 123a. One end of the unlocking elastic reset element 123a is connected to the base 100a, and the other end of the unlocking elastic reset element 123a is connected to the unlocking operation element 121a, thereby providing a force for driving the unlocking operation element 121a to the second position, thereby pulling the unlocking traction element 122a so as to tend to move away from the rotation lock mechanism 110a, i.e., pulling the locking element 111a of the rotation lock mechanism 110a. The force that the unlock elastic reset element 123a exerts on the unlock operation element 121a and therefore the unlock traction element 122a is smaller than the locking force provided by the rotation lock mechanism 110a (i.e., the lock element 111a). That is, the force exerted by the unlock elastic reset element 123a on the unlock operation element 121a and therefore the unlock traction element 122a is smaller than the force of the rotation lock mechanism 110a pulling the unlock traction element 122a because one end of the lock element 111a is kept protruding from the fixed structure 114a under the action of the elastic reset element 113a when the child seat 1a is in the forward-facing or rearward-facing position. For example, the unlock elastic reset element 123a is a tension spring, one end of which is fixedly disposed on the unlock operation element 121a by a screw (i.e., the end can move together with the unlock operation element 121a), and the other end of which is fixed (i.e., immovable) relative to the seat 100a.

[0145] For ease of understanding, the following description will be given taking as an example a case where the unlock operation element 121a is an unlock button and the unlock elastic reset element 123 is a tension spring. With reference to Figures 14b, 17a, 17b, and 19, the unlock button is inverted and arranged on the base 100a. When the base 100a is locked to the base 200a, the lock element 111a of the rotation lock mechanism 110a is inserted into the front positioning hole 2011a (or the rear positioning hole 2012a) under the action of the elastic reset element 113a, and the unlock traction element 122a is pulled, restricting the unlock button downward to the first position (i.e., the unlock button is in the downward position). Because the tension force of the tension spring is smaller than the tension force of the unlocking traction element 122a, the tension spring extends, and the unlocking button is then positioned in a lower position to shield the second indicating element 1242a and expose the first indicating element 1241a located on the upper part of the outer surface of the unlocking button, thereby indicating that the seat 100a is locked to the base 200a. When the base 100a needs to be rotated, the unlocking button is pressed down to move it upward relative to the lower cover 101a, pulling the unlocking traction element 122a upward and withdrawing the locking element 111a from the front positioning hole 2011a (or the rear positioning hole 2012a). When the seat 100a is rotated away from the forward use position or the rear use position relative to the base 200a, the locking element 111a at the other end of the unlocking traction element 122a is held by the inner surface of the base 200a and maintained in a retracted state. At the same time, when the unlock button is released, the tension force of the tension spring is greater than the tension force of the unlock traction element 122a, so the unlock button moves to the second position (located in the upper position) under the contraction force of the tension spring, and the unlock button can be located in the second position. In this state, the first indicator element 1241a arranged on the outer surface of the unlock button is, for example, hidden and shielded by the lower cover 101a, and the second indicator element 1242a arranged on the lower cover 101a is exposed, thereby indicating that the seat 100a is unlocked to rotate relative to the base 200a.Therefore, the rotation lock indicating mechanism 120a of the present disclosure can indicate whether the base 100a is locked to the base 200a by displaying or hiding two indicating elements according to the up and down movement of the unlock button. Of course, as described above, only one of the first indicating element 1241a and the second indicating element 1242a may be provided. For example, if only the first indicating element 1241a is disposed on the outer surface of the unlock button, the exposed state of the first indicating element 1241a indicates that the seat is locked to the base, and the blocked state of the first indicating element 1241a indicates that the seat is unlocked.

[0146] Furthermore, as shown in Figures 17b and 18b, the rotation lock indication mechanism 120a may further include a fixed element 125a fixedly connected to the base 100a, for example by a screw 126a, and the unlock operation element 121a is slidably disposed on the fixed element 125a so as to slide between a first position and a second position relative to the base 100a.

