Base Assembly and Child Seat

Abstract

The present invention provides a base assembly (1) and a child seat. The base assembly (1) includes a base, a support leg (20), a slider (30), and a locking member (90), the base includes a base bracket (160), the slider (30) includes a slider bracket (340), the slider bracket (340) is slidably disposed on the base bracket (160), the support leg (20) is rotatably connected to the slider (30) and expands and contracts together with the slider (30), and the locking member (90) is used to lock the slider (340) to the base bracket (160). The base assembly (1) and the child seat in the present invention simplify the user's operation, so that the operation is simple and convenient, and the user experience is improved.

Description

[Technical field]

[0001] The present invention relates to the technical field of child seats, and in particular to a base assembly and a child seat. [Background technology]

[0002] Child car seats have become an important carrier for children when they go out. In order to increase the stability and safety of the car seat, support legs are installed on the base. When the car seat is in use, the support legs are unfolded and contact the ground, which can provide good support for the car seat and prevent it from tipping over. When not in use, the support legs can be folded at the bottom of the base to reduce the volume it occupies.

[0003] In order to reduce the occupied volume, the support legs can be set to be rotatable and slidable relative to the base. For more convenient operation, the support legs need to be rotated to release the sliding of the support legs. However, at present, the rotation and sliding structure of the support legs is complicated, which brings a poor user experience. Summary of the Invention

[0004] The present invention provides a base assembly including a base, a support leg, a slider, and a locking member, the slider being slidably disposed on the base, the support leg being rotatably connected to the slider and extending and retracting together with the slider, and the locking member being used to lock the slider to the base.

[0005] The present invention provides a base assembly including a base, a support leg, a slider, a drive member, and a locking structure, wherein the slider is slidably disposed on the base, the support leg is rotatably connected to the slider and moves telescopically relative to the base together with the slider, the locking structure is responsive to rotation of the support leg, and the drive member is connected to the support leg, and the slider is locked to or unlocked from the base.

[0006] In another aspect, the present invention provides a child car seat that includes a base assembly and a seat disposed on the base assembly. [Brief description of the drawings]

[0007] Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the present invention in conjunction with the accompanying drawings, in which the drawings are merely illustrative of the present invention and are not necessarily drawn to scale, and in which the same reference numerals represent the same or similar parts.

[0008] [Figure 1] FIG. 2 is a perspective view of a base assembly according to the present invention. [Diagram 2] FIG. 2 is a perspective view of a base assembly with some of the components omitted to show the internal structure of the present invention. [Diagram 3] FIG. 3 is an enlarged partial view of a portion A in FIG. 2. [Figure 4] FIG. 2 is a partial plan view of a base assembly in which some of the components are not shown to show the internal structure of the present invention. [Diagram 5] 5 is a cross-sectional view taken along line CC in FIG. 4, showing the slider in a locked state. [Figure 6] 5 is a cross-sectional view taken along line CC in FIG. 4, showing the slider in an unlocked state. [Figure 7] 5 is a cross-sectional view taken along line BB in FIG. 4, showing the slider in a locked state. [Figure 8] 5 is a cross-sectional view taken along line BB in FIG. 4, showing the slider in an unlocked state. [Figure 9] 4 is a partial cross-sectional view of a base assembly having a lock release member (not shown) according to the present invention. FIG. [Figure 10] 1 is a perspective view of two locking members of a base assembly according to the present invention. FIG. [Figure 11] FIG. 2 is a perspective view of the bottom of the base assembly of the present invention. [Figure 12] FIG. 13 is a partial perspective view of a base assembly with some parts removed to reveal the internal structure according to another embodiment of the present invention. [Figure 13] FIG. 2 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. [Figure 14] FIG. 2 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. [Figure 15] FIG. 2 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. [Figure 16] FIG. 2 is a partial perspective view of a base assembly according to another embodiment of the present invention. [Figure 17] FIG. 13 is a partial cross-sectional view of a base assembly with a slider in a locked state according to another embodiment of the present invention. [Figure 18] FIG. 13 is a partial cross-sectional view of a base assembly with a slider in an unlocked state according to another embodiment of the present invention. [Figure 19] FIG. 2 is a perspective view of a base assembly with support legs in an extended position according to the present invention. [Figure 20] FIG. 2 is a perspective view of a base assembly with support legs in a folded position according to the present invention. [Figure 21] FIG. 2 is a perspective view of a base assembly with some of the components removed to show the internal structure of the base assembly. [Figure 22] 1 is a partial perspective view of an internal structure of a base assembly in which a locking member covers a locking hole in the present invention; FIG. [Diagram 23] 13 is a partial perspective view of the internal structure of the base assembly from another angle in which the lock member is disengaged from the lock hole in the present invention; FIG. [Figure 24] 13 is a partial perspective view of the internal structure of a base assembly in which a locking member covers a locking hole, as viewed from another angle, according to the present invention. FIG. [Diagram 25] 1 is a partial cross-sectional view of a base assembly according to the present invention with the support legs approaching the deployed position. [Figure 26]2 is a partial cross-sectional view of a base assembly having support legs near a folded position in accordance with the present invention; FIG. [Figure 27] 11 is a partial cross-sectional view of a base assembly in which a locking member is not inserted into a locking hole in the present invention. FIG. [Figure 28] 1 is a partial cross-sectional view of a base assembly in which a locking member is inserted into a locking hole in accordance with the present invention; [Figure 29] FIG. 2 is a partial perspective view of the internal structure of the base assembly according to the present invention. [Diagram 30] FIG. 2 is a partial perspective view of the internal structure of the base assembly according to the present invention. [Diagram 31] FIG. 2 is a partial perspective view of the internal structure of the base assembly according to the present invention. [Diagram 32] FIG. 2 is a perspective view of a bush of the base assembly according to the present invention. [Diagram 33] FIG. 2 is a perspective view of a portion of a bushing of a base assembly according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] To more clearly explain the overall concept of the present invention, a detailed description will now be given in an illustrative manner in conjunction with the drawings of the specification.

[0010] In order to facilitate a thorough understanding of the present invention, numerous specific details are set forth in the following description; however, it should be noted that the present invention can be practiced in ways other than those described herein, and therefore the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0011] Furthermore, in the description herein, terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like, are intended merely for ease and simplicity of description, but are not intended to indicate or imply that devices or components must be constructed and operated in a particular orientation or direction, and therefore should not be construed as limitations on the present specification, as such terms indicate orientation or positional relationships based on the accompanying drawings.

[0012] In this application, unless otherwise clearly specified and limited, the terms "attached", "coupled", "connected", "fixed" and the like should be understood in a broad sense, for example, a fixed connection, a detachable connection, or an overall connection. It may be a direct connection, an indirect connection through an intermediate medium, an internal connection of two components, or an interrelationship between two components. However, indicating a direct connection means that the connection between two bodies is not made by a transition structure, but only forms a whole by a connection structure. The specific meaning of the above terms in this specification can be understood according to the specific situation of those skilled in the art.

