Child safety seat

Abstract

A child safety seat according to the present application comprising: a base; a supporting foot assembly, which is pivotally connected to the base and includes a supporting foot that can be switched between a supporting position and a folding position relative to the base; a movable mechanism, which is movably arranged on the base; a locking and unlocking mechanism, comprising a locking member and an unlocking member that are movably set on the base, the locking member and the unlocking member are connected to each other, the locking member is configured to lock the movable mechanism, and the unlocking member is configured to release the locking of the movable mechanism by the locking member; a first anti-misuse mechanism, which is configured to prevent the unlocking member from moving when the supporting foot is in the folding position, thereby preventing the movable mechanism from moving relative to the base; and to release the obstruction to the movement of the unlocking member to allow the unlocking member to move when the supporting foot is in the supporting position, so that the movable mechanism can move relative to the base.

Description

CHILD SAFETY SEATTECHNICAL FIELD

[0001] The present application relates to a child safety seat comprising an anti-misuse structure.BACKGROUND

[0002] A child safety seat is typically installed in vehicles such as cars to provide a safe and comfortable riding environment for children. In order to stably install a child safety seat in a car, the child safety seat usually includes a base and a seat connected to the base, wherein the base is for installing to the car and the seat is for children to ride on. The seat can usually be adjusted in position relative to the base, for example, it can rotate between a forward position facing the front of the vehicle and a backward position facing the rear of the vehicle, and can also be adjusted in front and back position or pitch angle relative to the base. The base is generally stably connected to the car seat through the joint action of the ISOFIX and a supporting foot. The ISOFIX, also known as a standard fastener, for example, is engaged to the connector located at the junction of the seat and backrest of the car seat. The supporting foot extending from the base is usually supported by the floor of the car to prevent the child safety seat from tipping over.

[0003] For the convenience of users in handling, the supporting foot can usually be folded to the bottom of the base when not in use. However, due to this folding function, users may forget to switch the supporting foot to the supporting position when installing the child safety seat onto the car, causing the base to be installed unstably and posing a safety hazard.

[0004] Therefore, it is necessary to provide a child safety seat to solve the aforementioned issues.SUMMARY

[0005] A child safety seat according to the present application comprising: a base; a supporting foot assembly, which is pivotally connected to the base and includes a supportingfoot that can be switched between a supporting position and a folding position relative to the base; a movable mechanism, which is movably arranged on the base; a locking and unlocking mechanism, comprising a locking member and an unlocking member that are movably set on the base, the locking member) and the unlocking member are connected to each other, the locking member is configured to lock the movable mechanism, and the unlocking member is configured to release the locking of the movable mechanism by the locking member; a first anti-misuse mechanism, which is configured to prevent the unlocking member from moving when the supporting foot is in the folding position, thereby preventing the movable mechanism from moving relative to the base; and to release the obstruction to the movement of the unlocking member to allow the unlocking member to move when the supporting foot is in the supporting position, so that the movable mechanism can move relative to the base.

[0006] In one embodiment, the movable mechanism has multiple adjustment positions, the locking member is configured to lock the movable mechanism in one of the adjustment positions, the unlocking member can be moved to an unlocking position to release the locking of the movable mechanism by the locking member in the adjustment position, and the unlocking member can further be moved to a locking position to drive the locking member to lock the movable mechanism in any one of the adjustment positions, when the supporting foot is in the folding position, the first anti-misuse mechanism prevents the unlocking member from moving from the locking position to the unlocking position.

[0007] In one embodiment, the first anti-misuse mechanism comprises: a positioning member that can be engaged to the supporting foot assembly and the unlocking member, when the supporting foot is in the folding position, the positioning member abuts against the unlocking member to prevent the unlocking member from moving, and when the supporting foot is in the supporting position, the positioning member disengages from the unlocking member to allow the unlocking member to move.

[0008] In one embodiment, the positioning member comprises: a first end and a second end; and a middle portion, which is located between the first end and the second end, and is pivotally connected to the base; wherein when the supporting foot is in the folding position, the first end abuts against the unlocking member to prevent the unlocking member from moving, and when the supporting foot is in the supporting position, the supporting footassembly abuts against the second end to cause the positioning member to rotate, causing the first end to disengage from the unlocking member.

[0009] In one embodiment, the direction of movement of the unlocking member intersects with the direction of the movement trend of the first end under the force of the unlocking member, so that the first end prevents the unlocking member from moving.

[0010] In one embodiment, the unlocking member comprises a first wall and a second wall with intersecting extension directions, the first wall is engaged with the first end along the direction of movement of the unlocking member, so that the first end is subjected to the force of the unlocking member and has a tendency to move, the second wall is engaged with the first end, and the extension direction of the second wall intersects with the direction of the movement tendency of the first end under the force of the unlocking member, so that the first end prevents the unlocking member from moving.

[0011] In one embodiment, the first anti-misuse mechanism further comprises a first reset member, which is disposed between the base and the positioning member and biases the first end towards the direction in which the first end abuts against the unlocking member.

[0012] In one embodiment, the supporting foot assembly comprises a positioning rod, and when the supporting foot is in the supporting position, the positioning rod abuts against the second end to allow the positioning member to disengage from the unlocking member, thereby allowing the unlocking member to move.

[0013] In one embodiment, the locking and unlocking mechanism further comprises: a linkage member connected to the unlocking member and the locking member; wherein the unlocking member slides in a front-back direction to drive the linkage member to rotate around an axis extending in an up-down direction, and the linkage member drives the locking member to move in a left-right direction to selectively lock or unlock the movable mechanism.

[0014] In one embodiment, the locking and unlocking mechanism further comprises a fourth reset member, which is disposed between the locking member and the base, and the locking member is configured to lock the movable mechanism through the fourth reset member.

[0015] In one embodiment, the base is equipped with a limiting member, which includes anelastic limiting recess, and the supporting foot assembly is equipped with a positioning rod; when the supporting foot is in the folding position, the positioning rod is located in the limiting recess, and the limiting recess exerts resistance to prevent the supporting foot from leaving the folding position.

[0016] In one embodiment, the limiting recess is configured to face away from the supporting position, and both ends of the limiting recess exceed an axis of the positioning rod.

[0017] In one embodiment, the limiting member has an elastic end, and when the supporting foot is in the supporting position, the positioning rod compresses the elastic end.

[0018] In one embodiment, the base is equipped with a limiting member, and when the supporting foot is in the folding position, the limiting member abuts against the second end to prevent the positioning member from rotate due to the force applied by the unlocking member on the first end.

[0019] In one embodiment, the supporting foot is pivotally connected to the base; the unlocking member comprises a button portion exposed to the outside of the base; and when the supporting foot is in the supporting position, the button portion is located between the supporting foot and the movable mechanism.

[0020] In one embodiment, the movable mechanism is a ISOFIX, which can move relative to the base between a retracted position and at least one extended position, and is used to connect with a car seat.

[0021] In one embodiment, the ISOFIX slides relative to the base and is provided with multiple engagement holes at intervals to allow the locking member to be inserted into one of the engagement holes to lock the ISOFIX in the retracted position or the extended position.

[0022] In one embodiment, the child safety seat further comprises a second anti-misuse mechanism; when the supporting foot is in the supporting position and the ISOFIX is in the extended position, the ISOFIX disengages from the second anti-misuse mechanism, and the second anti-misuse mechanism engages with the supporting foot assembly to keep the supporting foot in the supporting position; and when the ISOFIX is in the retracted position, the ISOFIX contacts the second anti-misuse mechanism, causing the second anti-misuse mechanism to disengage from the supporting foot assembly, allowing the supporting foot toswitch between the supporting position and the folding position.