[0147] 21a to 24 show a rotation lock indicator mechanism in another embodiment of the present disclosure.

[0148] In another embodiment of the present disclosure, the status indicator may include an indication window and an indicator element disposed on the rear side of the indication window, with one of the indication window and the indicator element being fixedly disposed on the base 100a, and the other being disposed on an unlock operation element 121a such as an unlock button. For example, as shown in FIGS. 21A to 24, the status indicator 124a includes a first indicator element 1241a, a second indicator element 1242a, an indication window 1243a, and an indicator bar 1244a, with the first indicator element 1241a, the second indicator element 1242a, and the indicator bar 1244a constituting the above-mentioned indicator elements. The indicator bar 1244a may be fixedly disposed on the base 100a by means of bolting, welding, adhesive, or the like, or may be fixedly disposed on a fixing element 125a fixedly connected to the base 100a. As shown in the figure, the indicator bar 1244a is integrally formed with the base 100a (or the fixed element 125a). The first indicator element 1241a and the second indicator element 1242a are arranged on the indicator bar 1244a along the movement direction (e.g., the up-down direction) of the unlocking operation element 121a, and the indicator window 1243a is arranged on the unlocking operation element 121a. In this embodiment, the indicator bar 1244a is inserted into the unlocking operation element 121a, and the unlocking operation element 121a can move relative to the fixed element 125a and further relative to the indicator bar 1244a. When the unlocking operation element 121a is in the first position, the indicator window 1243a exposes the first indicator element 1241a, and when the unlocking operation element 121a is moved to the second position, the indicator window 1243a exposes the second indicator element 1242a, and the first indicator element 1241a and the second indicator element 1242a display different indicator information. For example, the first indicator element 1241a is displayed in green, and the second indicator element 1242a is displayed in red, indicating different states of the seat 100a.

[0149] In the following explanation, for ease of understanding, the unlock operation element 121a will be used as an example again. When the seat 100a is locked to the base 200a, the unlock operation element 121a (unlock button) is located at a first position (i.e., the unlock button is located at a lower position), and the indication window 1243a on the unlock operation element 121a shows the first indication element 1241a (located above the second indication element 1242a) on the indication bar 1244a. When the unlock operation element 121a (unlock button) is located at a second position (i.e., the unlock button is located at an upper position), the indication window 1243a on the unlock operation element 121a shows the second indication element 1242a on the indication bar 1244a. Thus, by changing the position of the unlock button in the up or down direction, indication elements with different information (e.g., different colors) can be realized and the status of the seat 100a relative to the base 200a can be indicated.

[0150] The rotation lock indicator mechanism 120a of the present disclosure allows the user to intuitively and clearly know from the outside of the child car seat 100a whether the seat 100a is in place and locked to the base 200a, allowing the user to determine whether the child car seat is being used safely, thereby providing a better user experience and improving usage safety. Furthermore, the status indicator 124a is located at least on the unlock operation element 121a and indicates different statuses, thereby simplifying the overall structure of the seat 100a, reducing manufacturing and processing costs, optimizing the assembly process, and making operation more convenient.

[0151] According to some embodiments, the present disclosure provides a rotation lock indicator mechanism that can indicate the rotation lock status of a child car seat.

[0152] According to some embodiments, the present disclosure provides a rotation lock indicator mechanism with simple structure, convenient operation, and high safety in use.

[0153] According to some embodiments, the present disclosure provides a child car seat that allows a user to clearly know whether the child car seat is rotatably positioned in a predetermined position. The present disclosure has at least one of the following beneficial effects:

[0154] The child car seat of the present disclosure can prevent the seat from being accidentally rotated. In particular, the child car seat of the present disclosure requires an additional operation to allow the seat to be rotated from a rear-facing position to a forward-facing position, and does not prevent the seat from being rotated normally from a forward-facing position to a rear-facing position. The additional operation can be conveniently performed from either the left or right side of the child car seat. The child car seat's anti-misoperation mechanism has a simple structure and is highly reliable, and the locking element of the anti-misoperation mechanism has high mobility and is resistant to shaking.