[0013] In the present application, the "above" or "below" of a second feature of a first feature may be indirect contact via an intermediate medium between the first feature and the first feature, unless otherwise expressly specified and defined. In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "examples", "particular examples", "some examples" and the like means that the particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the general expression of the above terms is not necessarily for the same embodiment or embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be appropriately combined in any one or more embodiments or embodiments.

[0014] The present invention provides a base assembly 1 and a child car seat including the base assembly 1. The child car seat can be attached to a car seat for a baby or child to ensure the safety of the passenger.

[0015] A first embodiment of the present invention will now be described.

[0016] Fig. 1 is a perspective view of a base assembly in the present invention, Fig. 2 is a perspective view of the base assembly in the present invention with some of the components removed to show the internal structure, and Fig. 3 is a partially enlarged view of part A in Fig. 2.

[0017] 1 to 3, the child car seat may have a base assembly 1 and a seat (not shown). The base assembly 1 may have a base 10, a support leg 20, a slider 30, and a lock member 90. The seat is rotatably disposed on the base 10 and may have at least one forward position and one rearward position. The forward position may be a position where the seat faces the front of the vehicle, and the rearward position may be a position where the seat faces the rear of the vehicle. The forward position may be applicable to, for example, an older child, and the rearward position may be applicable to, for example, a younger baby, but the present invention is not limited thereto.

[0018] The support legs 20 are rotatably and telescopically connected to the base 10. For example, the support legs 20 may be rotatably connected to the slider 30 via a pivot 230. When the support legs 20 are used, the support legs 20 can extend from the base 10 and flip outward to contact the ground, which can prevent the child car seat from tipping over during a collision. When the support legs 20 are not used, the support legs 20 can rotate synchronously and retract to the bottom of the base 10. In this way, the overall size of the child car seat can be reduced, making it easier to store and use.

[0019] The base 10 can include a base bracket 160. The slider 30 can include a slider bracket 340. The slider bracket 340 is slidably provided on the base bracket 160, and the support legs 20 are rotatably connected to the slider 30 and can extend and retract together with the slider 30. The lock member 90 can lock the slider bracket 340 to the base bracket 160.

[0020] The support leg 20 can include a first section 210 and a second section 220. The first section 210 and the second section 220 can form a sleeve-like structure, and the second section 220 can be disposed within the first section 210 and can move relative to the first section 210 to lengthen or shorten the support leg 20.

[0021] The base bracket 160 can be used as a carrier to support the main weight of the base assembly 1. The slider bracket 340 can be sleeved into the base bracket 160. Each of the base bracket 160 and the slider bracket 340 can be formed symmetrically on both sides of the base assembly 1, but the present invention is not limited thereto. The slider groove 341 can be disposed on the slider bracket 340, for example by a pin, to limit the moving distance of the slider bracket 340 relative to the base bracket 160. Alternatively, the slider groove 341 can be formed in the base bracket 160. The restoring member 350 can be formed between the base bracket 160 and the slider bracket 340. The restoring member 350 can apply a force to the slider bracket 340 to move the slider bracket 340 in a direction extending from the base assembly 1.

[0022] The bushing 910 can be disposed between the base bracket 160 and the slider bracket 340. The bushing 910 can provide smooth sliding between the base bracket 160 and the slider bracket 340. The bushing 910 can be attached to the slider bracket 340 for movement therewith.

[0023] FIG. 4 is a partial plan view of the base assembly of the present invention with some parts removed to show the internal structure. FIG. 5 is a cross-sectional view taken along line CC of FIG. 4 with the slider in a locked state. FIG. 6 is a cross-sectional view taken along line CC of FIG. 4 with the slider in an unlocked state. FIG. 7 is a cross-sectional view taken along line BB of FIG. 4 with the slider in a locked state. FIG. 8 is a cross-sectional view taken along line BB of FIG. 4 with the slider in an unlocked state. FIG. 9 is a partial cross-sectional view of the base assembly of the present invention with the unlocking member removed. FIG. 10 is a perspective view of two locking members of the base assembly of the present invention.

[0024] The base assembly 1 may also include an unlocking member 80 (as shown in FIGS. 7 and 8 ). The unlocking member 80 may unlock the locking member 90 relative to the slider bracket and the base bracket in response to rotation of the support leg 20 relative to the slider 30 in a first direction. The first direction may be either a clockwise or counterclockwise direction. As shown in FIG. 5 , the first direction may be a counterclockwise direction. When viewed from the opposite viewing direction shown in FIG. 5 , it can be seen that the first direction is correspondingly clockwise.

[0025] The locking member 90 and the unlocking member 80 may be provided on the slider 30 as shown in Figures 6 to 8. The support leg 20 can be connected to the unlocking member 80. For example, the unlocking member 80 is welded to the upper end of the support leg 20 and can rotate together with the support leg 20. The unlocking member 80 and the support leg 20 can have the same rotation axis.

[0026] 5 and 6, the locking member 90 may include a locking pin 930. The slider bracket 340 may have a locking hole 342 formed therein. For example, the locking hole 342 may be formed on an upper surface of the slider bracket 340. The base bracket 160 may have a locking hole 161 formed therein. For example, the locking hole 161 may be formed on an upper surface of the base bracket 160. The bushing 910 may have a corresponding hole formed therein. When the locking hole 342, the locking hole 161, and the corresponding holes of the bushing 910 are aligned, the locking pin 930 may pass through the locking hole 342, the locking hole 161, and the corresponding holes of the bushing 910 to lock the slider bracket 340 to the base bracket 160.

[0027] The bushing 910 may have a positioning arm 911 that extends generally vertically upward from the body of the bushing 910 and curves to a generally horizontal portion at the end. A resilient member 920 may be secured below the end of the positioning arm 911 to continuously apply a constant force to the locking pin 930.

[0028] The locking member 90 may also include an elastic member 920. The elastic member 920 is provided between the locking pin 930 and other parts of the locking member 90, and can apply a force to the locking pin 930 toward the locking hole 342. That is, as shown in FIG. 5, the elastic member 920 applies a downward force to the locking pin 930, and the locking pin 930 can automatically move downward and pass through the holes of the locking hole 342, the locking hole 161, and the bushing 910 when the holes of the locking hole 342, the locking hole 161, and the bushing 910 are aligned with each other. Alternatively, if the bushing 910 does not cover the area around the locking hole 342, the bushing 910 may not have a hole.

[0029] 7 to 10, the locking member 90 may include an arm portion 940. The arm portion 940 may extend in a curved manner from the locking member 90. As shown in FIG. 4, the slider bracket 340 is integrally formed at the front (left side of FIG. 4) and branches into two parallel tubular portions at the rear (right side of FIG. 4) to cooperate with the base bracket 160. A first end (e.g., the right end of FIG. 9) of the arm portion 940 is the lock pin 930, and a second end (e.g., the left end of FIG. 9) of the arm portion 940 is rotatably connected to the front of the slider bracket 340, and the entire locking member 90 is rotatable around the second end. That is, the first end and the second end may be opposite ends of the arm portion 940. The arm portion 940 has a convex portion 941 formed between the first end and the second end. The convex portion 941 may be a cylindrical protrusion that protrudes perpendicularly from the arm portion 940.