[0023] In one embodiment, the second anti-misuse mechanism comprises: an engaging member for engaging with the supporting foot assembly; a second reset member that drives the engaging member to engage with the supporting foot assembly; and a cable, one end of which is connected to the engaging member; when the ISOFIX is in the extended position and the supporting foot is in the supporting position, the engaging member is engaged with the supporting foot assembly under the action of the second reset member to keep the supporting foot in the supporting position, and when the ISOFIX is in the retracted position, the ISOFIX drives the other end of the cable, causing the cable to drive the engaging member disengage from the supporting foot assembly.

[0024] In one embodiment, the supporting foot assembly is provided with an engaging groove, and when the ISOFIX is in the extended position and the supporting foot is in the supporting position, the engaging groove corresponds to the engaging member, allowing the engaging member to be inserted into the engaging groove to lock the supporting foot assembly, and when the supporting foot is in the folding position, the engaging groove is misaligned with the engaging member.

[0025] In one embodiment, the second anti-misuse mechanism further comprises: a slider connected to the other end of the cable, when the ISOFIX is in the retracted position, it abuts against the slider to drive the slider to move and drive the cable; and a third reset member, which is set between the base and the slider, and biases the slider towards the ISOFIX.

[0026] In one embodiment, the base comprises: a slider groove that guides the movement of the slider; and a slider positioning member for preventing the slider from disengaging from the slider groove.

[0027] In one embodiment, the slider is equipped with a limit groove, and the slider positioning member can abut against the groove wall of the limit groove to limit the sliding range of the slider.

[0028] In one embodiment, the base is equipped with a guide groove, which guides the direction of movement of the engaging member.

[0029] In one embodiment, the child safety seat comprises a seat located above the base, the movable mechanism is a turntable connected to the seat, and the turntable can rotate in ahorizontal direction relative to the base; or the movable mechanism is an adjustment mechanism connected to the seat, and the adjustment mechanism can rotate in an up-down direction relative to the base; or the movable mechanism is a support member, and the support member can do telescopic movement relative to the base, the support member is used to abut against the backrest of the car seat.

[0030] In one embodiment, further comprising a second anti-misuse mechanism, wherein the second anti-misuse mechanism is configured to lock the supporting foot in the supporting position when the movable mechanism moves to one of the adjustment positions, thereby restricting the rotation of the supporting foot relative to the base, and only when the movable mechanism moves to another one of the adjustment positions, the second anti-misuse mechanism can release the lock of the supporting foot in the supporting position, allowing the supporting foot to move to the folding position.BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The embodiments of the present application will be described with exemplary drawings, in which:

[0032] Figure 1 is a side view of the base of the child safety seat according to the present application, wherein the supporting foot is in the folding position and the ISOFIX is in the retracted position;

[0033] Figure 2 is a side view of the base, wherein the supporting foot is in the supporting position and the ISOFIX is in the retracted position;

[0034] Figure 3 is a side sectional view of the base, wherein the supporting foot is in the folding position;

[0035] Figure 4 is an enlarged partial view of the box portion in Figure 3;

[0036] Figure 5 is a side sectional view of the base, wherein the supporting foot is in the supporting position;

[0037] Figure 6 is an enlarged partial view of the box portion in Figure 5;

[0038] Figure 7 is a perspective view of the base;

[0039] Figure 8 is an enlarged partial view of the box portion in Figure 7;

[0040] Figure 9 is a perspective view of the base, wherein the ISOFIX is in the retractedposition and some components of locking and unlocking mechanism have been removed to clearly show other components;

[0041] Figure 10 is an enlarged partial view of the box portion in Figure 9;

[0042] Figure 11 is a perspective view of the base, wherein the ISOFIX is in the extended position and some components of locking and unlocking mechanism have been removed to clearly show other components;

[0043] Figure 12 is an enlarged partial view of the box portion in Figure 11.List of reference numbers:1 child safety seat100 supporting foot assembly110 supporting foot120 connecting base121 engaging groove130 positioning rod200 ISOFIX210 sliding member211 engagement hole300 first anti-misuse mechanism310 positioning member311 first end312 second end313 middle portion360 first reset member340 limiting member341 elastic end342 limiting recess400 second anti-misuse mechanism420 slider421 limit groove430 engaging member440 cable450 second reset member460 third reset member500 base510 supporting foot bracket511 guide groove520 rotating shaft530 slider groove540 slider positioning member600 locking and unlocking mechanism320 unlocking member321 button portion322 unlocking groove323 unlocking recess323a side wall, first wall323b top wall, second wall324 extension portion325 linkage end330 linkage member331 first arm332 second arm333 linkage shaft350 locking member370 forth reset memberDETAILED DESCRIPTION

[0044] Although specific embodiments are refered to illustrate and describe the present invention herein, the present invention should not be limited to the details shown. More precisely, various modifications can be made to these details within the scope of the equivalent solutions of the claims and without departing from the present invention.

[0045] The descriptions of "front", "back", "up", "down" and other directions mentioned herein are only for the convenience of understanding. The present invention is not limited to these directions, but can be adjusted according to actual situations.

[0046] Referring to Figures 1 and 2, they collectively describe a base 500, a supporting foot assembly 100, a movable mechanism, a first anti-misuse mechanism 300, a second anti-misuse mechanism 400, and a locking and unlocking mechanism 600 of a child safety seat 1 according to the present application.

[0047] The supporting foot assembly 100 can rotate relative to the base 500. The supporting foot assembly 100 includes a supporting foot 110, which can rotate between a folding position (as shown in Figures 1, 3, and 4) and a supporting position (as shown in Figures 2, 5, and 6). When the supporting foot 110 is in the folding position, the supporting foot 110 is in contact with the base 500, and the angle between the two is approximately zero degrees, in order to reduce the space occupied by the supporting foot assembly 100 and the base 500 and facilitate storage. When the supporting foot 110 is in the supporting position, at least a part of the supporting foot 110 is spaced apart from the base 500, and the angle between the supporting foot 110 and the base 500 is greater than zero, so that when the base 500 abuts against the car seat, the supporting foot 110 can abut against the car foot pad, and then the base 500 stably installed on the car seat.

[0048] The movable mechanism can move relative to the base 500, and can move to multiple adjustment positions relative to the base 500.

[0049] The locking and unlocking mechanism 600 can move relative to the base 500. Specifically, the locking and unlocking mechanism 600 includes a locking member 350 and a unlocking member 320 that can move relative to the base 500. The locking member 350 is configured to lock the movable mechanism in one of multiple adjustment positions. The locking member 350 and the unlocking member 320 are interconnected, and the unlocking member 320 is configured to be operable to move between a locking position and an unlocking position. When the unlocking member 320 is in the locking position, the locking member 350 locks the movable mechanism in one of the adjustment positions. When the unlocking member 320 moves to the unlocking position, it drives the locking member 350 to move, thereby releasing the locking of the movable mechanism by the locking member 350in one of the adjustment positions.

[0050] The first anti-misuse mechanism 300 is configured to block the movement of the unlocking member 320 when the supporting foot 110 of the supporting foot assembly 100 is in the folding position, thereby blocking the movement of the unlocking member 320 to the unlocking position and blocking the movement of the locking member 350, in order to maintain the locking of the movable mechanism by the locking member 350 in one of the adjustment positions. When the supporting foot 110 is in the supporting position, the unlocking member 320 is allowed to move, which then allows the unlocking member 320 to move to the unlocking position and drives the locking member 350 to move, thereby releasing the locking of the movable mechanism by the locking member 350 in one of the adjustment positions, allowing the movable mechanism to move. At this point, it can be inferred that the unlocking member 320 can also move from the unlocking position to the locking position to once again lock the movable mechanism in one of the adjustment positions.

