Base assembly and child seat

Abstract

We provide a child car seat that is easy and convenient to operate, including a base assembly and a seat positioned within the base assembly. [Solution] The base assembly includes a base, support legs (20), a slider (30), and a locking member. The base includes a base bracket (160), the slider includes a slider bracket (340), the slider bracket is slidably positioned on the base bracket, the support legs are rotatably connected to the slider and extend and retract with the slider, and the locking member is used to lock the slider to the base bracket.

Description

Technical Field

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

Background Art

[0002] Child seats have become an important carrier for children when going out. To enhance their stability and safety in use, support legs are installed on the base. When in use, the support legs are deployed and contact the ground, enabling good support for the child seat and preventing it from tipping over. When not in use, the support legs can be folded to the bottom of the base to reduce the occupied volume.

[0003] To reduce the occupied volume, the support legs can be set to be rotatable and slidable relative to the base. For more convenient operation, when the support legs are rotated, it is necessary to release the slide of the support legs. However, currently, the rotation and slide structure of the support legs are complex, and the user experience is not good.

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 is disposed slidably on the base. The support leg is rotatably connected to the slider and expands and contracts with the slider. The locking member is 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 driving member, and a locking structure. The slider is disposed slidably 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 responds to the rotation of the support leg. The driving member is connected to the support leg. The slider is locked to the base or unlocked from the base.

[0006] In another embodiment, the present invention provides a child seat including a base assembly and a seat positioned on the base assembly. [Brief explanation of the drawing]

[0007] By considering the following detailed description of preferred embodiments of the present invention with reference to the attached drawings, various purposes, features, and advantages of the present invention will become clearer. The drawings are illustrative only and do not need to be drawn to scale. In the drawings, the same reference numerals represent the same or similar parts.

[0008] [Figure 1] This is a perspective view of the base assembly in the present invention. [Figure 2] This is a perspective view of a base assembly in the present invention, in which some of the components for displaying the internal structure are not shown. [Figure 3] This is an enlarged view of part A of Figure 2. [Figure 4] This is a partial plan view of the base assembly, which does not show some of the components for displaying the internal structure of the present invention. [Figure 5] Figure 4 is a cross-sectional view showing the slider in the locked position along line CC. [Figure 6] Figure 4 is a cross-sectional view showing the slider in the unlocked state along line CC. [Figure 7] Figure 4 is a cross-sectional view showing the slider in the locked position along line BB. [Figure 8] Figure 4 is a cross-sectional view showing the slider in the unlocked state along line BB. [Figure 9] This is a partial cross-sectional view of a base assembly having a lock release member (not shown) according to the present invention. [Figure 10] This is a perspective view of the two locking members of the base assembly in the present invention. [Figure 11] This is a perspective view of the bottom of the base assembly in the present invention. [Figure 12] This is a partial perspective view of a base assembly, in which some of the components for displaying the internal structure according to another embodiment of the present invention are not shown. [Figure 13] This is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. [Figure 14] This is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. [Figure 15] This is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. [Figure 16] This is a partial perspective view of a base assembly according to another embodiment of the present invention. [Figure 17] This is a partial cross-sectional view of a base assembly in which the slider according to another embodiment of the present invention is in the locked position. [Figure 18] This is a partial cross-sectional view of a base assembly in which the slider according to another embodiment of the present invention is in the unlocked state. [Figure 19] This is a perspective view of the base assembly in the deployed position of the support legs according to the present invention. [Figure 20] This is a perspective view of the base assembly in which the support legs of the present invention are in the folded position. [Figure 21] This is a perspective view of the base assembly showing the internal structure of the base assembly with some of the components removed. [Figure 22] This is a partial perspective view of the internal structure of the base assembly in which the locking member covers the lock hole in the present invention. [Figure 23] This is a partial perspective view from another angle of the internal structure of the base assembly in which the locking member of the present invention is disengaged from the locking hole. [Figure 24] This is a partial perspective view from another angle of the internal structure of the base assembly in which the locking member covers the lock hole in the present invention. [Figure 25] This is a partial cross-sectional view of the base assembly in the present invention, showing the support legs approaching the deployed position. [Figure 26]It is a partial cross-sectional view of a base assembly having support legs close to the folding position in the invention of the present application. [Figure 27] It is a partial cross-sectional view of a base assembly in which the lock member in the invention of the present application is not inserted into the lock hole. [Figure 28] It is a partial cross-sectional view of a base assembly in which the lock member in the invention of the present application is inserted into the lock hole. [Figure 29] It is a partial perspective view of the internal structure of the base assembly in the invention of the present application. [Figure 30] It is a partial perspective view of the internal structure of the base assembly in the invention of the present application. [Figure 31] It is a partial perspective view of the internal structure of the base assembly in the invention of the present application. [Figure 32] It is a perspective view of the bush of the base assembly in the invention of the present application. [Figure 33] It is a perspective view of a part of the bush of the base assembly in the invention of the present application.