[0030] 7, the unlocking member 80 may include a cam 810. A push protrusion 811 protruding radially from the cam 810 may be formed on the cam 810. The cam 810 may have a small radius on an upper portion of the push protrusion 811 such that an upper portion of the cam 810 does not press the convex portion 941 when the cam 810 rotates. The cam 810 may have a large radius on a lower portion of the push protrusion 811 such that a lower portion of the cam 810 presses the convex portion 941 when the cam 810 rotates.

[0031] When the support leg 20 rotates in a first direction relative to the slider 30, the push protrusion 811 can actuate the protrusion to rotate the locking member 90 in the first direction relative to the second end, releasing the lock between the slider bracket 340 and the base bracket 160.

[0032] 6 to 8, when the support leg 20 and the unlocking member 80 rotate counterclockwise until the push protrusion 811 contacts the convex portion 941, the push protrusion 811 activates the convex portion 941 to rotate the unlocking member 90 counterclockwise around its left end, moving the lock pin 930 upward to unlock the slider bracket 340 from the base bracket 160. That is, after the support leg 20 rotates to an angle corresponding to the push protrusion 811, the lock pin 930 is held at a position away from the lock holes 342 and 161, allowing the slider bracket 340 to move relative to the base bracket 160.

[0033] The base assembly 1 may further include a conversion structure 60 (see FIGS. 12 and 13). The specific structure and operation procedure of the conversion structure 60 will be described in detail below.

[0034] 9 and 10, a limiting portion 943 may be formed between both ends of the arm portion 940. The movement distance of the limiting portion 943 relative to the slider bracket 340 may be restricted. For example, referring to FIGS. 5 and 9, an arc-shaped groove 344 may be formed in the slider bracket 340, and a hole may be formed in the limiting portion 943. The pin passes through the hole in the limiting portion 943 and the arc-shaped groove 344 of the slider bracket 340, allowing the pin to move within the range of the arc-shaped groove 344 (although the present invention is not limited thereto, and other movement restriction methods may be used).

[0035] 5 and 10, a part of the first end of the arm portion 940 of the locking member 90 may be formed in a curved shape so as to increase the structural strength of the locking member 90 while bypassing a part of the slider bracket 340. Therefore, the protrusion 941 and the lock pin 930 may be located on opposite sides of the arm portion 940.

[0036] As shown in Figures 5 and 8, by designing the distance from the convex portion 941 to the second end, the power arm of the cam 810 that presses the convex portion 941 can be changed, and the amount of force required to unlock the slider bracket 340 and the base bracket 160 can be adjusted.

[0037] In order to realize the telescopic lock when the support leg 20 is in the use position, a positioning protrusion / recess can be provided on the upper cover of the slider 30, and a corresponding positioning recess / protrusion can be provided on the base 10 to perform the concave / convex matching. Therefore, when the slider 30 is extended, the above-mentioned protrusion engages with the recess, indicating to the operator that the slider 30 has been extended to a predetermined position and preventing the slider 30 from being further extended.

[0038] FIG. 11 is a bottom perspective view of the base assembly in the present invention. Referring to FIG. 11, the base 10 may further include a receiving groove 170. When the support leg 20 is folded, the support leg 20 in the folded state may be received in the receiving groove 170 so as not to protrude from the bottom surface of the base 10 or to protrude slightly from the bottom surface of the base 10. The base 10 may further include a locking member 180. The locking member 180 may be in the form of a button movably provided on the bottom surface of the base 10, and may be engaged to lock one end of the support leg 20 in the receiving groove 170. The locking member 180 may prevent the support leg 20 from being turned to the unfolded position by mistake.

[0039] Fig. 12 is a partial perspective view of a base assembly according to another embodiment of the present invention, with some parts removed to show the internal structure. Fig. 13 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. To avoid repetition, only the differences between this embodiment and the previous embodiment will be described below.

[0040] 12 and 13, the base assembly 1 may further include a conversion structure 60. The conversion structure 60 may connect the base 10 and the slider 30 at both ends, respectively, so as to apply a force to the slider 30 toward the base 10 in response to the support leg 20 rotating in a first direction relative to the slider 30. The conversion structure 60 may be directly or indirectly connected to the base 10 and the slider 30. The conversion structure 60 may have, for example, a telescopic structure (shown in FIG. 12) formed by a plurality of rods rotating with respect to each other to form a plurality of "X"-shaped units. The conversion structure 60 may be connected to the support leg 20 via a link member 630. The link member 630 may be a flexible rope or wire, and may bypass the unlocking member 80 (or may bypass another driving member). When the support leg 20 rotates in the first direction, the link member 630 activates the conversion structure 60 by winding the unlocking member 80, shortening the conversion structure 60, thereby operating the slider 30 and the support leg 20 together toward the base, and shortening the front-rear size of the base assembly 1. When the support leg 20 rotates in the first direction, the force with which the link member 630 activates the slider 30 becomes greater than the force required for the lock pin 930 to disengage from the recess 162 (see FIGS. 5 and 6), and unlocks the slider bracket 340 from the base bracket 160.

[0041] The process of shortening the conversion structure 60 as described above can be realized so that the conversion structure 60 can be formed with two ends 610 and a pivot part 620, as shown in FIG. 12. The two ends 610 and the pivot part 620 are slidably connected to the front part of the slider bracket 340. Specifically, the two ends 610 are restricted in the front-rear direction and can slide in the approximately left-right direction. The pivot part 620 is restricted in the left-right direction and can slide in the front-rear direction. The link member 630 is connected to the pivot part 620. When the support leg 20 rotates in the first direction, the link member 630 pulls the pivot part 620 forward (to the left in FIG. 13), moving the pivot part 620 forward. Since the forward movement of the two ends 610 is restricted, the distance between the pivot part 620 and the two ends 610 is shortened, and the entire conversion structure 60 is shortened.

[0042] When the support leg 20 rotates in a second direction opposite to the first direction (e.g., clockwise in FIG. 13 ), the link member 630 no longer applies force to the conversion structure 60, and the flexible link member 630 becomes relaxed. The slider bracket 340 moves in a direction in which the base assembly 1 extends relative to the base bracket 160 due to the action of the restoring member 350. In this process, the slider bracket 340 moves together with the front end of the conversion structure 60, and the rear end of the conversion structure 60 is directly or indirectly fixed to the base bracket 160, thereby causing the conversion structure 60 to extend.

[0043] Therefore, in this embodiment, the support leg 20 can be folded or unfolded by simply rotating the support leg 20, and the slider 30 can be moved and fixed or unfixed to the base bracket 160 via the slider bracket 340. That is, the entire base assembly 1 can be folded or unfolded in only one operation step. The conversion structure 60 is not limited to the form shown in Figs. 12 and 13, and can have various forms.

[0044] Fig. 14 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention, and Fig. 15 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. To avoid repetition, in the following, only the differences between this embodiment and the previous embodiment will be described.