[0051] The second anti-misuse mechanism 400 is configured to lock the supporting foot 110 of the supporting foot assembly 100 in the supporting position when the movable mechanism moves to one of multiple adjustment positions, thereby restricting the rotation of the supporting foot assembly 100 relative to the base 500. When the movable mechanism moves to another adjustment position among multiple adjustment positions, the second anti-misuse mechanism 400 can release the lock of the supporting foot 110 in the supporting position, allowing the supporting foot 100 to move to the folding position.

[0052] Referring to Figures 1 and 2, in this embodiment, the movable mechanism is a ISOFIX 200, which can slide relative to the base 500 and move to multiple adjustment positions relative to the base 500. Specifically, multiple adjustment positions include the retracted position of the ISOFIX 200 as shown in Figure 1, where the ISOFIX 200 is almost fully retracted into the base 500, and the maximum extended position (not shown) where the ISOFIX 200 extends the maximum length from the base 500 to engage with the corresponding buckle (not shown) of the car seat. In addition, the multiple adjustment positions further include multiple extended positions between the retracted position and the maximum extended position, the length of the ISOFIX 200 protruding from the base 500 atthis time is approximately between the minimum length of the ISOFIX 200 protruding from the base 500 when the ISOFIX 200 almost fully retracted into the base 500 and the maximum length of the ISOFIX 200 extended from the base 500, so that the length of the ISOFIX 200 extending from the base 500 can be adjusted according to the actual situation. The locking member 350 is configured to lock the ISOFIX 200 in either the retracted position or any one of the extended positions.

[0053] Referring to Figures 4 and 6, in this embodiment, the first anti-misuse mechanism 300 is configured to block the movement of the unlocking member 320 when the supporting foot 110 of the supporting foot assembly 100 is in the folding position, thereby preventing the unlocking member 320 from moving to the unlocking position and preventing the locking member 350 from moving, in order to maintain the locking of the ISOFIX 200 by the locking member 350 in one of the adjustment positions, thereby restricting the movement of the ISOFIX 200. When the supporting foot 110 is in the supporting position, the unlocking member 320 is allowed to move, which then allows the unlocking member 320 to reach the unlocking position and drives the locking member 350 to move, thereby releasing the locking of the ISOFIX 200 by the locking member 350 in one of the adjustment positions, allowing the ISOFIX 200 to move and move to other adjustment positions. At this time, the unlocking member 320 can also move from the unlocking position to the locking position, allowing the locking member 350 to lock the ISOFIX 200 again in other adjustment positions.

[0054] Referring to Figures 10 and 12, in this embodiment, the second anti-misuse mechanism 400 is configured to lock the supporting foot 110 in the supporting position when the ISOFIX 200 is moved to one of the extended positions, thereby restricting the rotation of the supporting foot assembly 100 relative to the base 500. When the ISOFIX 200 is moved to the retracted position, the second anti-misuse mechanism 400 can release the lock of the supporting foot 110 in the supporting position, allowing the supporting foot 110 to move to the folding position.

[0055] For ease of illustration, the front-back direction, left-right direction, and up-down direction are defined based on the position of the base 500. However, this does not limit the installation direction of the base 500, and the front-back direction, left-right direction, and up-down direction do not have to be strictly perpendicular to each other. For ease ofillustration, the direction in which the supporting foot assembly 100 is located is referred to as the front (i.e. the left side of Figures 1 and 2), and the direction in which the ISOFIX 200 is located is referred to as the rear (i.e. the right side of Figures 1 and 2).

[0056] In this embodiment, the ISOFIX 200 slides in the front-back direction, and the ISOFIX 200 includes a sliding member 210. The side of the sliding member 210 may have multiple engagement holes 211 to allow the locking member 350 to be inserted into any of the engagement holes 211, thereby locking the sliding member 210 in the appropriate retracted position or any one of the extended positions with the ISOFIX 200. The sliding member 210 can be a hollow pipe extending in the front-back direction, but is not limited to this. The engagement hole 211 is opened on the inner side of the sliding member 210 in the left-right direction, facing the locking member 350. Multiple engagement holes 211 are arranged in the front-back direction, so that when the sliding member 210 is in the retracted position or any one of the extended positions, one of the engagement holes 211 corresponds to the position of the locking member 350, allowing the locking member 350 to be inserted into the engagement hole 211, thereby locking the sliding member 210 in the retracted position or any one of the extended positions.

[0057] Referring to Figures 3 to 6, the supporting foot assembly 100 according to the present application will be described in detail.

[0058] In this embodiment, the supporting foot 110 of the supporting foot assembly 100 is a rod-shaped component, with one end pivotally connected to the base 500, such as the front end of the base 500, and the other end being a free end that can be supported to the car floor mat. The supporting foot 110 rotates around an axis extending in the left-right direction relative to the base 500 to switch between the folding position shown in Figure 1 and the supporting position shown in Figure 2. The supporting foot 110 can be configured to change length, such as having a telescopic mechanism, to reduce the space it occupies when folded. The mechanism for changing the length of the supporting foot 110 can refer to the existing technology in the art, and its description is omitted in the present application.

[0059] In this embodiment, the supporting foot assembly 100 further includes a connecting base 120 and a positioning rod 130.

[0060] The connecting base 120 is used to connect the supporting foot 110 to the base 500.Referring to Figure 10, the connecting base 120 is a metal sheet or multiple metal sheets arranged in parallel, which is fixedly connected to the supporting foot 110 and thus rotate together with the supporting foot 110. The positioning rod 130 extends in the left-right direction and is fixedly installed to the connecting base 120, and can also rotate together with the supporting foot 110. In this embodiment, a supporting foot bracket 510 is provided at the front end of the base 500. The connecting base 120 is pivotally connected to the supporting foot bracket 510 through an shaft (not shown) extending in the left-right direction. Therefore, the supporting foot 110, positioning rod 130, and connecting base 120 can rotate together around an axis extending in the left-right direction relative to the base 500.

[0061] The first anti-misuse mechanism 300, the second anti-misuse mechanism 400, and the locking and unlocking mechanism 600 are at least partially installed in the base 500, and are roughly located between the supporting foot assembly 100 and the ISOFIX 200.

[0062] Referring to Figures 3 to 6 and Figure 8, the locking and unlocking mechanism 600 according to the present application will be described in detail.

[0063] In this embodiment, the unlocking member 320 of the locking and unlocking mechanism 600 is configured to slide relative to the base 500 in the front-back direction. The unlocking member 320 includes a button portion 321 and a unlocking groove 322. The button portion 321 is exposed on the outside of the base 500 for user operation, and the unlocking groove 322 is sleeved on the positioning component (such as the crossbar) of the base 500 to limit the sliding range of the unlocking member 320. When the supporting foot 110 is in the supporting position, the button portion 321 is located between the supporting foot assembly 100 and the ISOFIX 200, and can be moved in the front-back direction towards the supporting foot assembly 100 to the unlocking position and in the front-back direction towards the ISOFIX 200 to the locking position.