[0155] In the present disclosure, the support legs are provided to have at least an unfolded position and a folded position, so that when the vehicle child car seat is in use, the child car seat is well supported by the support legs and prevents the child car seat from tipping over, and when not in use, the support legs can be folded under the base for easy storage, while at the same time reducing the volume of the child car seat and reducing transportation costs. Furthermore, by providing extendable sliding elements on the base and pivotally connecting the support legs to the sliding elements so that they can extend and contract together with the sliding elements, not only is the attachment of the support legs easy, but the support legs can also be well pivotally connected and extended and contracted in accordance with the extension and contraction of the sliding elements. Therefore, when the support legs are not in use, the sliding elements can be retracted to the bottom of the base, shortening the length by which the sliding body protrudes from the front end of the base or preventing the sliding body from protruding from the base. As a result, the child's feet are not affected, improving riding comfort, further reducing the volume of the child car seat, and reducing transportation costs. Furthermore, a traction element is provided that tightens when the support legs rotate and fold, forming an inward reaction force that causes the support legs to synchronously retract inward, i.e., retract in the direction closer to the base, so that the user does not need to push the support legs to retract them after they are folded, thereby achieving complete folding, simplifying user operation, making operation simple and convenient, providing a good user experience and high satisfaction, differentiating the product from existing products, and significantly improving the market competitiveness of the product.

[0156] Since the traction element is provided as a flexible element, the traction element has a certain flexibility and bending flexibility, which is convenient for the winding deformation of the traction element. In this way, the support legs are well retracted inward when folded, and the retraction effect of the support legs, i.e., the retraction effect of the sliding element, can be ensured. When the user needs to fold the support legs, the present disclosure provides a simple and easy operation, greatly improving the user's usability.

[0157] The flexible element is provided as a steel wire, which not only ensures the strength of the traction element to avoid breakage due to pulling, but also improves durability, ensures good flexibility and bending, and generates good inward reaction force when the support legs are rotated and folded, allowing the support legs to retract inward. Alternatively, the flexible element can be provided as a string or woven tape, which allows the support legs to retract inward when they are rotated and folded, i.e., the support legs can be retracted inward synchronously when they are rotated and folded, simplifying user operation and reducing the overall cost of the child car seat due to the low material cost of the string or woven tape.

[0158] The driving element is configured to rotate together with the support leg, so that when the support leg rotates and folds, the traction element generates a good reaction force, i.e., the driving element generates a certain rolling motion on the traction element, which better pulls the support leg inward and allows the support leg to be fully folded. In this way, the sliding element does not protrude too much from the front end of the base, which would affect the riding comfort of the child, improving the usability of the child car seat and reducing the volume of the child car seat during transportation, thereby reducing transportation costs.

[0159] The drive element is provided on the support leg to facilitate the drive element to rotate together with the support leg, and the drive element is integrated with the support leg and functions as a part of the support leg, ensuring the strength and durability of the drive element and extending its service life. Optionally, the drive element and the support leg may be formed separately and connected and fixed via a fixing structure, which facilitates the arrangement of the structure and position of the drive element without being restricted by the arrangement of the structure and position of the drive element and provides more flexible structural design.

[0160] The driving element is provided at the upper end of the support leg, so that when the support leg is rotated and folded, the support leg can be rotated and retracted at a small angle, which not only saves the force applied when the support leg is rotated and folded, but also shortens the length of the traction element, thereby reducing material costs and overall manufacturing costs.