[0045] 14 and 15, in this embodiment, the base assembly 1 does not have the unlocking member 80. The locking member 90 may include a locking pin 930. The locking member 90 in this embodiment may not have the protrusion 941. The locking member 90 may be fixed to the slider bracket 340. The locking hole 342 may be formed in the slider bracket 340. The recess 162 may be formed in the base bracket 160. The locking pin 930 may pass through the locking hole 342 and enter the recess 162 to lock the slider bracket 340 to the base bracket 160.

[0046] The recesses 162 can be configured such that when the slider bracket 340 is pressed against the base bracket 160 with a force above a threshold value, the locking pin 930 disengages from the recesses 162 , unlocking the slider bracket 340 from the base bracket 160 .

[0047] The recess 162 can be formed as a spherical groove, and one end of the locking pin 930 can be shaped to match the spherical groove so that the spherical groove acts as a guide when the locking pin 930 is pressed. It is understood that the recess 162 can also be formed in other shapes, and the present invention is not limited thereto.

[0048] Fig. 16 is a partial perspective view of a base assembly according to another embodiment of the present invention. Fig. 17 is a partial cross-sectional view of a base assembly with a slider in a locked state according to another embodiment of the present invention. Fig. 18 is a partial cross-sectional view of a base assembly with a slider in an unlocked state according to another embodiment of the present invention. To avoid repetition, only the differences between this embodiment and the previous embodiment are described below.

[0049] 16 to 18, in this embodiment, the base assembly 1 does not have an unlocking member 80. The locking member 90 in this embodiment does not include the arm portion 940, and may include an elastic member 920, a lock pin 930, a fixing cover 950, and a fixing sheet 960. The bushing 910 in this embodiment may not include the positioning arm 911.

[0050] The interior of the fixed cover 950 may be formed as a chamber 951 for accommodating the elastic member 920 and the lock pin 930. An opening may be formed below the fixed cover 950 so that the lock pin 930 extends partially outward. The chamber 951 inside the fixed cover 950 may be formed in a substantially cylindrical shape, although the present invention is not limited thereto. The chamber 951 inside the fixed cover 950 may also be formed in a prismatic shape.

[0051] The lock pin 930 may be formed to match with a chamber 951 inside the fixed cover 950, and may move linearly downward guided by the chamber 951. The size of the upper part of the lock pin 930 may be larger than the lower opening of the fixed cover 950, and the size of the lower part of the lock pin 930 may be smaller than the upper opening of the fixed cover 950, so that the lock pin 930 may partially protrude outside the opening without being completely separated from the fixed cover 950.

[0052] The fixed sheet 960 can be formed as a plate-like member extending laterally from the bottom of the fixed cover 950. The fixed sheet 960 can be formed integrally with the fixed cover 950. Alternatively, the fixed sheet 960 and the fixed cover 950 can be formed independently and connected to each other. The fixed sheet 960 can be formed in a rectangular shape, but the present application is not limited thereto. The slider bracket 340 can include a fixed portion 343. The fixed portion 343 extends upward from both sides above the slider bracket 340 and curves inward to form a certain space (chute). The fixed sheet 960 can be horizontally inserted and fixed in the space (chute) so that the lock member 90 is fixed on the slider bracket 340. The fixed sheet 960 can also be removed from the slider bracket 340 by moving horizontally. It should be understood that the fixed sheet 960 can also be fixed to the slider bracket 340 by other known methods. The slider bracket 340 branches into two parallel tubular portions at the rear (right side in FIG. 17) so that the two locking members 90 can be fixed to the two parallel tubular portions (shown in FIG. 16), respectively.

[0053] The elastic member 920 is disposed within the chamber 951 and is capable of abutting against an upper portion of the lock pin 930 to hold a downward force on the lock pin 930 .

[0054] The base assembly 1 may further include a conversion structure 60. The conversion structure 60 is connected to the base 10 and the slider 30 at both ends, respectively, and may apply a force to the slider 30 toward the base 10 in response to a rotation of the support leg 20 relative to the slider 30 in a first direction (e.g., counterclockwise in FIG. 13). The conversion structure 60 may be directly or indirectly connected to the base 10 and the slider 30. The conversion structure 60 may have, for example, a telescopic structure (shown in FIG. 12) formed by a plurality of rods rotating with respect to each other to form a plurality of "X"-shaped units. The conversion structure 60 may be connected to the support leg 20 via a link member 630. The link member 630 may be a flexible rope or wire, and may bypass the unlocking member 80 (or may bypass another driving member). When the support leg 20 rotates in the first direction, the link member 630 activates the conversion structure 60 by winding the unlocking member 80, shortening the conversion structure 60, thereby moving the slider 30 and the support leg 20 together toward the base, shortening the size of the base assembly 1 in the front-rear direction (the expansion and contraction process of the conversion structure 60 can be known from the previous embodiment). When the support leg 20 rotates in the first direction, the force with which the link member 630 activates the slider 30 becomes greater than the force required for the lock pin 930 to disengage from the recess 162, unlocking the slider bracket 340 from the base bracket 160.

[0055] When the support leg 20 rotates in a second direction opposite to the first direction (e.g., clockwise in FIG. 13 ), the link member 630 no longer applies force to the conversion structure 60, and the flexible link member 630 is in a relaxed state. The slider bracket 340 moves in a direction in which the base assembly 1 extends relative to the base bracket 160 due to the action of the restoring member 350. In this process, the slider bracket 340 moves together with the front end of the conversion structure 60, and the rear end of the conversion structure 60 is directly or indirectly fixed to the base bracket 160, so that the conversion structure 60 extends.

[0056] Therefore, in this embodiment, the support leg 20 can be folded or unfolded simply by rotating the support leg 20, and the slider 30 can be moved to be fixed or unfixed to the base bracket 160 via the slider bracket 340. That is, the entire base assembly 1 can be folded or unfolded in only one operation step.

[0057] When the support leg 20 rotates, the link member 630 pulls the conversion structure 60, shortening the conversion structure 60, thereby pulling the slider 30 and the support leg 20 together toward the base, shortening the size of the base assembly 1 in the front-rear direction. When the support leg 20 rotates, the force with which the link member 630 pulls the slider 30 is greater than the force required for the lock pin 930 to disengage from the recess 162. That is, in this embodiment, the support leg 20 can be folded or unfolded simply by rotating the support leg 20, and the slider bracket 340 can be released from the base bracket 160 by moving the slider 30. In this way, the folding or unfolding of the entire base assembly 1 can be performed in only one operation step.

[0058] The present invention also provides a base assembly and a child seat which have a positive locking effect by supporting the support legs and are easy to unfold and fold. The present invention provides a base assembly 1 and a child seat including the base assembly 1. The child seat can be attached to a car seat for a baby or child to ensure the safety of the passenger.

[0059] Figure 19 is a perspective view of a base assembly of the present invention with the support legs in an extended position. Figure 20 is a perspective view of a base assembly of the present invention with the support legs in a folded position. Figure 21 is a perspective view of a base assembly with some of the components removed to show the internal structure of the base assembly of the present invention. Figure 22 is a partial perspective view showing the internal structure of the base assembly of the present invention with the locking member covering the locking hole.

