Patent Description:
Currently, child safety seats on the market are typically equipped with a single-headed connector core on either side of an independent base for locking into the ISOFIX interface of a motor vehicle seat. In addition, the independent base is equipped with a mechanism that allows the seat body to engage or rotate in two directions to adjust the seat body forward and backward. With such a structural design, the child safety seat tends to be relatively large in volume and weight. Since the base and the seat body are two separate components, it is not easy to carry and transport when moving from place to place, making it very cumbersome and resulting in a poor user experience. Therefore, the child safety seat with such a design structure cannot meet the needs of users who require lightweight and mobility.

To address the issue of bi-directional installation without an independent base, the current industry solution is to design the connector core as an elongated double-headed structure that is installed directly on the underbody of the seat body, allowing the base to lock in both forward and backward directions with the vehicle's ISOFIX interface. However, this design still has shortcomings. To meet safety regulations, the connector core is typically made of a steel structure. Doubling the length of the connector core directly doubles the weight. Although the base is eliminated, the weight is not reduced.

Besides, existing technology adopts such a solution: a rotation point is placed in the center of the base, allowing the connector cores to rotate <NUM>° to switch directions forward and backward to connect with the ISOFIX sockets on the car seat. However, a simple rotation causes the standard eccentric notch of the connector cores to rotate in the opposite direction, meaning that a simple <NUM>° rotation of the connector cores results in a non-safety compliant connection notch head that is not allowed by safety standards and cannot lock into the vehicle's ISOFIX interface. The <CIT> shows a child safety seat with reversible ISOFIX connectors, comprising a seat body and ISOFIX connection assemblies, wherein one end of the ISOFIX connection assembly is a free end having an eccentric notch for connecting with the ISOFIX sockets of a car seat, wherein the other end of the ISOFIX connection assembly is a rotating connection end that is flippable and connected to the underbody center of the seat body and can be flipped forward or backward.

To address the above technical issues, the present invention is proposed.

The technical problem to be solved by the present invention is to provide a child safety seat with reversible ISOFIX connectors. Each side of a seat body is equipped with a single ISOFIX connection assembly, which can be flipped forward or backward relative to the seat body, and the direction of the eccentric notch is adjustable during the flipping process by a self-rotating linkage assembly. This feature allows the ISOFIX connection assembly to easily reverse the direction change, and after the direction change, the eccentric notch can be adjusted to a safety-compliant angle and connected to the ISOFIX sockets on the car seat. In addition, since the seat body employs a single ISOFIX connection assembly on both sides, the total weight of the child safety seat is relatively light without disassembly, making it easy to carry and transport.

To solve the above technical problem, the present invention provides the child safety seat with reversible ISOFIX connectors comprising a seat body and ISOFIX connection assemblies. One end of the ISOFIX connection assembly is a free end having an eccentric notch for connecting with the ISOFIX sockets of the car seat. The other end is a rotating connection end that can be flipped and connected to the underbody center of the seat body and can be flipped forward or backward. Between the rotating connection end of the ISOFIX connection assembly and the seat body, there is a self-rotating linkage assembly that drives the ISOFIX connection assembly to self-rotate along its longitudinal axis to adjust the eccentric notch during the flipping process. A locking assembly is provided between the ISOFIX connection assembly and the underbody of the seat body to lock the ISOFIX connection assembly when it is flipped and self-rotates to a preset position. The self-rotating linkage assembly includes a gear connected with the ISOFIX connection assembly and a gear rack fixedly attached to the underbody of the seat body, where the gear can mesh with the gear rack, enabling the ISOFIX connection assembly to self-rotate along its longitudinal axis during the flipping process. The underbody of the seat body is equipped with a connection shaft, and the self-rotating linkage assembly further comprises a flipping joint connected with the connection shaft, where the flipping joint is rotatably connected with the rotating connection end of the ISOFIX connection assembly.

Preferably, the rotating connection end of the ISOFIX connection assembly is equipped with a screw connection, and the flipping joint is provided with a threaded connection hole that mates with the screw connection, allowing the ISOFIX connection assembly to self-rotate relative to the flipping joint during the flipping process. The flipping joint is rotatably connected and moved synchronously with the connection shaft to enable the ISOFIX connection assemblies located on both sides of the seat body underbody to flip forward or backward in synchronism.