[0064] In this embodiment, the supporting foot 110 is pivotally connected to the front end of the base 500. The button portion 321 of the unlocking member 320 is set at the top of the front end of the base 500 and exposed to the outside of the base 500. When the supporting foot 110 is in the supporting position shown in Figures 5 and 6, the button portion 321 is located between the supporting foot 110 and the ISOFIX 200. More specifically, the button portion 321 is located on the rear side of the top of the supporting foot 110. In this way, whenthe user switches the supporting foot 110 to the supporting position, the user can easily operate the button portion 321 of the unlocking member 320, thereby further moving the ISOFIX 200 to the extended position.

[0065] The locking position of the unlocking member 320 is the rear position shown in Figures 3 to 6, and its unlocking position is the front position not shown in the figures. When the unlocking member 320 is not restricted by the first anti-misuse mechanism 300, the user can press the unlocking member 320 through the button portion 321 to move it from the locking position to the unlocking position. It should be understood that in other embodiments, the unlocking member 320 can also be a rotating component or a cam component, as long as it can move according to the user's operation.

[0066] The locking member 350 of the locking and unlocking mechanism 600 is rod-shaped and extends in the left-right direction, and can slide in the base 500 to insert or leave the sliding member 210. The locking member 350 is set on the base 500 and is limited to move in the left-right direction.

[0067] The locking and unlocking mechanism 600 further includes a fourth reset member 370 and a linkage member 330 connected to the unlocking member 320 and the locking member 250.

[0068] The user can drive the linkage member 330 through the unlocking member 320, which in turn drives the locking member 350 to disengage from the sliding member 210, allowing the sliding member 210 to move and thus allowing the ISOFIX 200 to move. The fourth reset member 370 is set between the base 500 and the locking member 350, and the locking member 350 is biased and inserted into the sliding member 210, so that the locking member 350 tends to remain in the position that locks the sliding member 210.

[0069] The front end of the unlocking member 320 (i.e., the lower right side in Figures 7 and 8) abuts against the first anti-misuse mechanism 300. The unlocking member 320 has an extension portion 324 that extends backwards (i.e., the upper left side in Figures 7 and 8) into the base 500, and a linkage end 325 located at the rear end of the extension portion 324, the linkage end 325 is pivotally connected to at least one linkage member 330. In this embodiment, the linkage end 325 is pivotally connected to two linkage members 330, each linkage member 330 is connected to one locking member 350, and one fourth reset member370 is provided between each locking member 350 and the base 500.

[0070] Each linkage member 330 includes a first arm 331, a second arm 332, and a linkage shaft 333. The first arm 331 extends approximately in the left-right direction, and the second arm 332 extends approximately in the front-back direction, and the first arm 331 and the second arm 332 are connected at the linkage shaft 333. The linkage shaft 333 is pivotally connected to the base 500 through, for example, a pin shaft (not shown), so that the linkage member 330 swings relative to the base 500 about an axis extending in the up-down direction.

[0071] The first arm 331 of each linkage member 330 is pivotally connected to the linkage end 325 of the unlocking member 320, and the second arm 332 is pivotally connected to the corresponding locking member 350. The locking member 350 is connected to the second arm 332 in a sliding pivot manner through, for example, a pin shaft and a groove (not shown), so that the swing of the second arm 332 is converted into the left-right movement of the locking member 350 to selectively lock or unlock the ISOFIX 200.

[0072] Referring to Figures 7 and 8, in this embodiment, two linkage members 330, two locking members 350, and two fourth reset members 370 are symmetrically arranged along the left-right directions, respectively. However, it should be understood that in other embodiments, there may be more or fewer linkage members 330, locking members 350, and fourth reset members 370.

[0073] In other embodiments, the linkage member 330 and the locking member 350 may have different forms and still be applicable to the present application. For example, the linkage member 330 can be a cam, lever, cable, slide rail, etc., as long as it can transmit the action of the unlocking member 320 to locking member 350. The locking member 350 can be a caliper, ratchet, etc., as long as it locks and unlocks the sliding member 210 according to the action of the unlocking member 320.

[0074] Referring to Figures 3 to 6 and 7, the first anti-misuse mechanism according to the present application will be described in detail. Referring to Figure 8, the first anti-misuse mechanism 300 includes a positioning member 310 and a first reset member 360.

[0075] The positioning member 310 can be engaged with the supporting foot assembly 100 and the unlocking member 320. When the supporting foot 110 is in the folding position, thepositioning member 310 engages against the unlocking member 320 and prevents the unlocking member 320 from moving to the unlocking position. When the supporting foot 110 is in the supporting position, the positioning member 310 disengages from the unlocking member 320 to allow the unlocking member 320 to move. More specifically, the positioning member 310 includes a first end 311, a second end 312, and a middle portion 313. The first end 311 and the second end 312 are opposite to each other, and the middle portion 313 is located between the first end 311 and the second end 312, and is pivotally connected to the base 500. In this embodiment, the base 500 is provided with a rotating shaft 520 extending in the left-right direction, and the middle portion 313 is pivotally connected to the base 500 through the rotating shaft 520. Specifically, the middle portion 313 is pivotally connected to the supporting foot bracket 510 of the base 500 through the rotating shaft 520.

[0076] More specifically, the first end 311 of the positioning member 310 abuts against the unlocking recess 323 of the unlocking member 320. The direction in which the unlocking member 320 moves between the locking position and the unlocking position intersects with the direction of the movement trend of the first end 311 under the force of the unlocking member 320, causing the first end 311 to prevent the unlocking member 320 from moving. For example, as shown in Figure 4, the unlocking member 320 moves in the front-back direction between the locking position and the unlocking position, and the rotation direction of the first end 311 of the positioning member 310 is an arc around the rotating shaft 520. When the user attempts to move the unlocking member 320 towards the unlocking position, they push the unlocking member 320 forward, causing the unlocking recess 323 of the unlocking member 320 to abut against the first end 311 of the positioning member 310. Therefore, the positioning member 310 is subjected to the force of the unlocking member 320 and tends to rotate counterclockwise, and the direction of counterclockwise rotation intersects with the direction of movement of the unlocking member 320, so even if the unlocking member 320 is pushed forward, it cannot drive the positioning member 310 to rotate counterclockwise to disengage from the unlocking member 320.

[0077] The unlocking member 320 includes a first wall 323a and a second wall 323b that extend in intersecting directions. The first wall abuts against the first end 311 along the direction of movement of the unlocking member 320, so that the first end 311 is subjected tothe force of the unlocking member 320 and has a tendency to move. The second wall 323b abuts against the first end 311, and the extension direction of the second wall 323b intersects with the direction of the movement trend of the first end 311 under the force of the unlocking member 320, so that the first end 311 prevents the unlocking member 320 from moving. More specifically, the unlocking recess 323 may include a side wall 323a extending in the up-down direction and a top wall 323b extending in the front-back direction. The side wall 323a and the top wall 323b are connected to each other to form a roughly rectangular accommodating space. When the first end 311 of the positioning member 310 is accommodated in the unlocking recess 323, the user pushes the unlocking member 320 forward, causing the side wall 323a to abut against the first end 311, resulting in a counterclockwise rotation trend of the first end 311 under the force of the unlocking member 320, while the top wall 323b abuts against the first end 311 to prevent the positioning member 310 from continuing to rotate in the counterclockwise direction.

[0078] The first reset member 360 is provided between the positioning member 310 and the base 500, specifically between the positioning member 310 and the supporting foot bracket 510, and is configured to bias the positioning member 310 (specifically the first end 311) towards the unlocking member 320. In this embodiment, the first reset member 360 is a torsion spring sleeved on the rotating shaft 520. In other embodiment, the first reset member 360 may also be a compression spring, elastic filling material, or the like.