Embodiments for Carrying out the Invention

[0009] For a clearer explanation of the overall concept of the invention of the present application, a detailed description will be given in an exemplary manner in relation to the drawings of the specification.

[0010] For the ease of a complete understanding of the invention of the present application, many specific details are described in the following description. However, since the invention of the present application can also be implemented in ways other than those described in this specification, it should be noted that the protection scope of the invention of the present application is not limited by the specific embodiments disclosed below.

[0011] Furthermore, in this specification, terms such as “center,” “top,” “bottom,” “front,” “rear,” “left side,” “right side,” “vertical,” “horizontal,” “top,” “bottom,” “internal,” “external,” “axial,” “radial,” and “circumferential” are used merely to facilitate and simplify the explanation, and are not intended to indicate or imply that the device or component must be constructed and operate in a particular direction or manner, and should be understood as indicating directions or positional relationships based on the accompanying drawings, and should not be interpreted as limitations to this specification.

[0012] In this application, unless otherwise explicitly stated and limited, terms such as “attachment,” “joining,” “connection,” and “fixing” should be understood broadly, and may refer to, for example, a fixed connection, a removable connection, or an overall connection. It may be a direct connection, an indirect connection via an intermediate medium, an internal connection between two components, or an interrelationship between two components. However, indicating a direct connection means that the connection between two bodies is formed solely by a connecting structure, rather than by a transition structure. The specific meaning of the above terms in this specification can be understood on a case-by-case basis by those skilled in the art.

[0013] In this application, “above” or “below” a second feature of a first feature may refer to indirect contact between the first feature and the second feature via an intermediate medium, unless otherwise explicitly specified and defined. In this specification, the explanation of reference terms such as “one embodiment,” “several embodiments,” “example,” “specific example,” and “several examples” means that a particular feature, structure, material, or property described in relation to an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the above-mentioned schematic expressions of terms are not required for the same embodiment or embodiment. Furthermore, the particular features, structure, material, or property 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 seat including the base assembly 1. The child seat can be installed in the seat of a car in which a baby or child is riding to ensure the safety of the passenger.

[0015] The first embodiment of the present invention will be described below.

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

[0017] Referring to Figures 1-3, a child seat may have a base assembly 1 and a seat (not shown). The base assembly 1 may have a base 10, support legs 20, sliders 30, and locking members 90. The seat is rotatably positioned 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 can be applied, for example, to older children, and the rearward position can be applied, for example, to younger babies, but the present invention is not limited thereto.

[0018] The support legs 20 are rotatably and retractably 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 in use, they can extend from the base 10 and flip outwards to contact the ground, thereby preventing the child seat from tipping over during a collision. When the support legs 20 are not in use, they can rotate synchronously and retract into the bottom of the base 10. This allows the overall size of the child seat to be reduced, making it easier to store and use.

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

[0020] The support leg 20 may include a first section 210 and a second section 220. The first section 210 and the second section 220 may form a sleeve-like structure, and the second section 220 may be located inside the first section 210 and can move relative to the first section 210 to extend 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 may be sleeved to the base bracket 160. The base bracket 160 and the slider bracket 340 may each be formed symmetrically on both sides of the base assembly 1, but the present invention is not limited thereto. A slider groove 341 may be placed on the slider bracket 340 to limit the distance the slider bracket 340 travels relative to the base bracket 160, for example by a pin. Alternatively, the slider groove 341 may be formed in the base bracket 160. A restoring member 350 may be formed between the base bracket 160 and the slider bracket 340. The restoring member 350 can apply force to the slider bracket 340 to move it in a direction extending outward from the base assembly 1.

[0022] The bushing 910 can be positioned between the base bracket 160 and the slider bracket 340. The bushing 910 enables smooth sliding between the base bracket 160 and the slider bracket 340. The bushing 910 can be attached to the slider bracket 340 to move with the slider bracket 340.

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

[0024] The base assembly 1 may also include a release member 80 (as shown in Figures 7 and 8). The release member 80 can release the locking member 90 from the slider bracket and the base bracket in response to the rotation of the support leg 20 relative to the slider 30 in a first direction. The first direction may be either clockwise or counterclockwise. As shown in Figure 5, the first direction may be counterclockwise. When viewed from the opposite side of the line of sight shown in Figure 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 can be 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 axis of rotation.