Preferably, the ISOFIX connection assembly consists of a housing and a connector core that is telescopically adjustable within the housing with the eccentric notch located at the free end of the connector core. The ISOFIX connection assembly further includes locking adjustment buttons located on both sides of the housing to adjust the telescopic movement of the connector core relative to the housing. The underbody of the seat body is provided with a groove to accommodate the ISOFIX connection assembly, and the side of the groove on the underbody of the seat body is provided with a clearance space to avoid interference with the movement of the locking adjustment button.

Preferably, the underbody of the seat body, on the side of the locking assembly, is further provided with a stop-lock linkage assembly. This assembly is used to brake and lock the movement of the locking assembly when the locking assembly is unlocked, and when the ISOFIX connection assembly is flipped and self-rotates to the preset position, it can trigger the locking assembly to lock the ISOFIX connection assembly. The locking assembly includes a lock hole provided at the free end of the ISOFIX connection assembly, respective locking members that can be inserted into or withdrawn from the lock hole provided at the underbody front and rear sides of the seat body, and an unlocking button provided on the seat body for driving the locking members.

Preferably, the locking assembly further includes an elastic member for elastically pressing the locking member. The stop-lock linkage assembly comprises a flat spring that moves and connects with the locking member together and a triggering member that can elastically extend from the underbody of the seat body to trigger the locking members when the ISOFIX connection assembly is flipped and self-rotates to the preset position. The flat spring has a curved catch portion, and the triggering member is provided with a hook that engages the catch portion when the locking member is slid out of the lock hole by operating the unlocking button. The outer end of the triggering member is provided with a guiding structure so that when the outer end of the triggering member is pushed by the ISOFIX connection assembly, the hook pushes the flat spring to deform, causing the hook to disengage from the catch portion and then the locking member to elastically insert into the lock hole.

Preferably, the outer end of the locking member is provided with a color indicator A, and the seat body is also provided with a window A for observing the color indicator A after the locking member is inserted into the lock hole.

In another embodiment of the locking assembly in the present invention, the locking assembly comprises a locking rotating member, a pulling hook, a hoop member, and an elastic damping member. The center of the locking rotating member is rotatably connected with the underbody of the seat body through a pivot. The pulling hook is elastically pulled by the elastic damping member and is slidably connected to the underbody of the seat body. One end of the locking rotating member is provided with a notch for buckling the pulling hook, and the other end of the locking rotating member is eccentrically pivotally connected to the hoop member. When the notch is buckled with the pulling hook, the hoop member can be flipped to clasp the free end of the ISOFIX connection assembly to lock the ISOFIX connection assembly. An arm of force applied to the notch by the pulling hook is greater than an arm of force applied to the locking rotating member by the hoop member.

Preferably, the sliding end of the pulling hook is provided with a color indicator B, and the seat body is provided with a window B for observing the color indicator B after the hoop member clasps on the free end of the ISOFIX connection assembly and locks the ISOFIX connection assembly.

As a further improved solution of the locking assembly in the present invention, the locking assembly comprises a lock hole provided on the ISOFIX connection assembly, respective locking members provided on the front and rear sides of the seat body underbody to mate with the lock hole, and an unlocking button provided on the seat body to drive the locking member to move along its axial direction. The locking assembly on the front side of the underbody of the seat body further comprises a connection shaft sleeve rotatably connected to the corresponding locking member, and a supporting rod connected to the corresponding locking member, which can rotate and flip around the locking member relative to the seat body. The connection shaft sleeve is also axially connected and moved synchronously with the corresponding locking member. The other end of the two supporting rods is equipped with a lock pin that is inserted into the lock hole on the front side of the underbody of the seat body when the ISOFIX connection assembly is rotated to the preset angle. The unlocking button on the front of the seat body underbody is connected with the connection shaft sleeve to drive the connection shaft sleeve to push the corresponding locking member to move axially and unlock. The side of the seat body underbody where the locking assembly is located is also equipped with a stop-lock linkage assembly that can trigger the locking assembly to lock the ISOFIX connection assembly after unlocking.