[0079] When the supporting foot 110 is in the folding position, the positioning member 310 abuts against the unlocking member 320 under the action of the first reset member 360 (see Figure 8, which will be described in detail below) to prevent the unlocking member 320 from moving.

[0080] When the supporting foot 110 is in the supporting position shown in Figures 5 and 6, the supporting foot assembly 100 abuts against the second end 312. More specifically, the positioning rod 130 rotates with the supporting foot 110 to abut against the second end 312 of the positioning member 310, causing the positioning member 310 to resist the bias of the first reset member 360 and rotate in a clockwise direction, causing the first end 311 of the positioning member 310 to disengage from the unlocking recess 323 of the unlocking member 320. At this point, the user can operate the unlocking member 320 to move it in thefront-back direction to the unlocking position.

[0081] In this embodiment, the child safety seat 1 further includes a limiting member 340. The limiting member 340 is configured to prompt the user that the supporting foot 110 has been rotated to the supporting position and assist in keeping the supporting foot 110 in the folding position.

[0082] The limiting member 340 is set on the base 500, in the form of a plate extending in the front-back direction, and has an elastic end 341 and a limiting recess 342 opposite to each other in the front-back direction. Specifically, the elastic end 341 is located at the front end of the limiting member 340 and is formed in a downward concave arc-shape. The rear end of the limiting member 340 is bent downward and forward in reverse, and the lower surface of the rear end is recessed upward to form the limiting recess 342. The limiting member 340 has a certain degree of elasticity, but can provide support to keep the positioning rod 130 of the supporting foot assembly 100 at the limiting recess 342. For example, the limiting member 340 can be made of a plastic material with a certain degree of elasticity. The limiting recess 342 can be configured to face away from the supporting position, i.e. towards the rear, and both ends of the limiting recess 342 exceed an axis of the positioning rod 130. In this way, the limiting recess 342 of the limiting member 340 is sufficient to apply resistance to the positioning rod 130 to keep it in the position corresponding to the folding position of the support foot 110, thereby preventing the supporting foot 110 from accidentally disengaging from the folding position.

[0083] When the supporting foot 110 is in the folding position shown in Figures 3 and 4, the supporting foot assembly 100 (specifically the positioning rod 130) disengages from the second end 312 of the positioning member 310. At this time, the positioning rod 130 is located in the limiting recess 342 of the limiting member 340. As aforementioned, the shape and position of the limiting recess 342 of the limiting member 340 are configured to apply resistance to the positioning rod 130 to prevent the positioning rod 130from leaving the folding position with the supporting foot 110.

[0084] At the same time, the elastic end 341 of the limiting member 340 abuts against the second end 312 of the positioning member 310 to prevent the positioning member 310 from being pressed by the unlocking member 320 and rotate counterclockwise, thereby preventingthe unlocking member 320 from moving towards the unlocking position. Of course, in other embodiments, the counterclockwise rotation of the positioning member 310 can be restricted only by the elastic end 341 of the limiting member 340, or only by crossing the direction of the movement of the unlocking member 320 between the locking position and the unlocking position with the direction of the movement trend of the first end 311 under the force of the unlocking member 320. In addition, when the supporting foot 110 is in the supporting position, the positioning rod 130 compresses the elastic end 341 of the limiting member 340 to provide a signal of the support foot 110 is in the supporting position to the user.

[0085] Referring to Figures 9 to 12, the second anti-misuse mechanism 400 according to the present application is described. Overall, when the supporting foot 110 is in the supporting position and the ISOFIX 200 is in the supporting position, the second anti-misuse mechanism 400 locks the supporting foot 110 in the extended position, and when the supporting foot 110 is in the supporting position and the ISOFIX 200 is in the retracted position, the second anti-misuse mechanism 400 allows the supporting foot 110 to switch between the supporting position and the folding position. The principle is that when the supporting foot 110 is in the supporting position and the ISOFIX 200 is in the extended position, the ISOFIX 200 disengages from the second anti-misuse mechanism 400, and the second anti-misuse mechanism 400 is engaged with the supporting foot assembly 100 to keep the supporting foot 110 in the supporting position; and when the ISOFIX 200 is in the retracted position, the ISOFIX 200 contacts the second anti-misuse mechanism 400, causing the second anti-misuse mechanism 400 to detach from the supporting foot assembly 100, allowing the supporting foot 110 to switch between the supporting position and the folding position.

[0086] The second anti-misuse mechanism 400 includes a slider 420, an engaging member 430, a cable 440, a second reset member 450, and a third reset member 460.

[0087] The engaging member 430 is configured to engage or disengage from the engaging groove 121 of the supporting foot assembly 100 as the ISOFIX 200 moves, to prevent or allow rotation of the supporting foot 110. In this embodiment, the engaging groove 121 is provided on the connecting base 120 of the supporting foot assembly 100. Due to the rotation of the connecting base 120 together with the supporting foot 110 between the supporting position and the folding position, the engaging groove 121 rotates together with thesupporting foot 110, and when the supporting foot 110 is in the supporting position, the engaging groove 121 faces the engaging member 430, and the second reset member 450 biases the engaging member 430 into the engaging groove 121 of the connecting base 120. Therefore, when the supporting foot 110 is in the supporting position and the engaging member 430 is engaged with the engaging groove 121, the supporting foot 110 can be prevented from leaving the supporting position. In other implementations, the engaging groove 121 can also be provided on the supporting foot 110, as long as it rotates together with the supporting foot 110. Specifically, the second reset member 450 is a compression spring located between the engaging member 430 and the base 500, specifically between the engaging member 430 and the supporting foot bracket 510, which biases the engaging member 430 forward, i.e. in the direction of insertion into the engaging groove 121. Therefore, when the supporting foot 110 is in the supporting position, the engaging member 430 tends to lock the connecting base 120, thereby preventing the rotation of the supporting foot 110. When the supporting foot 110 is in the folding position, the engaging groove 121 is misaligned with the engaging member 430.

[0088] According to the second anti-misuse mechanism 400 of the present application, the engaging member 430 is connected to the cable 440, and the engaging member 430 is operated by the ISOFIX 200 through the cable 440. That is to say, when the ISOFIX 200 moves to the retracted position, it drives the engaging member 430 through the cable 440, so that the engaging member 430 no longer engages into the engaging groove 121. Specifically, one end of cable 440 is connected to the engaging member 430, and the other end is connected to the slider 420, allowing the slider 420 to drive the engaging member 430 through the cable 440. As mentioned earlier, the sliding member 210 can slide in the front-back direction relative to the base 500, and the slider 420 is set in the direction in which the sliding member 210 slides towards the retracted position, specifically in the front. When the sliding member 210 slides towards the retracted position, it will come into contact with the slider 420, which in turn drives the slider 420 to move. The slider 420 then drives the engaging member 430 to move through the cable 440. When the ISOFIX 200 is in the retracted position, the ISOFIX 200 abuts against the slider 420 through the sliding member 210, thereby driving the other end of the cable 440, causing cable 440 to drive theengagement member 430 to resist the action of the second reset member 450 and disengage from the engaging groove 121. At the same time, the second reset member 450 is compressed by the engaging member 430 towards the base 500 and is in a compressed state, allowing the connecting base 120 to switch between the supporting position and the folding position with the supporting foot 110. The third reset member 460 is set between the base 500 and the slider 420, and biases the slider 420 towards the direction of the ISOFIX 200. When the supporting foot 110 is in the supporting position and the ISOFIX 200 is in the extended position, the engaging groove 121 corresponds to the engaging member 430, the sliding member 210 disengages from the slider 420, the third reset member 460 drives the slider 420 to move towards the ISOFIX 200, and the slider 420 drives the engaging member 430 to move through the cable 440. At the same time, the engaging member 430 is inserted into the engaging groove 121 of the connecting base 120 under the elastic stretching force of the second reset member 450, thereby locking the connecting base 120 in the supporting position with the supporting foot 110.