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

[0027] The bush 910 may have a positioning arm 911. The positioning arm 911 extends almost vertically upward from the body of the bush 910 and curves at its end to a nearly horizontal portion. The elastic member 920 can be fixed below the end of the positioning arm 911 to continuously apply a constant force to the lock 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 the rest of the locking member 90 and can apply force to the locking pin 930 toward the locking hole 342. That is, as shown in Figure 5, the elastic member 920 applies a downward force to the locking pin 930, and when the holes in the locking hole 342, locking hole 161, and bushing 910 are aligned with each other, the locking pin 930 can automatically move downward and pass through the holes in the locking hole 342, locking hole 161, and bushing 910. Alternatively, if the bushing 910 does not cover the area around the locking hole 342, the bushing 910 does not need to have a hole.

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

[0030] Referring to Figure 7, the unlocking member 80 may include a cam 810. A push projection 811 projecting radially from the cam 810 may be formed on the cam 810. The cam 810 may have a small radius at the top of the push projection 811 so that the top of the cam 810 does not press against the protrusion 941 when the cam 810 rotates. The cam 810 may have a large radius at the bottom of the push projection 811 so that the bottom of the cam 810 presses against the protrusion 941 when the cam 810 rotates.

[0031] When the support leg 20 rotates in the first direction relative to the slider 30, the push projection 811 acts on the projection so that the locking member 90 rotates in the first direction relative to the second end, thereby releasing the lock between the slider bracket 340 and the base bracket 160.

[0032] Specifically, as shown in Figures 6 to 8, when the support leg 20 and the unlocking member 80 are rotated counterclockwise until the push projection 811 contacts the protrusion 941, the push projection 811 activates the protrusion 941, causing the unlocking member 90 to rotate counterclockwise around its left end, moving the lock pin 930 upward and unlocking the slider bracket 340 from the base bracket 160. In other words, after the support leg 20 has rotated to the angle corresponding to the push projection 811, the lock pin 930 is held 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 Figures 12 and 13). The specific structure and operation procedure of the conversion structure 60 will be described in detail below.

[0034] Referring to Figures 9 and 10, a limiting portion 943 can be formed between both ends of the arm portion 940. The distance the limiting portion 943 moves relative to the slider bracket 340 may be restricted. For example, referring to Figures 5 and 9, an arc-shaped groove 344 can be formed in the slider bracket 340, and a hole can be formed in the limiting portion 943. The pin can pass 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 (the present invention is not limited thereto, and other methods of restricting movement can be used).

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

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

[0037] To achieve extension and retraction locking when the support leg 20 is in the operating position, positioning protrusions / recesses are provided on the upper cover of the slider 30, and positioning recesses / protrusions corresponding to the base 10 are provided to enable concave / convex matching. Therefore, when the slider 30 extends, the protrusions engage with the recesses, instructing the operator that the slider 30 extends to a predetermined position and prevents it from extending further.

[0038] Figure 11 is a bottom perspective view of the base assembly in the present invention. Referring to Figure 11, the base 10 may further include a receiving groove 170. When the support legs 20 are folded, the folded support legs 20 can be accommodated in the receiving groove 170 so that they do not protrude from the bottom surface of the base 10, or 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, or it may be engaged to lock one end of the support leg 20 in the receiving groove 170. The locking member 180 can prevent the support leg 20 from accidentally turning to the unfolded position.

[0039] Figure 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. Figure 13 is a partial cross-sectional view of a base assembly according to another embodiment of the present invention. To avoid duplication, only the differences between this embodiment and the previous embodiment will be described below.

[0040] Referring to Figures 12 and 13, the base assembly 1 may further include a conversion structure 60. The conversion structure 60 can connect the base 10 and the slider 30 at both ends, respectively, so as to apply force to the slider 30 toward the base 10 in response to the support leg 20 rotating toward the slider 30 in a first direction. The conversion structure 60 can be connected directly or indirectly to the base 10 and the slider 30. The conversion structure 60 may have, for example, a telescopic structure (shown in Figure 12) formed by a plurality of rods that rotate toward each other to form a plurality of "X" shaped units. The conversion structure 60 can 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 another drive member). When the support leg 20 rotates in the first direction, the link member 630 acts on the conversion structure 60 by winding around the unlocking member 80, shortening the conversion structure 60, thereby acting the slider 30 and the support leg 20 together toward the base, and shortening the front-to-back size of the base assembly 1. When the support leg 20 rotates in the first direction, the force with which the link member 630 acts on the slider 30 becomes greater than the force required for the lock pin 930 to disengage from the recess 162 (see Figures 5 and 6), unlocking the slider bracket 340 from the base bracket 160.