[0060] 19 to 22, the child car seat may have a base assembly 1 and a seat (not shown). The base assembly 1 may have a base 10, a support leg 20, a slider 30, a driving member 360, and a lock structure. The seat is rotatably disposed on the base 10 and may have at least one forward position and one rearward position. The forward position may be a position where the seat faces the front of the vehicle, and the rearward position may be a position where the seat faces the rear of the vehicle. The forward position may be applicable to, for example, an older child, and the rearward position may be applicable to, for example, a younger baby, but the present invention is not limited thereto.

[0061] The support legs 20 are rotatably and telescopically provided on the base 10. The slider 30 is slidably provided on the base 10. The support legs 20 are rotatably connected to the slider 30 via a pivot 230, and can move telescopically relative to the base 10 together with the slider 30. The pivot 230 is provided at the front of the slider 30 and can move together with the slider 30. When the support legs 20 are used, the support legs 20 can extend from the base 10 and flip outward to contact the ground (shown in FIG. 19), thereby preventing the child car seat from tipping over during a collision. When the support legs 20 are not used, the support legs 20 can rotate synchronously and retract to the bottom of the base 10 (shown in FIG. 20). In this way, the overall size of the child car seat can be reduced, making it easier to store and use.

[0062] The base 10 may include a base upper cover 11, a base lower cover 12, and a decorative cover 13. The base upper cover 11 and the base lower cover 12 are joined to each other from above and below to define the internal space of the base 10. A recess is formed in the front of the joined base upper cover 11 and base lower cover 12, which allows the slider 30 to move in an expanding and contracting manner relative to the base 10. The decorative cover 13 is disposed in the recess and moves together with the slider 30. The decorative cover 13 can cover the recess without directly exposing the internal structure of the base 10.

[0063] The base 10 may further include a base bracket 160. The base bracket 160 may be located in an internal space defined by the base upper cover 11 and the base lower cover 12. The slider 30 may include a slider bracket 340 and an elastic member 350a. Alternatively, the elastic member 350a is a restoring member. The slider bracket 340 may have a symmetrical structure. The front part of the slider bracket 340 may be provided inside the decorative cover. The rear part of the slider bracket 340 is slidably sleeved in the base bracket 160. The rear part of the slider bracket 340 may extend rearward from the front part of the slider bracket to form a double arm structure. The locking structure may selectively lock or unlock the slider bracket 340 to the base bracket 160 in response to the rotation of the support leg 20 to which the driving member is connected.

[0064] The base bracket 160 can be used as a carrier to support the main weight of the base assembly 1. The slider bracket 340 can be sleeved on the base bracket 160. Each of the base bracket 160 and the slider bracket 340 can be formed symmetrically on both sides of the base assembly 1, but the present invention is not limited thereto. The slider groove 341 can be disposed on the slider bracket 340 to limit the moving distance of the slider bracket 34 relative to the base bracket 160, for example, by a slider rod 342a (see Figs. 31 and 32). The slider rod 342a can be a pin. Alternatively, the slider groove 341 can be formed on the base bracket 160. Both ends of the elastic member 350a can be connected between the base 10 and the slider bracket 340 to apply an elastic force. Specifically, both ends of the elastic member 350a can be connected between the fixed shaft 122 on the base lower cover 12 and the slider bracket 340. Alternatively, the elastic member 350a may be formed between the base upper cover 11 and the slider bracket 340. The elastic member 350a can apply a force to the slider bracket 340 so that the slider bracket 340 moves in a direction extending from the base assembly 1, thereby realizing automatic extension of the slider bracket 340.

[0065] The bushing 910 may be disposed between the base 10 and the slider 30. In one embodiment, the bushing 910 may be provided between the base bracket 160 and the slider bracket 340. The bushing 910 may make the sliding between the base bracket 160 and the slider bracket 340 smoother. The bushing 910 may be attached to the slider bracket 340 so as to move together with the slider bracket 340. The bushing 910 may be formed by connecting two plastic blocks, but the present invention is not limited thereto.

[0066] FIG. 23 is a partial perspective view of the internal structure of the base assembly of the present invention from another viewpoint, in which the locking member is offset from the locking hole. FIG. 24 is a partial perspective view of the internal structure of the base assembly of the present invention from another viewpoint, in which the locking member covers the locking hole. FIG. 25 is a partial cross-sectional view of the base assembly of the present invention with the support legs approaching the deployed position. FIG. 26 is a partial cross-sectional view of the base assembly of the present invention with the support legs approaching the folded position. FIG. 27 is a partial cross-sectional view of the base assembly of the present invention with the locking member not inserted in the locking hole. FIG. 28 is a partial cross-sectional view of the base assembly of the present invention with the locking member inserted in the locking hole.

[0067] 25 to 27, the lock structure may include a lock member 930a. Alternatively, the lock structure may be formed as a lock member 930a. The lock member 930a may be disposed on the slider 30 (as shown in FIG. 21). In another embodiment, the lock member 930a may be disposed elsewhere. For example, the lock member may be disposed on an arm portion (not shown) pivotally connected to the slider 30. Alternatively, the lock member 930a is a lock pin (see FIG. 27 for details). The lock member 930a may be formed as a pin. The base 10 may include a lock hole 161 (see FIG. 27 for details). Specifically, the lock hole 161 may be disposed on the upper surface of the base bracket 160. The lock structure may lock the slider 30 to the base 10 by inserting the lock member 930a into the lock hole 161. The upper surface of the base bracket 160 may be provided with a mounting seat 950a for accommodating the lock member 930a. Alternatively, the mounting seat 950a is a fixed cover. The mounting seat 950a may restrict the locking member 930a so that the locking member 930a can only move in the up and down directions.

[0068] 22, the slider bracket 340 may include a fixing portion 343. The fixing portion 343 extends upward from the upper front and rear sides of the slider bracket 340, respectively, and then bent inward to form a certain space (chute). This space can be used to accommodate the mounting seat 950a.

[0069] Also, the reset member 920a may be disposed below the lock member 930a (as shown in FIG. 27). Alternatively, the reset member 920a is an elastic member. The lower end of the reset member 920a abuts against the mounting seat 950a, and the upper end of the reset member 920a abuts against the lock member 930a. The reset member 920a can apply pressure to the lock member 930a in a direction to disengage the lock member 930a from the lock hole 161 (i.e., upward in FIG. 27). The reset member 920a realizes an automatic unlocking function by continuing to apply pressure to the lock member 930a. The reset member 920a may be a helical spring, but the present invention is not limited thereto.

[0070] 23 and 24, the lock structure may include a driving member 360. The driving member 360 is disposed between the base upper cover 11 and the base bracket 160 (as shown in FIG. 20). The driving member 360 may be a torsion spring and is provided at the front of the slider 30. Specifically, the driving member 360 may be sleeved on the pivot 230. The driving member 360 may include a first end 361 and a second end 362. The first end 361 may be connected to the lock member 930a. The second end 362 abuts against the support leg 20. The support leg 20 may have a rotating support portion 210a. One end of the rotating support portion 210a is sleeved on the pivot 230 and can rotate around the pivot 230. When the support leg 20 extends, the rotating support portion 210a is pressed against the second end 362 to obtain a buffer effect.