[0161] The driving element is boss-shaped and has an arc portion cooperating with the traction element, so that when the support legs are rotated and folded, the driving element can form a better rolling effect on the traction element, and the traction element can form a larger inward reaction force to pull the support legs inward, ensuring the retraction effect of the support legs, i.e., the retraction effect of the sliding element. Optionally, the driving element can be shaped as a pulley or a cylinder, so that the driving element can form a better rolling effect on the traction element, and the traction element can generate a sufficient reaction force to retract the support legs, thereby achieving a good retraction effect.

[0162] The first end of the traction element is fixedly connected to the base, and the second end of the connecting element is fixedly connected to the driving element, so that one end of the traction element is fixedly disposed and the other end is movably disposed, so that when the support leg rotates, the other end of the traction element is rolled and tightened by the driving element, and when the traction element is urged to rotate outward by the driving element, a reaction force is generated to pull the support leg to retract inward, thereby enabling the support leg to retract synchronously when rotated and folded, so that the traction element is stably and reliably stressed and not easily damaged, and the support leg can be rotated and retracted at a small angle. Optionally, the second end of the traction element may be directly fixed to the upper end of the support leg, so that when the support leg rotates and folds, the support leg directly drives the traction element, and the traction element is tightened under the action of the driving element to generate a reaction force, realizing the support leg to retract synchronously when rotated and folded.

[0163] The fixing post is placed on the base, and the first end of the traction element is fixed to the base by the cooperation of the fastener and the fixing post. This fixing method is simple, reliable, and not easy to loosen, ensuring the function and effectiveness of the traction element.

[0164] A stroke amplification mechanism is provided, a first end of which is connected to the base, and a second end of which is connected to the support leg via a traction element, so that when the support leg rotates to fold, the traction element is driven to drive the stroke amplification mechanism, which then drives the support leg to retract inward, so that the support leg retracts inward synchronously when folded, which is convenient to operate and extends the length of the support leg to retract inward, thereby meeting better usage conditions.

[0165] The diamond-shaped telescopic frame not only provides good telescoping effect to ensure the retraction effect of the support legs, but also allows for large telescopic changes in the diamond-shaped frame, i.e., it can be extended to a longer length and contracted to a shorter length, which can better expand the stroke and particularly improve the retraction effect of the support legs. At the same time, it has sufficient strength and is not likely to deform or loosen when the support legs are pulled. Secondly, the diamond-shaped telescopic frame has a simple structure, which is convenient for production and assembly and improves production and assembly efficiency. Specifically, the diamond-shaped telescopic frame is composed of multiple diamond-shaped structures, each of which is hinged at its midpoint and includes multiple sets of two-piece connecting rod assemblies connected to each other, ensuring the effectiveness of the diamond-shaped telescopic frame and facilitating its production and assembly.

[0166] The fixed frame is provided to facilitate secure fixation between the stroke amplification mechanism and the base, and to ensure stability and reliability when the stroke amplification mechanism is extended or retracted.

[0167] According to the child car seat of the present disclosure, when the support legs are rotated and folded, the traction elements are tightened to form an inward reaction force, and the support legs are retracted inward synchronously, thereby providing simple and convenient operation and saving volume.

[0168] The safety seat is provided with a sliding element and the support legs are pivotally connected to the sliding element, allowing the support legs to be unfolded or folded as the sliding element is extended or retracted. This allows the safety seat to achieve good safety when unfolded and compact size when folded in both use modes. In the first use mode, the seat is rearwardly positioned and the support legs are unfolded, or the seat is forwardly positioned and the support legs are unfolded. In the second use mode (i.e., booster mode), the seat is forwardly positioned and the support legs are folded. In the first use mode, the seat can be used rearwardly with the support legs unfolded or forwardly with the support legs unfolded. More specifically, the use mode in which the seat is used rearwardly with the support legs unfolded is suitable for children under 15 months of age and / or 0-105 cm tall. The use mode in which the seat is used forwardly with the support legs unfolded is suitable for children 15 months of age or older and / or 76-105 cm tall, i.e., the toddler mode. In the second use mode (booster mode), the seat must be moved forward and the support legs folded before use. This mode is suitable for children between 100cm and 150cm tall.