Preferably, the stop-lock linkage assembly at the rear side of the seat body underbody comprises a flat spring that moves in concert with the corresponding locking member, and a triggering member that can elastically extend from the seat body underbody to trigger the locking member when the ISOFIX connection assembly is flipped and self-rotates to the preset position. The flat spring has a curved catch portion, and the triggering member is provided with a hook that engages the catch portion when the unlocking button is operated to cause the locking member to slide out of the lock hole. The outer end of the triggering member has a guiding structure; the stop-lock linkage assembly at the front side of the seat body underbody comprises a flat spring connected and moved synchronously with the connection shaft sleeve, and a triggering member that can elastically extend from the seat body underbody to trigger the locking member when the ISOFIX connection assembly is flipped and self-rotates to the preset position in the groove. The flat spring also has a curved catch portion, and the triggering member thereon is provided with a hook that engages with the catch portion when the unlocking button is operated to drive the connection shaft sleeve to push the locking member inwardly and out of the lock hole, wherein the outer end of the triggering member has a guiding structure.

Preferably, at least on the front side of the seat body underbody, there is a triggering button, and each triggering button is connected and moved synchronously with the triggering member to indirectly or directly trigger the locking member for locking.

Preferably, the other end of the two supporting rods is connected with a crossbar, and a guide sleeve is slidably connected between the inner ends of the two crossbars. Inside the guide sleeve, a pushing spring is provided to press the inner ends of the two crossbars at both ends thereof.

Compared to the prior art, the child safety seat with reversible ISOFIX connectors of the present invention has the following advantages:.

Specific embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings, wherein:.

The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in <FIG>, the present invention includes a child safety seat with a reversible ISOFIX connector comprising a seat body <NUM> and ISOFIX connection assembles <NUM>. One end of the ISOFIX connection assembly <NUM> is a free end having an eccentric notch <NUM> for connection with the ISOFIX socket of a car seat. The other end is a rotating connection end that can be flipped and connected to the underbody center of the seat body <NUM> and can be flipped forward or backward. Between the rotating connection end of the ISOFIX connection assembly <NUM> and the seat body <NUM>, there is a self-rotating linkage assembly <NUM> that drives the ISOFIX connection assembly <NUM> to self-rotate along its longitudinal axis to adjust the eccentric notch <NUM> during the flipping process. A locking assembly <NUM> is provided between the part of the ISOFIX connection assembly <NUM> away from the rotating connection end and the underbody of the seat body <NUM> to lock the ISOFIX connection assembly <NUM> when it is flipped and self-rotates to a preset position. With this technical solution, the ISOFIX connection assembly can be conveniently rotated and the eccentric notch can be adjusted to comply with the safety regulations for connecting to the ISOFIX socket on the car seat, while at the same time allowing the child safety seat to be light and portable without disassembly.

As shown in <FIG>, <FIG> and <FIG>, the self-rotating linkage assembly <NUM> includes a gear <NUM> that moves in concert with the ISOFIX connection assembly <NUM> and a gear rack <NUM> that is fixed to the underbody of the seat body <NUM>. The gear <NUM> is a bevel gear, and the teeth on the gear rack <NUM> are distributed in a sector shape so that the gear <NUM> can mesh with the gear rack <NUM>. The number of teeth on the gear <NUM> and the gear rack <NUM> is the same, ensuring that the ISOFIX connection assembly self-rotates exactly <NUM>° when flipped, aligning the eccentric notch with the ISOFIX socket on the car seat. Alternatively, if the number of teeth on the gear rack <NUM> is an odd multiple of the number of teeth on the gear <NUM>, the ISOFIX connection will rotate the odd multiple of <NUM>° during flipping, which also aligns the eccentric notch <NUM> with the ISOFIX socket of the car seat. This satisfies the requirement for reversible connection of the seat body and the user's need to change directions, ensuring a safe and reliable connection.

As shown in <FIG>, to ensure a stable and reliable meshing transmission between gear <NUM> and gear rack <NUM>, a block <NUM> is provided opposite gear rack <NUM> on the underbody of seat body <NUM>. The block <NUM> abuts the gear <NUM> when it meshes with the gear rack <NUM>, thereby forming a gap for the gear <NUM> to pass through.

As shown in <FIG> and <FIG>, the underbody of the seat body <NUM> is equipped with a connection shaft <NUM>, and the self-rotating linkage assembly <NUM> further includes a flip joint <NUM> connected to the connection shaft <NUM>. The flip joint <NUM> is rotatably connected to the rotating connection end of the ISOFIX connection assembly <NUM>. This rotating connection can be a pivot rotation connection or a threaded rotation connection. When the threaded rotation connection is used, the rotating connection end of the ISOFIX connection assembly <NUM> has a screw connection <NUM> that is fixedly connected to a housing <NUM> of the ISOFIX connection assembly <NUM>, and the flip joint <NUM> has a threaded connection hole <NUM> that mates with the screw connection <NUM>, allowing the ISOFIX connection assembly <NUM> to self-rotate relative to the flip joint <NUM> during flipping.