[0089] It should be understood that in other embodiments, the engaging member 430 may take other forms, such as a pin, caliper, cam, etc., as long as it can be driven by the cable 440 to lock or release the connecting base 120. Correspondingly, the engaging groove 121 can also take the form of positioning hole, friction plate, protrusion, etc., in order to cooperate with the engaging member 430.

[0090] A slider groove 530 and a slider positioning member 540 are formed on the base 500. The slider groove 530 is opened in the base 500 or installed as an independent component in the base 500 to guide the movement of the slider 420 and the sliding member 210. The slider positioning member 540 is fixed to the base 500 to prevent the slider 420 from detaching from the base 500. More specifically, the slider groove 530 is a groove that extends in the front-back direction and has an open at the top, allowing the slider 420 and sliding member 210 to slide in the front-back direction within the slider groove 530. The slider positioning member 540 is a plate-shaped member extending in the left-right direction, which at least partially closes the opening of the slider groove 530 at the top, thereby forming a partially closed space together with the slider groove 530.

[0091] The slider 420 is equipped with a limit groove 421, and the slider positioningmember 540 can abut against the groove walls at both ends of the limit groove 421 to limit the sliding range of the slider 420. More specifically, the limit groove 421 is a groove formed on the top surface of the slider 420 and depressed downward. The limit groove 421 extends in the front-back direction and its size in the front-back direction is larger than that of the slider positioning member 540. The slider positioning member 540 is embedded into the limit groove 421, so when the slider 420 slides in the front-back direction, the slider positioning member 540 can abut against the groove walls at both ends of the limit groove 421 in the front-back direction to limit the sliding range of the slider 420 in the front-back direction.

[0092] The base 500 is provided with a guide groove 511, which guides the movement direction of the engaging member 430. In this embodiment, the guide groove 511 is a groove provided on the supporting foot bracket 510, which extends in the front-back direction. The engaging member 430 is inserted into the guide groove 511, so the range of forward and backward movement of the engaging member 430 is limited by the guide groove 511.

[0093] In summary, this embodiment proposes a child safety seat comprising the support foot assembly 100, the ISOFIX200, the first anti-misuse mechanism 300, the second anti-misuse mechanism 400, and the locking and unlocking mechanism 600. The locking and unlocking mechanism 600 can be operated to move and unlock or lock the ISOFIX. When the supporting foot 110 is in the folding position, the first anti-misuse mechanism 300 prevents the movement of the locking and unlocking mechanism 600, thereby locking the ISOFIX, while when the supporting foot 110 is in the supporting position, the first anti-misuse mechanism 300 releases the obstruction to the movement of the locking and unlocking mechanism 600, and then the ISOFIX can move. Moreover, when the ISOFIX 200 is moved to the extended position, the second anti-misuse mechanism 400 locks the supporting foot 110 in the supporting position, while when the ISOFIX 200 is moved to the retracted position, the second anti-misuse mechanism 400 releases the lock on the supporting foot 110 in the supporting position, allowing the supporting foot 110 to rotate between the supporting position and the folding position.

[0094] According to the first anti-misuse mechanism 300 and the second anti-misuse mechanism 400 of this embodiment, there is linkage between the supporting foot assembly 100 and the ISOFIX 200. Only when the supporting foot 100 is in the supporting position, theISOFIX 200 is allowed to extend from the child safety seat to engage with the car seat. In this way, when the user installs the child safety seat into the car seat, they must first switch the supporting foot 110 to the supporting position before continuing to engage the ISOFIX 200 to the car seat, thus avoiding the user forgetting to unfold the supporting foot 110. Furthermore, when the ISOFIX 200 is in the retracted position, it allows the supporting foot 110 to switch from the supporting position to the folding position, which avoids the user from directly folding the supporting foot 110 without switching the ISOFIX 200 to the retracted position after disengaging the child safety seat from the car seat. Therefore, avoid the child safety seat being in a state where the ISOFIX 200 is in the extended position and the supporting foot 110 is in the folding position, because when the child safety seat is in such a state, the user can connect the ISOFIX 200 to the car seat without unfolding the supporting foot 110, resulting in incorrect installation of the supporting foot 110.

[0095] In other embodiments, the child safety seat 1 further comprises a seat arranged above the base 500, for example, the seat can rotate horizontally relative to the base 500 to adapt to the usage needs of infants and children sitting in the seat in different situations. Specifically, the turntable connects the base 500 and the seat, and the turntable can rotate horizontally relative to the base 500 along with the seat, and can rotate horizontally at multiple angles along with the seat. At this time, the movable mechanism can be the turntable. When the movable mechanism is the turntable, the multiple adjustment positions of the turntable correspond to multiple positions after the turntable rotates horizontally at different angles (such as forward position, lateral position, backward position). The specific structure of the turntable can refer to the prior art, and its description is omitted in the present application.

[0096] The configuration of the first anti-misuse mechanism 300 is as follows: when the supporting foot 110 of the supporting foot assembly 100 is in the folding position, it blocks the movement of the unlocking member 320, which in turn blocks the movement of the unlocking member 320 to the unlocking position and the movement of the locking member 350, to maintain the lock of the turntable by the locking member 350 in one of the adjustment positions, and to limit the rotation of the turntable (for example, the turntable can be provided with multiple engagement holes in its circumferential direction to allow the turntable to be locked in the forward position, backward position, lateral position, etc.), and only allows theunlocking member 320 to move when the supporting foot 110 is in the supporting position, which in turn allows the unlocking member 320 to move to the unlocking position and drives the locking member 350 to move, thereby releasing the lock of the locking member 350 on the turntable at one of the adjustment positions, allowing the turntable to rotate and rotate to other adjustment positions. At this time, the unlocking member 320 can further move from the unlocking position to the locking position, allowing the locking member 350 to lock the turntable again at any adjustment positions.

[0097] The second anti-misuse mechanism 400 is configured such that when the turntable rotates to one of the adjustment positions, the supporting foot 110 of the supporting foot assembly 100 is locked in the supporting position, thereby restricting the rotation of the supporting foot assembly 100 relative to the base 500. Only when the turntable rotates to the other one of the adjustment positions, the second anti-misuse mechanism 400 can release the lock of the supporting foot 110 in the supporting position, allowing the supporting foot 110 to move to the folding position.

[0098] Wherein, for example, the backward position (i.e. the seat facing towards the rear of the car) is the normal use position of the child safety seat 1 in the car. When the support foot 110 is switched to the folding position, the first anti-misuse mechanism 300 is engaged with the turntable to lock the seat in the forward position. The user needs to first switch the supporting foot 110 to the supporting position before rotating the seat to the backward position, thus avoiding the user forgetting to open the supporting foot 110. Moreover, when the seat is in a position such as a backward position, the second anti-misuse mechanism 400 locks the supporting foot 110 in the supporting position. The user needs to rotate the seat to the forward position before switching the supporting foot 110 to the folding position, in order to avoid the supporting foot 110 accidentally detaching from the support position during use.