[0169] In the first mode of use, the support legs are extended and retracted to adjust the ground position of the support legs after deployment, ensuring the proper position of the upper ends of the support legs supported by the base, providing good support for the safety seat and effectively preventing the safety seat from tipping over, ensuring safety when the safety seat is in use. At the same time, there is sufficient space in the rear seats of the vehicle, and the sufficient front-to-rear space provides good cushioning when the vehicle is hit, providing good protection for the child, and providing ample space for convenient installation of the safety seat, making it easy for the child to get in and out. Furthermore, in the second mode of use, that is, when the support legs are not needed, they can be folded and hidden under the base, and then attached to the vehicle seat for use by older children. Considering that older children are generally taller than infants and require more space, the present disclosure not only increases the space in the rear seats of a vehicle to accommodate older children, but also provides sufficient front and rear space to provide better cushioning when the vehicle is impacted, providing better protection for older children. At the same time, it also provides space for older children to place their feet, improving the riding comfort of the safety seat and ensuring the safety and stability of older children when the safety seat is used by older children. The support legs can be hidden when not in use, reducing the overall size of the safety seat and its packaging volume, thereby reducing transportation costs. Furthermore, the overall size of the safety seat can be changed by extending or retracting the sliding elements, i.e., the support legs. Because the size of the rear seat space varies depending on the type of vehicle, the present disclosure can be adapted to different types of vehicles, significantly improving the applicability of the safety seat. At the same time, this safety seat can realize two use modes, namely, a use mode for infants and a use mode for the elderly, that is, a multi-function seat, which greatly improves the application range of the safety seat, allowing users to achieve multiple functions with just one safety seat, greatly reducing the user's use cost, providing more attractiveness to users, differentiating the product, and greatly enhancing the product's market competitiveness.

[0170] Compared with the prior art, the rotation lock indicator mechanism provided by the present disclosure has a state indicator at least on the unlocking operating element, which indicates a first state and a second state when the unlocking operating element is in a first position and a second position, respectively, thereby providing the user with information on whether the child car seat is positioned in a predetermined position and locked to the base, thereby providing the user with a better usage experience. At the same time, the rotation lock indicator mechanism of the present disclosure can also prevent safety risks caused by the child car seat not being locked in a predetermined position, thereby improving usage safety. Furthermore, the rotation lock indicator mechanism has the advantages of a simple structure, convenient operation, low cost, convenient production, processing, and assembly, and further reduced maintenance costs.

[0171] Although relative terms such as "above" and "below" are used herein to describe the relative relationship between one component and another in the figures, these terms are used for convenience only, e.g., according to the orientation of the embodiments depicted in the figures. If the illustrated device were turned upside down, it would be understood that a component described as being "above" another component would become a component described as being "below" the other component. Other relative terms, such as "above," "below," "left," and "right," have similar meanings. When a structure is "on" other structure(s), it can mean that the structure is integrally formed on the other structure(s), that the structure is "directly" disposed on the other structure(s), or that the structure is "indirectly" disposed on the other structure(s) via the other structure(s).

[0172] In this specification, the terms "a", "one", "said", "above" and "at least" are used to denote the presence of one or more elements / components / or the like.

[0173] The terms "comprising," "comprising," and "having" are intended to be inclusive and mean that there may be additional elements / components / or the like other than the listed elements / components / or the like. The terms "first," "second," and "third" are used merely as labels and do not numerically limit the objects.

[0174] Unless otherwise defined, all terms, including technical and scientific terms, used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Furthermore, it should be understood that terms should be interpreted as having a meaning consistent with the meaning in the context of the relevant art, and should not be interpreted as an idealized or overly formal meaning unless expressly defined herein.