[0071] The first end 361 extends and penetrates the mounting seat 950a and the locking member 930a. The locking member 930a may have a through hole 931 (shown in FIGS. 26 and 27) through which the first end 361 penetrates. The through hole 931 may be formed in an elongated shape, that is, the through hole 931 may extend a certain length in the vertical direction. The first end 361 may also have an elastic barb formed thereon, the size of which in the vertical direction is slightly larger than the size of the through hole 931. Furthermore, when the first end 361 passes through the through hole 931, it is folded back to form a U-shaped elastic barb, or before the first end 361 passes through the through hole 931, an elastic barb is first formed, and then the elastic barb is pressed to elastically deform so as to pass through the through hole 931, and then the pressing of the elastic barb is released to prevent the elastic barb from coming off the through hole 931. After first end 361 passes through through hole 931, the elastic barb is blocked by through hole 931 and cannot come out of through hole 931. Also, first end 361 may be formed as a separate structure to prevent it from coming out of through hole 931.

[0072] When the support leg 20 rotates, the second end 362 is pressed by the rotation support 210a, which presses the second end 362 to bias the first end against the locking member 930a. The rotation support 210a can press against the second end 362 when the support leg 20 rotates at an angle from the folded position to the unfolded position. For example, the angle may be an inclusive angle of 60° from the folded position. The angle may also be an inclusive angle of 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, etc. from the folded position. Note that the present invention does not limit the specific value of the angle. The locking member 930a is inserted into the locking hole 161 when the support leg 20 is fully opened, that is, when the support leg 20 is rotated from the folded position to the unfolded position at an angle in the range of 87° to 90°.

[0073] During the rotation of the support leg 20 from the folded position to the unfolded position, the rotation support portion 210a pushes the second end 362 upward, and the first end 361 moves downward accordingly. When the pressure applied to the lock member 930a by the first end 361 becomes greater than the pressure applied to the lock member 930a by the reset member 920a, the lock member 930a tends to move downward (i.e., in the direction of being inserted into the lock hole 161). At this time, if the lock member 930a is not aligned with the lock hole 161 (as shown in FIG. 23), the lock member 930a abuts against the upper surface of the base bracket 160. When the support leg 20 is further rotated while the slider 30 continues to advance until the lock member 930a is aligned with the lock hole 161 (as shown in FIG. 24), the lock member 930a moves downward and passes through the lock hole 161, thereby locking the slider bracket 340 to the base bracket 160 (as shown in FIG. 28).

[0074] The support legs 20 may be arranged to be automatically deployed after being unlocked. The support legs 20 may also be arranged to be manually deployed. The drive member 360 can provide a buffer for the support legs 20 when they are deployed and apply pressure to the locking member 930a in response to the rotation of the support legs 20 to achieve the locking function.

[0075] While the support leg 20 rotates from the unfolded position to the folded position, the pressure applied by the rotation support part 210a to the second end 362 gradually decreases. Therefore, the pressure applied by the first end 361 to the lock member 930a gradually decreases. When the pressure applied by the first end 361 to the lock member 930a becomes smaller than the pressure applied by the reset member 920a to the lock member 930a, the lock member 930a moves upward (i.e., in a direction away from the lock hole 161), thereby unlocking the slider bracket 340 from the base bracket 160. After the slider bracket 340 is unlocked from the base bracket 160, the slider bracket 340 is movable relative to the base bracket 160.

[0076] As shown in FIG. 23 and FIG. 24, the driving member 360 is symmetrical and has two first ends 361 and one second end 362. The two first ends 361 may be connected to two locking members 930a, respectively. However, in other embodiments, the driving member 360 may have one first end 361 and one second end 362. For example, the base assembly 1 may have two driving members 360 arranged symmetrically. Also, the base assembly 1 may have one locking member 930a and one driving member 360.

[0077] The base assembly 1 may further include a conversion structure 60. The conversion structure 60 may connect the base 10 and the slider 30 at both ends, respectively, and applies a force to the slider 30 toward the front (to the right in FIG. 25) in response to the rotation of the support leg 20 from the folded position to the unfolded position. The conversion structure 60 may be directly or indirectly connected to the base 10 and the slider 30. The conversion structure 60 may have a telescopic structure, such as a telescopic structure formed by multiple rods rotated relative to each other to form multiple "X"-shaped units (as shown in FIGS. 23 and 24). The conversion structure 60 may be connected to the support leg 20 via a link member (not shown). The link member may be a flexible rope or wire.

[0078] The above-mentioned process of shortening the conversion structure 60 may be realized by forming two ends 610 and a pivot part 620 on the conversion structure 60. The two ends 610 and the pivot part 620 are both slidably connected to the front part of the slider bracket 340. Specifically, the two ends 610 are constrained in the front-rear direction and can slide in the approximately left-right direction, and the pivot part 620 is constrained in the left-right direction and can slide in the front-rear direction. A link member is connected to the pivot part 620. When the support leg 20 rotates from the folded position to the unfolded position, the link member pulls the pivot part 620 forward (to the right in FIG. 25), which causes the pivot part 620 to move forward. At this time, the two ends 610 are prevented from moving forward of the base 10, so that the distance between the pivot part 620 and the two ends 610 is shortened, and the length of the conversion structure 60 as a whole is shortened.

[0079] When the support leg 20 rotates from the unfolded position to the folded position, the link member no longer exerts a force on the conversion structure 60, and the flexible link member becomes relaxed. The slider bracket 340 moves backward relative to the base bracket 160 due to the action of the elastic member 350a. In this process, the slider bracket 340 moves together with the front end of the conversion structure 60, and the conversion structure 60 is shortened because the rear end of the conversion structure 60 is directly or indirectly fixed to the base bracket 160.

[0080] FIG. 29 is a partial perspective view showing the internal structure of a base assembly in the present invention, and FIG. 30 is a partial perspective view showing the internal structure of a base assembly in the present invention.

[0081] The buffer 121 may be disposed on the base under cover 12. The buffer 121 may be formed as a buffer rib. The buffer 121 may also be formed in other forms having a buffer function. The buffer 121 may be formed of a material such as soft adhesive, foam, etc. The buffer rib may have elasticity and be suspended on the base under cover 12. When the slider 30 moves toward the base 10, it abuts against the buffer 121 and is buffered. This prevents noise caused by the slider bracket 340 and / or the bush 910 colliding with the base under cover 12 when the support leg 20 is deployed.