To achieve synchronous flipping of the ISOFIX connection assemblies on both sides of the seat body <NUM>, the connection shaft <NUM> is connected and moved synchronously with the flip joint <NUM>. When the ISOFIX connection assembly <NUM> flips forward or backward, the threaded connection hole <NUM> of the flip joint <NUM> engages with the screw connection <NUM> of the ISOFIX connection assembly <NUM>, allowing the ISOFIX connection assembly <NUM> to self-rotate correspondingly, screwing in or out, while the screw connection <NUM> always maintains a significant number of threads connected with the threaded connection hole <NUM> to ensure connection strength.

As shown in <FIG>, the ISOFIX connection assembly <NUM> consists of a housing <NUM> and a connector core <NUM> that is telescopically adjustable within the housing <NUM> with the eccentric notch <NUM> located at the outer end of the connector core <NUM>. The ISOFIX connection assembly <NUM> further includes locking adjustment buttons <NUM> located on both sides of the housing <NUM> to adjust the telescopic movement of the connector core <NUM> relative to the housing <NUM>. The structure of the connector core <NUM> is disclosed in <CIT>. The difference in the ISOFIX connection assembly <NUM> of the present invention is that the locking adjustment buttons <NUM> are formed on both sides of the same connector core <NUM>. The two locking adjustment buttons <NUM> on the same connector core <NUM> are connected so as to move in unison; regardless of which one is operated, it can slidably adjust and lock the connector core <NUM> relative to the housing <NUM>.

As shown in <FIG>, <FIG>, <FIG>, and <FIG>, the underbody of the seat body <NUM> is provided with a groove <NUM> to accommodate the ISOFIX connection assembly <NUM>, and the side of the groove <NUM> on the underbody of the seat body <NUM> is provided with a clearance space <NUM> to avoid interference with the movement of the locking adjustment button <NUM>. After the ISOFIX connection assembly <NUM> completes flipping and self-rotating, it is fully embedded in the groove <NUM>, making the structure compact. The clearance space <NUM> includes a clearance notch near the connection shaft <NUM> and a slot extending from the clearance notch in the direction of the front and rear sides of the seat body. When the ISOFIX connection assembly <NUM> is flipped, the locking adjustment button <NUM> should be set to the position of the clearance notch beforehand, otherwise, interference will prevent unlocking and flipping.

As shown in <FIG>, the underbody of the seat body <NUM>, on the side of the locking assembly <NUM>, is further provided with a stop-lock linkage assembly <NUM>. This assembly is used to brake and lock the movement of the locking assembly <NUM> when the locking assembly <NUM> is unlocked, and when the ISOFIX connection assembly <NUM> flips and self-rotates to the preset position, it can trigger the locking assembly <NUM> to lock the ISOFIX connection assembly <NUM>. Thus, when the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position, i.e., when the ISOFIX connection assembly <NUM> is already embedded in the groove <NUM>, it can be automatically locked without additional user operation, making the operation more convenient.

The locking assembly <NUM> includes a lock hole <NUM> provided at the free end of the ISOFIX connection assembly <NUM>, respective locking members <NUM> that can be inserted into or withdrawn from the lock hole <NUM> provided at the underbody front and rear sides of the seat body <NUM>, and an unlocking button <NUM> provided on the seat body <NUM> for driving the locking members <NUM>. The lock hole <NUM> is provided on the housing <NUM>, specifically, as shown in <FIG>, U-shaped connecting ears <NUM> are provided on the housing <NUM>, and the lock holes <NUM> are provided on both sides of the connecting ears <NUM>. The locking assembly <NUM> also includes elastic members <NUM> for elastically pressing the locking members <NUM>. Both ends of the elastic member <NUM> elastically abut both locking members <NUM>, respectively.