[0099] In other embodiments, the seat can change the pitch angle relative to the base 500 to adapt to the usage needs of infants and children sitting in the seat in different situations. Specifically, the adjustment mechanism connects the base 500 and the seat, and the adjustment mechanism can adjust the pitch angle relative to the base 500 along with the seat, and the adjustment mechanism can be adjusted to different pitch angles along with the seat. At this time, the movable mechanism can be the adjustment mechanism. When the movablemechanism is the adjustment mechanism, multiple adjustment positions of the adjustment mechanism correspond to multiple positions of the adjustment mechanism after moving at different pitch angles (such as upright position, supine position, etc.). The specific structure of the adjustment mechanism can refer to the prior art, and its description is omitted in the present application.

[0100] The configuration of the first anti-misuse mechanism 300 is: when the supporting foot 110 of the supporting foot assembly 100 is in the folding position, it blocks the unlocking member 320 from moving to the unlocking position and blocks the locking member 350 from moving, in order to maintain the locking of the adjustment mechanism by the locking member 350 in one of the adjustment positions and limit the movement of the adjustment mechanism (for example, the pitch adjustment mechanism may have multiple engagement holes in its pitch adjustment path to allow the pitch adjustment mechanism to be locked in the upright position, supine position, etc.). When the supporting foot 110 is in the supporting position, the unlocking member 320 is allowed to move to the unlocking position, which in turn drives the locking member 350 to move, to release the locking of the adjustment mechanism by the locking member 350 in one of the adjustment positions, allowing the adjustment mechanism to rotate and rotate to other adjustment positions. At this point, the unlocking member 320 can further move from the unlocking position to the locking position, allowing the locking member 350 to lock the adjustment mechanism again at any adjustment position.

[0101] The second anti-misuse mechanism 400 is configured to lock the supporting foot 110 of the supporting foot assembly 100 in the support position when the adjustment mechanism rotates to one of adjustment positions, thereby restricting the rotation of the supporting foot assembly 100 relative to the base 500. When the adjustment mechanism rotates to another one of adjustment positions, the second anti-misuse mechanism 400 can unlock the supporting foot 110 in the supporting position, allowing the supporting foot 110 to move to the folding position.

[0102] In other embodiments, the child safety seat 1 further comprises a support member arranged in the rear of the base 500, which can move relative to the base 500, for example, the support member can rotate or slide relative to the seat to adjust the length of the supportmember protruding out of the base 500, thereby allowing the support member to abut against the car seat backrest at a different distance from the base 500, avoiding the base 500 from tipping back during use. At this time, the movable mechanism can be the support member. When the support member is the movable mechanism, multiple adjustment positions of the support member correspond to multiple positions of the support member protruding from the base 500 of different lengths (such as extended or retracted positions, etc.). The specific structure of the support member can refer to the prior art, and its description is omitted in the present application.

[0103] The first anti-misuse mechanism 300 is configured such that when the supporting foot 110 of the supporting foot assembly 100 is in the folding position, it blocks the unlocking member 320 from moving to the unlocking position and blocks the locking member 350 from moving, to maintain the lock of the support member by the locking member 350 in one of the adjustment positions, and limit the movement of the support member (for example, the support member may have multiple engagement holes in the front-back direction to lock the support member in the appropriate front and back positions, to adapt to the front and back gaps between the child safety seat and various types of car seats, and to stably abut the child safety seat against the car seat). When the supporting foot 110 is in the supporting position, the unlocking member 320 is allowed to move to the unlocking position, which in turn drives the locking member 350 to move, to release the locking of the support member by the locking member 350 in one of the adjustment positions, allowing the support member to move and move to other adjustment positions. At this point, the support member can further move from the unlocking position to the locking position, allowing the locking member 350 to lock the movable mechanism again at any adjustment position.

[0104] The second anti-misuse mechanism 400 is configured such that when the support member moves to one of the adjustment positions, the supporting foot 110 of the supporting foot assembly 100 is locked in the supporting position, thereby restricting the rotation of the supporting foot 110 relative to the base 500. Only when the support member moves to the other one of the adjustment positions, the second anti-misuse mechanism 400 can release the lock of the supporting foot 110 in the supporting position, allowing the supporting foot 110 to rotate to the folding position.

[0105] Although preferred embodiments are shown and described herein, it should be understood that these embodiments are given only as examples. Those skilled in the art would come up with many variations, changes, and replacements without departing from the spirit of the present invention. Therefore, the accompanying claims are intended to cover all such variations falling within the spirit and scope of the invention.T1

Claims

WHAT IS CLAIMED IS:

1. A child safety seat (1), characterized in that the child safety seat (1) comprises: a base (500); a supporting foot assembly (100), which is pivotally connected to the base (500) and includes a supporting foot (110) that can be switched between a supporting position and a folding position relative to the base (500); a movable mechanism, which is movably arranged on the base (500); a locking and unlocking mechanism (600), comprising a locking member (350) and an unlocking member (320) that are movably set on the base (500), wherein the locking member (350) and the unlocking member (320) are connected to each other, the locking member (350) is configured to lock the movable mechanism, and the unlocking member (320) is configured to release the locking of the movable mechanism by the locking member (350); a first anti-misuse mechanism (300), which is configured to prevent the unlocking member (320) from moving when the supporting foot (110) is in the folding position, thereby preventing the movable mechanism from moving relative to the base (500); and to release the obstruction to the movement of the unlocking member (320) to allow the unlocking member (320) to move when the supporting foot (110) is in the supporting position, so that the movable mechanism can move relative to the base (500).

2. The child safety seat according to claim 1, characterized in that the movable mechanism has multiple adjustment positions, the locking member (350) is configured to lock the movable mechanism in one of the adjustment positions, the unlocking member (320) can be moved to an unlocking position to release the locking of the movable mechanism by the locking member (350) in the adjustment position, and the unlocking member (320) can further be moved to a locking position to drive the locking member (350) to lock the movable mechanism in any one of the adjustment positions, when the supporting foot (110) is in the folding position, the first anti-misuse mechanism (300) prevents the unlocking member (320) from moving from the locking position to the unlocking position.

3. The child safety seat (1) according to any one of claims 1 or 2, characterized in that: the first anti-misuse mechanism (300) comprises:a positioning member (310) that can be engaged to the supporting foot assembly (100) and the unlocking member (320), when the supporting foot (110) is in the folding position, the positioning member (310) abuts against the unlocking member (320) to prevent the unlocking member (320) from moving, and when the supporting foot (110) is in the supporting position, the positioning member (310) disengages from the unlocking member (320) to allow the unlocking member (320) to move.

4. The child safety seat (1) according to claim 3, characterized in that: the positioning member (310) comprises: a first end (311) and a second end (312); and a middle portion (313), which is located between the first end (311) and the second end (312), and is pivotally connected to the base (500); wherein when the supporting foot (110) is in the folding position, the first end (311) abuts against the unlocking member (320) to prevent the unlocking member (320) from moving, and when the supporting foot (110) is in the supporting position, the supporting foot assembly (100) abuts against the second end (312) to cause the positioning member (310) to rotate, causing the first end (311) to disengage from the unlocking member (320).

5. The child safety seat (1) according to claim 4, characterized in that: the direction of movement of the unlocking member (320) intersects with the direction of the movement trend of the first end (311) under the force of the unlocking member (320), so that the first end (311) prevents the unlocking member (320) from moving.

6. The child safety seat (1) according to any one of claims 4 or 5, characterized in that: the unlocking member (320) comprises a first wall (323a) and a second wall (323b) with intersecting extension directions, the first wall (323a) is engaged with the first end (311) along the direction of movement of the unlocking member (320), so that the first end (311) is subjected to the force of the unlocking member (320) and has a tendency to move, the second wall (323b) is engaged with the first end (311), and the extension direction of the second wall (323b) intersects with the direction of the movement tendency of the first end (311) under the force of the unlocking member (320), so that the first end (311) prevents the unlocking member (320) from moving.