[0175] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure disclosed herein. This application generally covers any variations, uses, or adaptations of the present disclosure in accordance with the principles of the disclosure, and is intended to include such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and embodiments be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0176] Although the present disclosure has been described with reference to exemplary embodiments, the terms used are illustrative rather than limiting. Because the present disclosure can be embodied in various forms without departing from the spirit and essence of the disclosure, the above-described embodiments should not be limited to the details set forth above, but should be interpreted as broadly as possible within the scope defined by the claims, and therefore, it should be understood that all changes that come within the scope of the claims or their equivalents should be covered by the claims.

Claims

1. A child car seat including a base, a seat, and a misuse prevention mechanism, the seat is rotatably disposed on the base and has a forward-facing state and a rearward-facing state relative to the base; the misuse prevention mechanism includes a limiting groove disposed on the seat and a locking element disposed on the base; the locking element engages the limiting groove to prevent the seat from rotating from the rearward-facing position to the forward-facing position; The locking element includes a limiting structure for limiting movement of the locking element relative to the seat. A child seat characterized by the above.

2. The misuse prevention mechanism includes two of the locking elements and two operating elements corresponding to the two locking elements, respectively, and the two locking elements are arranged symmetrically.

2. The child car seat according to claim 1.

3. One of the two actuating elements operates to prevent a corresponding one of the locking elements from engaging the limiting groove, thereby permitting the seat to rotate in one direction from the rearward-facing position to the forward-facing position.

3. The child car seat according to claim 2.

4. The child car seat further includes a rotating base, the rotating base being formed in an annular shape and including the limiting groove, two guide inclined surfaces, and an avoidance groove, the two guide inclined surfaces being disposed on both sides of the limiting groove, and both ends of the avoidance groove being connected to the outer sides of the two guide inclined surfaces, respectively.

4. The child car seat according to claim 1, wherein the child car seat is a seat for a child.

5. One end of the locking element has a limiting linear surface and an inclined surface; the locking element engages with the limiting groove via the limiting linear surface to prevent the seat from rotating from the rearward-facing state to the forward-facing state; The inclined surface cooperates with one of the two guide inclined surfaces to guide the locking element into the limiting groove while the seat rotates from the rearward-facing position to the forward-facing position.

5. The child car seat according to claim 4.

6. The restriction structure includes a first restriction structure and a second restriction structure, the first restriction structure including a first restriction hole and a first restriction element, and the second restriction structure including a second restriction hole and a second restriction element.

6. The child car seat according to claim 1, wherein the child car seat is a seat for a child.

7. The first limiting element and the second limiting element pass through the first limiting hole and the second limiting hole, respectively, and are fixed to the base, so that the locking element can move along only one direction.

7. A child car seat according to claim 6.

8. The child car seat further includes a restoring element, and both ends of the restoring element abut against the first restricting hole and the first restricting element, respectively, thereby constantly applying a pressing force that moves the locking element toward the rotating base.

8. A child car seat according to claim 7.

9. The first limiting hole and the second limiting hole are both elongated holes, the extending directions of the first limiting hole and the second limiting hole coincide with the one direction, and the first limiting element and the second limiting element are both screws.

9. A child car seat according to claim 7 or 8.

10. A rotation operation element is provided on each side of the seat to rotate the seat relative to the base.

10. The child car seat according to claim 1, wherein the child car seat is a seat for a child.

11. The child car seat further includes a support leg, a sliding element, and a traction element; The sliding element is telescopically disposed on the base, and the support leg is pivotally connected to the sliding element and telescopically extends and retracts together with the sliding element; The traction element rotates the support leg from an extended position to a folded position and pulls the support leg toward the base.

11. The child car seat according to claim 1.

12. The traction element is a flexible element.

12. The child car seat according to claim 11.

13. The child seat further includes a stroke amplification mechanism having a first end connected to the base and a second end connected to the support leg via the traction element.

13. A child car seat according to claim 12.

14. The seat is rotatably disposed on the base and has at least a forward-facing position and a rearward-facing position, and the child car seat has a first use mode in which the sliding element is extended and the support legs are unfolded to form ground support portions, and a second use mode in which the sliding element is retracted and the support legs are folded into the bottom of the base.