[0041] As described above, the process of shortening the conversion structure 60 can be realized by forming two ends 610 and a pivot portion 620 on the conversion structure 60, as shown in Figure 12. The two ends 610 and the pivot portion 620 are slidably connected to the front of the slider bracket 340. Specifically, the two ends 610 are restricted in the front-rear direction and slidable almost entirely in the left-right direction. The pivot portion 620 is restricted in the left-right direction and slidable in the front-rear direction. A link member 630 is connected to the pivot portion 620. When the support leg 20 rotates in the first direction, the link member 630 pulls the pivot portion 620 forward (to the left in Figure 13), moving the pivot portion 620 forward. Because the forward movement of the two ends 610 is restricted, the distance between the pivot portion 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 (for example, clockwise in Figure 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 that extends the base assembly 1 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 fixed directly or indirectly to the base bracket 160, thereby extending the conversion structure 60.

[0043] Therefore, in this embodiment, the support legs 20 can be folded or unfolded simply by rotating them, the slider 30 can be moved, and the slider bracket 340 can be fixed or unfixed to the base bracket 160. In other words, the folding or unfolding of the entire base assembly 1 can be done in only one operating step. The transformation structure 60 is not limited to the form shown in Figures 12 and 13, and can have various forms.

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

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

[0046] The recess 162 can be formed such that when the slider bracket 340 is pressed against the base bracket 160 with a force exceeding a threshold, the lock pin 930 disengages from the recess 162, thereby 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 lock pin 930 can be shaped to coincide with the spherical groove so that the spherical groove functions as a guide when the lock pin 930 is pressed. The recess 162 may also be formed in a different shape, and it is understood that the present invention is not limited thereto.

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

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

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

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

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

[0053] The elastic member 920 is positioned within the chamber 951 and contacts the upper part of the lock pin 930, thereby holding 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 at both ends to the base 10 and the slider 30, respectively, and can apply force to the slider 30 toward the base 10 in response to the rotation of the support leg 20 relative to the slider 30 in a first direction (e.g., counterclockwise in Figure 13). The conversion structure 60 can be connected directly or indirectly to the base 10 and the slider 30. The conversion structure 60 may have, for example, a telescopic structure (shown in Figure 12) formed by a plurality of rods that rotate toward each other to form a plurality of "X" shaped units. The conversion structure 60 can 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 another drive member). When the support leg 20 rotates in the first direction, the link member 630 acts on the conversion structure 60 by winding around the unlocking member 80, shortening the conversion structure 60, thereby acting the slider 30 and the support leg 20 together toward the base, and shortening the front-rear size of the base assembly 1 (the expansion and contraction processes of the conversion structure 60 can be seen from previous embodiments). When the support leg 20 rotates in the first direction, the force with which the link member 630 acts on the slider 30 becomes greater than the force required for the locking pin 930 to disengage from the recess 162, thereby 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 (for example, clockwise in Figure 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 that extends the base assembly 1 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 fixed directly or indirectly to the base bracket 160, so that the conversion structure 60 extends.

[0056] Therefore, in this embodiment, the support legs 20 can be folded or unfolded simply by rotating them, and the slider 30 can be moved to fix or unfix it to the base bracket 160 via the slider bracket 340. In other words, folding or unfolding the entire base assembly 1 can be done in just one operating step.

[0057] As the support leg 20 rotates, the link member 630 pulls the conversion structure 60, shortening it and thereby pulling the slider 30 and support leg 20 together toward the base, reducing the front-to-back size of the base assembly 1. 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. In other words, in this embodiment, the support leg 20 can be folded or unfolded simply by rotating it, and the slider 30 can be moved to release the slider bracket 340 from the base bracket 160. In this way, folding or unfolding the entire base assembly 1 can be done in only one operating step.

[0058] The present invention also provides a base assembly and child seat that have a secure locking effect by supporting support legs and are easy to deploy 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 the seat of a car in which a baby or child is riding to ensure the safety of the passenger.

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

[0060] Referring to Figures 19-22, a child seat may have a base assembly 1 and a seat (not shown). The base assembly 1 may have a base 10, support legs 20, a slider 30, a drive member 360, and a locking structure. The seat is rotatably positioned 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 can be applied, for example, to older children, and the rearward position can be applied, for example, to younger babies, but the present invention is not limited thereto.