In an embodiment of the present invention, the unlocking button <NUM> is connected and moved synchronously with the locking member <NUM> to slide the locking member along its axial direction. When the user operates the unlocking button <NUM> to overcome the spring force of the elastic member <NUM>, the unlocking button <NUM> drives the locking members <NUM> to slide axially and disengage from the lock hole <NUM>, thereby unlocking the ISOFIX connection assembly <NUM>.

As shown in <FIG> and <FIG>, the stop-lock linkage assembly <NUM> includes a flat spring <NUM> connected and moved synchronously with the locking member <NUM> and a triggering member <NUM> that can elastically extend at one end from the underbody of the seat body <NUM> to trigger the locking members when the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position. The flat spring <NUM> has a curved catch portion <NUM>, and the triggering member <NUM> is provided with a hook <NUM>. When the unlocking button <NUM> is operated to drive the locking member <NUM> to slide axially and disengage from the lock hole <NUM>, the catch portion <NUM> that is connected with the locking member <NUM> is moved with the locking member <NUM>, and when the catch portion <NUM> elastically engages with the hook <NUM>, the locking member <NUM> is unlocked and retracted to prevented sliding out.

As shown in <FIG>, the triggering member <NUM> has an outer end equipped with a guiding structure <NUM>. To facilitate cooperation with the guiding structure <NUM>, regardless of whether the ISOFIX connection assembly <NUM> is flipped to the front or rear side at the underbody of the seat body <NUM>, corresponding guiding inclined surfaces <NUM> are provided on both sides of the connecting ear <NUM>. When the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position, the guiding inclined surface <NUM> contacts the guiding structure <NUM>, causing the triggering member <NUM> to elastically retract and, in turn, driving the hook <NUM> to slide inward together. The hook <NUM> then presses against the flat spring <NUM>, causing it to elastically deform until the hook <NUM> disengages from the catch portion <NUM>. At this moment, as shown in <FIG>, after the locking member <NUM> is released from the locking limit, it is elastically inserted into the lock hole <NUM> under the action of the elastic member <NUM>.

To further enhance usability and to ensure that the ISOFIX connection assembly is reliably locked, the outer end of the locking member <NUM> has a color indicator A421 that can be marked green as needed. The seat body <NUM> is also provided with a window A13 through which the color indicator A421 can be observed after the locking member <NUM> is inserted into the lock hole <NUM>.

As shown in <FIG>, in another embodiment of the locking assembly <NUM> of the present invention, the locking assembly <NUM> comprises a rotary member <NUM>, a pulling hook <NUM>, and a hoop member <NUM>. The center of the rotary member <NUM> is pivotally connected to the front or rear side of the underbody of the seat body <NUM> by a pivot <NUM>. The pulling hook <NUM> can slide elastically on the underbody of the seat body <NUM>. One end of the rotary member <NUM> has a notch <NUM> for engagement with the pulling hook <NUM>, and the other end of the rotary member <NUM> is eccentrically pivotally connected to the hoop member <NUM>. The locking assembly <NUM> further includes an elastic damping member <NUM> disposed on the seat body <NUM> to elastically resist the pulling hook <NUM> being pulled by the rotary member <NUM>. When the notch <NUM> engages with the pulling hook <NUM>, the hoop member <NUM> is flipped, allowing it to clasp the free end of the ISOFIX connection assembly <NUM>, thereby locking it. To ensure that the locking is secure and reliable, the lever principle is adopted where an arm of force of the notch <NUM> applied to the pulling hook <NUM> is greater than an arm of force of the hoop member <NUM> applied to the rotary member <NUM>.

Similarly, to further enhance usability and to ensure that the ISOFIX connection assembly is reliably locked, the sliding end of the pulling hook <NUM> has a color indicator B462, and the seat body <NUM> has a window B14 that allows the color indicator B462 to be observed after the hoop member <NUM> clasps the free end of the ISOFIX connection assembly <NUM>.