7. The child safety seat (1) according to any one of claims 4 to 6, characterized in that:the first anti-misuse mechanism (300) further comprises a first reset member (360), which is disposed between the base (500) and the positioning member (310) and biases the first end (311) towards the direction in which the first end (311) abuts against the unlocking member (320).

8. The child safety seat (1) according to any one of claims 4 to 7, characterized in that: the supporting foot assembly (100) comprises a positioning rod (130), and when the supporting foot (110) is in the supporting position, the positioning rod (130) abuts against the second end (312) to allow the positioning member (310) to disengage from the unlocking member (320), thereby allowing the unlocking member (320) to move.

9. The child safety seat (1) according to any one of claims 1 to 8, characterized in that: the locking and unlocking mechanism (600) further comprises: a linkage member (330) connected to the unlocking member (320) and the locking member (350); wherein the unlocking member (320) slides in a front-back direction to drive the linkage member (330) to rotate around an axis extending in an up-down direction, and the linkage member (330) drives the locking member (350) to move in a left-right direction to selectively lock or unlock the movable mechanism.

10. The child safety seat (1) according to claim 9, characterized in that: the locking and unlocking mechanism (600) further comprises a fourth reset member (370), which is disposed between the locking member (350) and the base (500), and the locking member (350) is configured to lock the movable mechanism through the fourth reset member (370).

11. The child safety seat (1) according to any one of claims 1 to 10, characterized in that: the base (500) is equipped with a limiting member (340), which includes an elastic limiting recess (342), and the supporting foot assembly (100) is equipped with a positioning rod (130); when the supporting foot (110) is in the folding position, the positioning rod (130) is located in the limiting recess (342), and the limiting recess (342) exerts resistance to prevent the supporting foot (110) from leaving the folding position.

12. The child safety seat (1) according to claim 11, characterized in that:the limiting recess (342) is configured to face away from the supporting position, and both ends of the limiting recess (342) exceed an axis of the positioning rod (130).

13. The child safety seat (1) according to any one of claims 11 or 12, characterized in that: the limiting member (340) has an elastic end (341), and when the supporting foot (110) is in the supporting position, the positioning rod (130) compresses the elastic end (341).

14. The child safety seat (1) according to any one of claims 4 to 8, characterized in that: the base (500) is equipped with a limiting member (340), and when the supporting foot (110) is in the folding position, the limiting member (340) abuts against the second end (312) to prevent the positioning member (310) from rotate due to the force applied by the unlocking member (320) on the first end (311).

15. The child safety seat (1) according to any one of claims 1 to 14, characterized in that: the supporting foot (110) is pivotally connected to the base (500); the unlocking member (320) comprises a button portion (321) exposed to the outside of the base (500); and when the supporting foot (110) is in the supporting position, the button portion (321) is located between the supporting foot (110) and the movable mechanism.

16. The child safety seat (1) according to any one of claims 1 to 15, characterized in that: the movable mechanism is a ISOFIX (200), which can move relative to the base (500) between a retracted position and at least one extended position, and is used to connect with a car seat.

17. The child safety seat (1) according to claim 16, characterized in that: the ISOFIX (200) slides relative to the base (500) and is provided with multiple engagement holes (211) at intervals to allow the locking member (350) to be inserted into one of the engagement holes (211) to lock the ISOFIX (200) in the retracted position or the extended position.

18. The child safety seat (1) according to any one of claims 16 or 17, characterized in that: the child safety seat (1) further comprises a second anti-misuse mechanism (400); when the supporting foot (110) is in the supporting position and the ISOFIX (200) is inthe extended position, the ISOFIX (200) disengages from the second anti-misuse mechanism (400), and the second anti-misuse mechanism (400) engages with the supporting foot assembly (100) to keep the supporting foot (110) in the supporting position; and when the ISOFIX (200) is in the retracted position, the ISOFIX (200) contacts the second anti-misuse mechanism (400), causing the second anti-misuse mechanism (400) to disengage from the supporting foot assembly (100), allowing the supporting foot (110) to switch between the supporting position and the folding position.

19. The child safety seat (1) according to claim 18, characterized in that: the second anti-misuse mechanism (400) comprises: an engaging member (430) for engaging with the supporting foot assembly (100); a second reset member (450) that drives the engaging member (430) to engage with the supporting foot assembly (100); and a cable (440), one end of which is connected to the engaging member (430); when the ISOFIX (200) is in the extended position and the supporting foot (110) is in the supporting position, the engaging member (430) is engaged with the supporting foot assembly (100) under the action of the second reset member (450) to keep the supporting foot (110) in the supporting position, and when the ISOFIX (200) is in the retracted position, the ISOFIX (200) drives the other end of the cable (440), causing the cable (440) to drive the engaging member (430) disengage from the supporting foot assembly (100).

20. The child safety seat (1) according to claim 19, characterized in that: the supporting foot assembly (100) is provided with an engaging groove (121), and when the ISOFIX (200) is in the extended position and the supporting foot (110) is in the supporting position, the engaging groove (121) corresponds to the engaging member (430), allowing the engaging member (430) to be inserted into the engaging groove (121) to lock the supporting foot assembly (100), and when the supporting foot (110) is in the folding position, the engaging groove (121) is misaligned with the engaging member (430).

21. The child safety seat (1) according to any one of claims 19 or 20, characterized in that: the second anti-misuse mechanism (400) further comprises: a slider (420) connected to the other end of the cable (440), when the ISOFIX (200) is inthe retracted position, it abuts against the slider (420) to drive the slider (420) to move and drive the cable (440); and a third reset member (460), which is set between the base (500) and the slider (420), and biases the slider (420) towards the ISOFIX (200).

22. The child safety seat (1) according to claim 21, characterized in that: the base (500) comprises: a slider groove (530) that guides the movement of the slider (420); and a slider positioning member (540) for preventing the slider (420) from disengaging from the slider groove (530).

23. The child safety seat (1) according to claim 22, characterized in that: the slider (420) is equipped with a limit groove (421), and the slider positioning member (540) can abut against the groove wall of the limit groove (421) to limit the sliding range of the slider (420).

24. The child safety seat (1) according to any one of claims 19 to 23, characterized in that: the base (500) is equipped with a guide groove (511), which guides the direction of movement of the engaging member (430).

25. The child safety seat (1) according to any one of claims 1 to 24, characterized in that: the child safety seat (1) comprises a seat located above the base, the movable mechanism is a turntable connected to the seat, and the turntable can rotate in a horizontal direction relative to the base; or the movable mechanism is an adjustment mechanism connected to the seat, and the adjustment mechanism can rotate in an up-down direction relative to the base; or the movable mechanism is a support member, and the support member can do telescopic movement relative to the base, the support member is used to abut against the backrest of the car seat.

26. The child safety seat (1) according to claim 2, characterized in that: further comprising a second anti-misuse mechanism (400), wherein the second anti-misuse mechanism (400) is configured to lock the supporting foot (110) in the supporting position when the movable mechanism moves to one of the adjustment positions,thereby restricting the rotation of the supporting foot (110) relative to the base, and only when the movable mechanism moves to another one of the adjustment positions, the second anti-misuse mechanism can release the lock of the supporting foot (110) in the supporting position, allowing the supporting foot (110) to move to the folding position.

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