[0082] In the present invention, the driving member 360 is sleeved on the pivot 230 to bias the locking member 930a to lock into the locking hole 161 of the base bracket 160. The first end 361 of the driving member 360 is connected to the locking member 930a, and the second end 362 of the driving member 360 is provided with a reset member 920a for pushing the locking member 930a upward by pressing against the support leg 20. Therefore, when the support leg 20 is extended but not rotated, the locking member 930a is not inserted into the locking hole 161 by the elastic force of the reset member 920a. When the support leg 20 rotates outward, the support leg 20 is pressed against the second end 362 of the driving member 360, so that the first end 361 is inserted into the locking hole 161 overcoming the elastic force of the reset member 920a, thereby locking the slider bracket 340 to the base bracket 160. When the support leg 20 is folded, the support leg 20 is rotated inward to release the twist of the first end 361 of the driving member 360. The lock member 930a is disengaged from the lock hole 161 by the action of the reset member 920a, and the lock between the slider bracket 340 and the base bracket 160 can be released.

[0083] Fig. 31 is a partial perspective view of the internal structure of the base assembly of the present invention. Fig. 32 is a perspective view of a bushing of the base assembly of the present invention. Fig. 33 is a perspective view of a part of a bushing of the base assembly of the present invention.

[0084] The bushing 910 may be made of wear-resistant and smooth plastic material. The bushing 910 may be formed with an annular rib 911a and a hook 912. The annular rib 911a may be disposed on the side of the bushing 910. The annular rib 911a may extend into the slider groove 341 (as shown in FIG. 22 ) to avoid direct friction between the slider rod 342a and the slider bracket 340. The hook 912 may be formed on the front and rear ends of the bushing 910. The hook 912 can engage with the slider bracket 340 by its deformation fit or interference fit. In addition, the hook 912 located at the front end acts with the buffer 121 on the base 10 to provide a buffer effect.

[0085] The bushing 910 may include two bushing halves 910' that are symmetrical to each other. Each of the bushing halves 910' may have a rib 911 and a hook 912, respectively, as described above.

[0086] 32, the bushing 910 is made of a smooth, wear-resistant material such as plastic, ceramic, metal, etc., and is formed by contacting two pieces, which are engaged on the slider bracket 340 via the front and rear hooks 912. Therefore, a good sliding gap can be secured between the bushing 910 and the base bracket 160, ensuring smooth sliding and low noise. During assembly, the assembly can be completed quickly by deformation of the hooks 912, which is convenient for production and assembly.

[0087] The present invention has at least one of the following advantages.

[0088] 1. In the present invention, the slider and the base are locked with a locking member, so that the support legs can perform a stable supporting role when deployed. In particular, when the child is using the seat, the child's feet may intentionally or unintentionally kick the slider. If the kicking force is too strong, the slider may retract into the base. The action of the locking member can prevent the slider from retracting into the base, and the support legs are no longer able to perform their supporting role, ensuring the support stability of the support legs and further ensuring the safety of the child seat when used.

[0089] 2. The slider bracket and base bracket enable stable and smooth sliding between the slider and base, improving the structural strength of the child car seat.

[0090] 3. The unlocking member allows the slider bracket and base bracket to be unlocked while rotating the support leg, thereby allowing the support leg to rotate and translate, and the purpose of folding or unfolding the support leg can be achieved with a single action.

[0091] 4. Since the locking member and the unlocking member are both disposed on the slider, there is no need to provide a separate support structure for supporting the locking member and the unlocking member.

[0092] 5. By providing the bushing, the relative sliding between the slider bracket and the base bracket can be made smoother.

[0093] 6. Locking and unlocking of the slider bracket and the base bracket can be conveniently and reliably controlled by the locking pin or locking member.

[0094] 7. The bushing can facilitate sliding between the slider bracket and the base bracket, and the hole in the bushing allows the locking pin or locking member to pass through the bushing to realize locking and unlocking.

[0095] 8. By providing a recess in the base bracket, the slider bracket and the base bracket can be directly unlocked by applying a force exceeding a threshold value, and other unlocking structures can be omitted, resulting in a simple structure.

[0096] 9. The cooperation of the cam and the protrusion ensures stable locking and unlocking of the slider bracket and the base bracket without providing excessive resistance to the rotation of the support leg, and the specific positions of locking and unlocking can be adjusted as needed.

[0097] 10. By arranging the limiting part, the movement range of the locking member is limited, so that the unlocking and locking process between the slider bracket and the base bracket is more stable and the shaking of the locking member is avoided.

[0098] 11. The elastic or restoring member allows the locking pin or locking member to move spontaneously towards the locked position, so that no additional manipulation of the locking pin or locking member is required during the locking process.

[0099] 12. By arranging the receiving groove, the supporting leg will not protrude from the base after being folded, which can save space.

[0100] 13. By arranging the conversion structure, the rotation and translation of the support legs and the unlocking of the locking member can be consolidated into one process, thereby reducing the number of work processes.

[0101] 14. When the support legs of the present invention are extended and rotated outward (deployed) at a predetermined position, they can be locked well. Furthermore, when the support legs are contracted and folded, they can be contracted and folded conveniently and quickly.

[0102] 15. By providing the locking structure of the present invention, when the support leg is extended and rotated to a predetermined position, the support leg can be well locked, and the support leg can be prevented from suddenly retreating due to poor locking caused by the impact of an external force, thereby ensuring the supporting effect and stability of the support leg. When the support leg is contracted and folded, the support leg can be stored by simply rotating the support leg without any other action, improving the convenience of operating the child seat. The operation of folding and unfolding the support leg is convenient and reliable.

[0103] 16. The driving member can realize a buffer function for the deployment of the support legs, and can not only prevent the support legs from suddenly flying out and hitting the user or being damaged by impact, but also can lock and unlock the slider bracket and the base bracket.

[0104] 17. The buffer device can reduce the noise and vibration caused by the deployment of the support legs.

[0105] Other embodiments of the present invention will be readily apparent to those skilled in the art after studying this specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application in accordance with the general principles of the present disclosure, including known or conventional technical means in the art that are not disclosed herein. It is intended that the specification and embodiments be considered as exemplary only, with a true scope and spirit of the present invention being indicated by the following claims.

[0106] The present invention has been described with reference to exemplary embodiments, but the terms used are exemplary and illustrative, not limiting. Since the present application can be embodied in various forms without departing from the spirit and nature of the present application, it is therefore understood that the above-described embodiments are not limited to the details described above, but are to be broadly interpreted as defined by the claims, and all modifications that fall within the scope of the claims or their equivalents are to be covered by the claims. [Explanation of symbols]

[0107] 1 Base Assembly 10 Base 11 Base top cover 12 Base bottom cover 121 Buffer 122 Fixed axis 13 Decorative Cover 160 Base bracket 161 Rock Hall 162 Recess 170 Receiving groove 180 Locking member 20 Support legs 210 First Section 210a Rotation support part 220 Second Section 230 Pivot 30 Slider 340 Slider bracket 341 Slider groove 342a Slider Rod 342 Rock Hall 343 Fixed part 344 Arc-shaped groove 350 Restoration Materials 350a Elastic member 360 Driving member 361 First end 362 Second End 60 Transformation Structure 610 End 620 Pivot part 630 Link member 80 Unlocking member 810 Cam 811 Push protrusion 90 Locking member 910 Bush 910' Bush half 911 Positioning Arm 911a Circular rib 912 Hook 920 Elastic members 920a Reset member 930 Lock pin 930a Locking member 931 Through hole 940 Arm section 941 Convex 942 Lock Section 943 Restrictions 950 Fixed Cover 950a Mounting seat 951 Chamber 960 Fixed seat

Claims

1. A base assembly including a base, a support leg, a slider, and a locking member, The slider is slidably disposed on the base, and the support legs are rotatably connected to the slider and extend and retract together with the slider; The locking member is used to lock the slider to the base. A base assembly comprising:

2. The slider includes a slider bracket, the base includes a base bracket, and the slider bracket is sleeved to the base bracket and is slidable relative to the base bracket. The base assembly of claim 1 .