14. A child car seat according to claim 12 or 13.

15. a rotation lock indicator mechanism for indicating whether a seat of a rotatable child car seat is positioned relative to a base, the mechanism comprising: the rotation lock instruction mechanism is disposed on the seat of the child car seat and is connected to a rotation lock mechanism for locking the seat to the base; the rotation lock indicating mechanism includes an unlocking operation element, an unlocking traction element, and a status indicator; the unlocking operating element is slidably connected to the seat and is switchable between a first position and a second position; one end of the unlocking traction element is connected to the unlocking operation element, and the other end is connected to the rotation lock mechanism; the state indicator is disposed at least on the unlock operation element and indicates a rotation lock state of the seat relative to the base; When the seat is locked to the base via the rotation lock mechanism, the unlocking operating element is positioned at the first position by the action of the unlocking traction element, and the state indicator indicates the first state; When the unlock operating element is operated to move from the first position to the second position, the unlock operating element drives the unlock traction element to unlock the seat, and the state indicator indicates the second state. A rotation lock indication mechanism characterized by:

16. The unlocking operation element is an unlocking button, and the unlocking button is movable from the first position to the second position by being pressed in a substantially vertical direction.

16. The rotation lock indicator mechanism of claim 15.

17. The rotation lock indication mechanism further includes an unlocking elastic reset element; One end of the unlocking elastic reset element is connected to the seat, and the other end is connected to the unlocking operation element, and the unlocking elastic reset element is configured to provide a force to drive the unlocking operation element to the second position, thereby pulling the unlocking traction element so as to tend to move away from the rotation locking mechanism.

17. A rotation lock indicator mechanism according to claim 15 or 16.

18. The unlocking elastic reset element is a tension spring.

18. The rotation lock indicator mechanism of claim 17.

19. When the seat is locked, the force applied to the unlocking operating element by the unlocking elastic reset element, and therefore to the unlocking traction element, is less than the locking force provided by the rotation locking mechanism.

20. The rotation lock indicator mechanism of claim 18.

20. the state indicator includes a first indicator element; the first indicating element is disposed on an outer surface of the unlocking operation element; When the seat is locked to the base, the unlocking operating element is held in the first position by the unlocking traction element, and the first indicating element is exposed. The rotation lock indication mechanism according to any one of claims 15 to 19.

21. the state indicator further includes a second indicator element; the second indicator element is disposed on an outer surface of the sheet; When the seat is locked to the base, the unlocking operating element shields the second indicating element; When the unlocking operation element is operated to the second position, the first indicating element is covered by the sheet and the second indicating element is exposed; The first instruction element and the second instruction element display different instruction information.

21. The rotation lock indicator mechanism of claim 20.

22. the rotation lock indicator mechanism further includes a locking element; The fixing element is fixedly connected to the seat, and the unlocking operating element is slidably disposed on the fixing element so as to slide between the first position and the second position relative to the seat. The rotation lock indication mechanism according to any one of claims 15 to 21.

23. the status indicator includes a first indicator element, a second indicator element, an indicator window, and an indicator bar; the instruction bar is fixedly disposed on the fixed element, the first instruction element and the second instruction element are sequentially disposed on the instruction bar in a vertical direction, and the instruction window is disposed on the unlock operation element; When the unlocking operation element is located at the first position, the indication window exposes the first indication element, and when the unlocking operation element is located at the second position, the indication window exposes the second indication element; The first instruction element and the second instruction element display different instruction information.

23. The rotation lock indicator mechanism of claim 22.

24. The indicator bar is integrally formed with the fixed element, and the first indicator element and the second indicator element have different colors.

24. The rotation lock indicator mechanism of claim 23.

25. The unlocking traction element is an unlocking steel wire The rotation lock indication mechanism according to any one of claims 15 to 24.