As shown in <FIG>, in another specific embodiment of the present invention, the locking assembly <NUM> includes a lock hole <NUM> provided on the ISOFIX connection assembly <NUM>, respective locking members <NUM> that mate with the lock holes <NUM> provided on the underbody front and rear sides of the seat body <NUM>, and an unlocking button <NUM> provided on the seat body <NUM> for driving the locking members <NUM> along their axial movement. Similarly, the inner ends of two locking members <NUM> located on the same front or rear side of the underbody of the seat body <NUM> are elastically pressed against each other by an elastic member <NUM>; and the locking assembly <NUM> on the front side of the underbody of the seat body <NUM> also includes a connecting shaft sleeve <NUM> rotatably connected to the corresponding locking member <NUM>, and a supporting rod <NUM> connected to the locking member <NUM>, which can be folded and flipped relative to the seat body <NUM>. The connecting shaft sleeve <NUM> is axially connected and moved synchronously with the corresponding locking member <NUM>, and the other end of the two supporting rods <NUM> has a lock pin <NUM> for insertion into the lock hole <NUM> when the ISOFIX connection assembly <NUM> is flipped to the front side of the underbody of the seat body <NUM> at the preset angle. The unlocking button <NUM> on the front side of the underbody of the seat body <NUM> is connected to the connecting shaft sleeve <NUM> to drive it and push the corresponding locking member <NUM> along its axial movement to unlock. Multiple sets of lock holes <NUM> can be set on the housing <NUM> of the ISOFIX connection assembly <NUM> according to the required adjustment angle, allowing the user to choose according to their needs, and the seat body <NUM> can thus obtain different inclination angles, increasing practicality.

In use, as shown in <FIG>, firstly, the ISOFIX connection assembly <NUM> is unlocked, flipped, and self-rotated from the rear side to the front side of the underbody of the seat body <NUM> to a preset position required to obtain the desired angle of the seat body <NUM>, then the supporting rod <NUM> is flipped, and the locking member <NUM> rotates within the connecting shaft sleeve <NUM> as the supporting rod <NUM> is flipped. When the supporting rod flips, the lock pin <NUM> is aligned with the lock hole <NUM> for insertion, and it can be inserted accordingly.

To ensure that the two supporting rods <NUM> are flipped synchronously and that the two lock pins <NUM> have enough elastic expansion space. The other end of the two supporting rods <NUM> is connected with a crossbar <NUM>, and a guide sleeve <NUM> is slidably connected between the inner ends of the two crossbars <NUM>. Inside the guide sleeve <NUM>, a pushing springs <NUM> is provided to press the inner ends of the two crossbars <NUM> at both ends thereof. In the present invention, the lock pin <NUM> is formed by extending out from the crossbar <NUM>. At the same time, as shown in <FIG>, a limit protrusion <NUM> is provided on the crossbar <NUM> to limit the retraction of the two crossbars <NUM> into the guide sleeve <NUM>, ensuring that when the supporting rods <NUM> are driven to move toward each other and are unlocked by the locking member <NUM>, the two lock pins <NUM> can be correspondingly smoothly released from the lock hole <NUM>.

As shown in <FIG>, the underbody of the seat body <NUM> has a slot <NUM> for accommodating the supporting rod <NUM>. When the ISOFIX connection assembly <NUM> is unlocked and flipped to the front side of the underbody of the seat body <NUM> and there is no need to adjust the inclination of the seat body <NUM>, the supporting rod <NUM> and the crossbar <NUM> are clipped into the slot <NUM>. As shown in <FIG>, when the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position within the groove <NUM>, the locking member <NUM> can be inserted into the lock hole <NUM>.

As shown in <FIG> and <FIG>, the underbody of the seat body <NUM> on the side of the locking assembly <NUM> is also provided with a stop-lock linkage assembly <NUM> which is used to brake the movement of the locking assembly <NUM> after unlocking, and when the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position within the groove <NUM>, triggering the locking assembly <NUM> to lock the ISOFIX connection assembly <NUM>. The stop-lock linkage assembly <NUM> at the rear side of the underbody of the seat body <NUM> includes a flat spring <NUM> that moves in concert with the corresponding locking member <NUM>, and a triggering member <NUM> that can elastically extend at one end from the underbody of the seat body <NUM> to trigger the locking member <NUM> when the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position within the groove <NUM>. The flat spring <NUM> has a curved catch portion <NUM>, and the triggering member <NUM> is provided with a hook <NUM> which engages with the catch portion <NUM> when the unlocking button <NUM> is operated to drive the locking member <NUM> to slide out of the lock hole <NUM>. The outer end of the triggering member <NUM> is provided with a guiding structure <NUM>. When the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position in the groove <NUM>, the guiding inclined surface <NUM> on the connecting ear <NUM> then pushes against the guiding structure <NUM>, causing the hook <NUM> on the triggering member <NUM> to squeeze the catch portion <NUM> on the flat spring <NUM> and producing an elastic deformation until the catch portion <NUM> disengages from the hook <NUM>. In this way, the locking member <NUM> automatically locks the ISOFIX connection assembly <NUM> by inserting into the lock hole <NUM> under the action of the elastic member <NUM>.