3. The base assembly further includes an unlocking member, the unlocking member being configured to release the lock between the slider and the base in response to rotation of the support leg in a first direction relative to the slider. The base assembly of claim 2 .

4. The locking member and the unlocking member are disposed on the slider, and the unlocking member is connected to the support leg. The base assembly of claim 3 .

5. A bush is provided between the slider bracket and the base bracket.

5. The base assembly according to claim 2, wherein the base assembly is a flat plate.

6. The bushing is formed by two plastic blocks abutting against each other. The base assembly of claim 5 .

7. The bush is provided with an annular rib, and the slider is provided with a slider groove, the annular rib is located on a side surface of the bush, and the annular rib extends into the slider groove.

7. The base assembly according to claim 5 or 6.

8. The bush is provided with hooks, the hooks being located at the front and rear ends of the bush, and the hooks are engaged with the slider. The base assembly according to any one of claims 5 to 7.

9. The locking member includes a locking pin, the slider bracket has a locking hole, and the base bracket has another locking hole, and the locking pin passes through the locking hole and the other locking hole to lock the slider bracket to the base bracket. The base assembly according to any one of claims 5 to 8.

10. The bushing is attached to the slider bracket for movement therewith, the bushing having an aperture formed therein through which the locking pin passes. The base assembly of claim 9 .

11. The base assembly includes a reset member, the reset member applying pressure to the lock member in a direction away from the lock hole.

11. A base assembly according to claim 9 or 10.

12. The locking member includes a locking pin, a locking hole is formed in the slider bracket, and a recess is formed in the base bracket, and the locking pin passes through the locking hole and enters the recess to lock the slider bracket to the base bracket. A base assembly according to any one of claims 2 to 11.

13. The locking member includes an arm portion, the locking pin is formed at a first end of the arm portion, the second end of the arm portion is rotatably connected to the slider bracket, and a protrusion is formed between the first end and the second end of the arm portion. A base assembly according to any one of claims 9 to 12.

14. When the support leg rotates from a folded position to an unfolded position, the support leg presses against the second end. The base assembly of claim 13 .

15. The locking member has a through hole passing through the first end, and the first end is formed with a resilient barb to prevent the first end from being disengaged from the locking member.

15. A base assembly according to claim 13 or 14.

16. The locking member includes a cam, and a push protrusion protruding from the cam is formed on the cam. When the support leg rotates in the first direction relative to the slider, the push protrusion actuates the protrusion so that the locking member rotates in the first direction relative to the second end, releasing the lock between the slider bracket and the base bracket. The base assembly according to any one of claims 13 to 15.

17. A limiting portion is formed between the first end and the second end of the arm portion, and a moving distance of the limiting portion relative to the slider bracket is limited. The base assembly according to any one of claims 13 to 16.

18. An arc-shaped groove is formed in the slider bracket, a hole is formed in the limiting portion, a pin passes through the limiting portion and the arc-shaped groove, and the pin is movable within the range of the arc-shaped groove. The base assembly of claim 17 .

19. The locking member includes an elastic member that applies a force directing the locking pin toward the locking hole. A base assembly according to any one of claims 9 to 18.

20. The first direction is a clockwise or counterclockwise direction, the unlocking member and the support leg have the same rotation axis, and the base further includes a receiving groove in which the support leg is accommodated by rotating along the first direction and sliding toward the base together with the slider. A base assembly according to any one of claims 3 to 19.

21. The base assembly further includes a translation structure connected to the base and the slider, the translation structure applying a force to orient the slider toward the base in response to rotation of the support leg relative to the slider in the first direction. A base assembly according to any one of claims 3 to 20.

22. The transformation structure includes a plurality of "X" shaped units rotatably connected to each other. The base assembly of claim 21 .

23. The locking member includes a fixed cover, a fixed sheet, and an elastic member. The interior of the fixed cover is formed as a chamber. The elastic member is disposed in the chamber. The locking pin is at least partially disposed in the chamber. A base assembly according to any one of claims 12 to 22.

24. The slider bracket includes a fixing portion to which the fixed sheet is detachably fixed. The base assembly of claim 23.

25. An opening is formed at the bottom end of the fixed cover, and the elastic member applies a force to the lock pin tending to partially push the lock pin out of the opening.

25. A base assembly according to claim 23 or 24.

26. The chamber is formed in a cylindrical shape. The base assembly according to any one of claims 23 to 25.

27. Further comprising a drive member, A locking member is responsive to rotation of the support leg, the drive member is connected to the support leg, and the slider locks or unlocks from the base. A base assembly according to any one of claims 1 to 26.

28. the locking member is disposed on the slider, the base includes a locking hole, the locking member is inserted into the locking hole to lock the slider to the base; The drive member includes a first end and a second end. the first end is connected to the locking member; When the support leg rotates to a certain angle, the second end abuts against the support leg.

28. The base assembly of claim 27.

29. The driving member is a torsion spring and is disposed on the slider.

29. A base assembly according to claim 27 or 28.

30. The slider includes a pivot about which the support leg rotates, and the drive member is sleeved on the pivot. A base assembly according to any one of claims 3 to 29.

31. The base includes a base upper cover and a base lower cover, a buffer is disposed on the base lower cover, and when the slider moves toward the front of the base, the slider abuts against the buffer. A base assembly according to any one of claims 1 to 30.

32. The buffer is formed as a buffer rib, and the buffer rib has elasticity and is suspended from the base under cover. The base assembly of claim 31 .

33. The support leg has a rotation support, the end of which is rotatably sleeved on the pivot. A base assembly according to any one of claims 30 to 32.

34. When the support leg rotates, the rotation support presses against the second end, biasing the first end against the locking member.

34. The base assembly of claim 33.

35. The locking member has a tendency to move in an insertion direction into the locking hole when the pressure applied to the locking member by the first end is greater than the pressure applied to the locking member by the reset member.

35. The base assembly of claim 34.

36. The locking member has a tendency to move in a direction away from the locking hole when the pressure applied to the locking member by the first end is smaller than the pressure applied to the locking member by the reset member.

36. A base assembly according to claim 34 or 35.

37. 1. A child seat comprising: a base assembly; and a seat disposed on the base assembly, The base assembly is a base assembly according to any one of claims 1 to 36. A child seat characterized by the above.

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