26. The rotation lock mechanism is disposed on the seat and is engageable with a locating hole on the base. The rotation lock indication mechanism according to any one of claims 15 to 25.

27. The positioning holes include a front positioning hole and a rear positioning hole, When the seat is in a forward-facing position, the rotation lock mechanism engages with the front locating hole, and when the seat is in a rearward-facing position, the rotation lock mechanism engages with the rear locating hole.

27. The rotation lock indicator mechanism of claim 26.

28. the rotation locking mechanism includes a fixing structure, a locking element, and a traction element; the securing structure is fixedly disposed on the seat and has an open end; the locking element is disposed on the fixed structure, the locking element is slidable within the fixed structure, and one end of the locking element is configured to extend from the open end of the fixed structure to engage with the positioning hole; One end of the traction element is connected to the other end of the locking element, and the other end is connected to the unlocking operation element of the rotation lock indication mechanism, When one end of the locking element extends from the fixed structure and engages with the positioning hole, the unlocking operation element is in the first position due to the action of the traction element, and when the unlocking operation element is operated to move from the first position to the second position, the locking element retracts into the fixed structure via the traction element. The rotation lock indicating mechanism according to any one of claims 23 to 27.

29. the rotation lock mechanism further includes a resilient reset element; The elastic reset element is disposed between the fixing structure and the locking element, and constantly provides a force that drives one end of the locking element to extend from the fixing structure.

29. The rotation lock indicator mechanism of claim 28.

30. The traction element and the unlocking traction element are integrated together.

30. A rotation lock indicator mechanism according to claim 28 or 29.

31. a rotation lock indicator mechanism for indicating whether a seat of a rotatable child car seat is positioned relative to a base, the mechanism comprising: the rotation lock indicator mechanism is disposed on the seat and connected to a rotation lock mechanism for locking the seat to the base; the rotation lock indicating mechanism includes an unlocking operation element, an unlocking traction element, and a status indicator; the unlocking operating element is slidably connected to the seat and is switchable between a first position and a second position; one end of the unlocking traction element is connected to the unlocking operation element, and the other end is connected to the rotation lock mechanism; the status indicator indicates a rotation lock status of the seat relative to the base; When the seat is locked to the base by the rotation lock mechanism, the unlocking operation element is located at the first position and the status indicator is exposed; When the unlock operating element is operated to move from the first position to the second position, the unlock operating element drives the unlock traction element to unlock the seat, and the status indicator is shielded. A rotation lock indication mechanism characterized by:

32. the state indicator includes a first indicator element; the first indicating element is disposed on the unlocking operation element and is exposed when the seat is locked to the base; When the lock between the seat and the base is released, the first indicating element is shielded by the seat as the unlocking operation element moves.

32. The rotation lock indicator mechanism of claim 31 .

33. the state indicator further includes a second indicator element; the second indicating element is disposed on the seat or the unlocking operation element, and is shielded by the unlocking operation element when the seat is locked to the base; When the lock between the seat and the base is released, the second indicating element is exposed as the unlocking operation element moves.

33. A rotation lock indicator mechanism according to claim 31 or 32.

34. A child car seat including a seat, a base, and a rotation lock indicator mechanism, The seat is disposed on a base, The rotation lock instruction mechanism is a rotation lock instruction mechanism according to any one of claims 15 to 33, and is disposed on a side of the seat. A child seat characterized by the above.

35. two rotation lock indication mechanisms are provided, the two rotation lock indication mechanisms being respectively disposed on two side surfaces of the seat; the traction elements of the rotation lock mechanism include a first traction element and a second traction element; one end of the first traction element is connected to the locking element, and the other end is connected to the unlocking operation element of one of the two rotation lock indicating mechanisms; One end of the second traction element is connected to the locking element, and the other end is connected to the unlocking operation element of the other of the two rotation lock indicating mechanisms.

35. A child car seat according to claim 34.

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