As shown in <FIG> and <FIG>, the stop-lock linkage assembly <NUM> located at the underbody front side of the seat body <NUM> comprises a flat spring <NUM> connected and moved synchronously with the connecting shaft sleeve <NUM>, and a triggering member <NUM> that can elastically extend at one end from the underbody of the seat body <NUM> for triggering the locking member <NUM> when the ISOFIX connection assembly <NUM> is flipped and self-rotates to the preset position within the groove <NUM>. The flat spring <NUM> has a curved catch portion <NUM>, and the triggering member <NUM> is provided with a hook <NUM> designed to engage and cooperate with the catch portion <NUM>. When the unlocking button <NUM> is operated to drive the connecting shaft sleeve <NUM> to press against the locking member <NUM>, overcoming the elastic force of the elastic member <NUM> and causing it to retract and disengage from the lock hole <NUM>, the catch portion <NUM> elastically slides along with the locking member <NUM> and engages with the hook <NUM>, thereby immobilizing the locking member <NUM>. The outer end of the triggering member <NUM> is provided with a guiding structure <NUM>.

To ensure safe and reliable use, at least the front side of the underbody of the seat body <NUM> is provided with a triggering button <NUM>. Each triggering button <NUM> is connected and moved synchronously with the triggering member <NUM>, enabling the locking action of the locking member <NUM> to be triggered indirectly or directly by driving the triggering member <NUM>. When the seat body <NUM> does not require an inclination adjustment, and the ISOFIX connection assembly <NUM> is flipped into the groove <NUM>, the locking member <NUM> can be automatically inserted into the lock hole <NUM> by pressing the triggering member <NUM>. If the ISOFIX connection assembly <NUM> is flipped into the groove <NUM> without the above result, the user can manually insert the locking member <NUM> into the lock hole <NUM> by operating the triggering button <NUM>.

For the seat body <NUM> requiring the inclination adjustment and when the ISOFIX connection assembly <NUM> is flipped to an appropriate position at the front underbody of the seat body <NUM>, releasing the supporting rod <NUM> allows it to rotate and align the lock pin <NUM> with the corresponding lock hole <NUM>. The user can then insert the lock pin <NUM> into the lock hole <NUM> to achieve the inclination adjustment and locking by operating the triggering button <NUM>.

Claim 1:
A child safety seat with reversible ISOFIX connectors, comprising a seat body (<NUM>) and ISOFIX connection assemblies (<NUM>), wherein one end of the ISOFIX connection assembly (<NUM>) is a free end having an eccentric notch (<NUM>) for connecting with the ISOFIX sockets of a car seat, wherein the other end of the ISOFIX connection assembly (<NUM>) is a rotating connection end that is flippable and connected to the underbody center of the seat body (<NUM>) and can be flipped forward or backward; a self-rotating linkage assembly (<NUM>) is installed between the rotating connection end of the ISOFIX connection assembly (<NUM>) and the seat body (<NUM>) to drive the ISOFIX connection assembly (<NUM>) to self-rotate along its longitudinal axis to adjust the eccentric notch (<NUM>) during the flipping process; a locking assembly (<NUM>) is provided between the ISOFIX connection assembly (<NUM>) and the underbody of the seat body (<NUM>) to lock the ISOFIX connection assembly (<NUM>) when the ISOFIX connection assembly (<NUM>) is flipped and self-rotates to a preset position; the self-rotating linkage assembly includes a gear (<NUM>) connected with the ISOFIX connection assembly (<NUM>) and a gear rack (<NUM>) fixedly attached to the underbody of the seat body (<NUM>), wherein the gear (<NUM>) meshes with the gear rack (<NUM>), enabling the ISOFIX connection assembly (<NUM>) to self-rotate along its longitudinal axis during the flipping process; the underbody of the seat body (<NUM>) is equipped with a connection shaft (<NUM>), and the self-rotating linkage assembly (<NUM>) further comprises a flipping joint (<NUM>) connected with the connection shaft (<NUM>), wherein the flipping joint (<NUM>) is rotatably connected with the rotating connection end of the ISOFIX connection assembly (<NUM>).