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

[0062] The base 10 may include an upper base cover 11, a lower base cover 12, and a decorative cover 13. The upper base cover 11 and the lower base 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 front of the joined upper base cover 11 and lower base cover 12, and this recess allows the slider 30 to extend and retract relative to the base 10. The decorative cover 13 is positioned in the recess and moves with the slider 30. The decorative cover 13 can shield 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 upper base cover 11 and the lower base 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 a 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 can 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 drive 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 onto the base bracket 160. The base bracket 160 and the slider bracket 340 can each 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 positioned on the slider bracket 340 to limit the distance the slider bracket 34 travels relative to the base bracket 160, for example, by a slider rod 342a (see Figures 31 and 32). The slider rod 342a may be a pin. Alternatively, the slider groove 341 may be formed in the base bracket 160. Both ends of the elastic member 350a may be connected to impart an elastic force between the base 10 and the slider bracket 340. Specifically, both ends of the elastic member 350a may 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 cover 11 and the slider bracket 340. The elastic member 350a can apply force to the slider bracket 340 so that it moves in a direction extending from the base assembly 1, thereby enabling automatic extension of the slider bracket 340.

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

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

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

[0068] Referring to Figure 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 is then bent inward to form a certain space (chute). This space can be used to accommodate the mounting seat 950a.

[0069] Alternatively, a reset member 920a may be positioned below the locking member 930a (as shown in Figure 27). Or, the reset member 920a may be 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 locking member 930a. The reset member 920a can apply pressure to the locking member 930a in a direction that disengages the locking member 930a from the lock hole 161 (i.e., upward in Figure 27). The reset member 920a achieves an automatic unlocking function by continuously applying pressure to the locking member 930a. The reset member 920a may be a helical spring, but the present invention is not limited thereto.

[0070] Referring to Figures 23 and 24, the locking structure may include a drive member 360. The drive member 360 is positioned between the base cover 11 and the base bracket 160 (as shown in Figure 20). The drive member 360 may be a torsion spring and is provided at the front of the slider 30. Specifically, the drive member 360 may be sleeved to the pivot 230. The drive member 360 may include a first end 361 and a second end 362. The first end 361 may be connected to the locking member 930a. The second end 362 abuts against the support leg 20. The support leg 20 may have a rotatable support portion 210a. One end of the rotatable support portion 210a is sleeved to the pivot 230 and can rotate around the pivot 230. When the support leg 20 extends, the rotatable support portion 210a is pressed against the second end 362 to provide a buffering effect.

[0071] The first end portion 361 extends and passes through the mounting seat 950a and the locking member 930a. The locking member 930a may have a through hole 931 (shown in Figures 26 and 27) through which the first end portion 361 passes. The through hole 931 may be formed in an elongated shape, that is, it may extend for a certain length in the vertical direction. In addition, the first end portion 361 may have an elastic barb formed thereon that has a vertical size slightly larger than the size of the through hole 931. Furthermore, when the first end portion 361 passes through the through hole 931, it may fold back to form a U-shaped elastic barb, or the elastic barb may be formed first before the first end portion 361 passes through the through hole 931, then the elastic barb may be pressed to elastically deform it so that it passes through the through hole 931, and then the pressure on the elastic barb may be released to prevent the elastic barb from detaching from the through hole 931. After the first end portion 361 passes through the through-hole 931, the elastic barb is blocked by the through-hole 931 and cannot detach from it. Alternatively, the first end portion 361 may be formed as another structure to prevent detachment from the through-hole 931.

[0072] When the support leg 20 rotates, the second end 362 is pressed by the rotating support part 210a, thereby causing the second end 362 to press against the first end relative to the locking member 930a. The rotating support part 210a can press against the second end 362 when the support leg 20 rotates at a certain angle from the folded position to the unfolded position. For example, this angle may include 60° from the folded position. Alternatively, this angle may include angles such as 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, or 90° 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 open, that is, when the support leg 20 has rotated by an angle in the range of 87° to 90° from the folded position to the unfolded position.

[0073] As the support leg 20 rotates from the folded position to the unfolded position, the rotating support part 210a pushes the second end 362 upward, causing the first end 361 to move downward. When the pressure applied to the locking member 930a by the first end 361 becomes greater than the pressure applied to the locking member 930a by the reset member 920a, the locking member 930a tends to move downward (i.e., in the direction of insertion into the lock hole 161). At this time, if the locking member 930a is not aligned with the lock hole 161 (as shown in Figure 23), the locking member 930a will come into contact with the upper surface of the base bracket 160. As the slider 30 continues to move forward and the support leg 20 rotates further until the locking member 930a is aligned with the lock hole 161 (as shown in Figure 24), the locking 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 Figure 28).

[0074] The support legs 20 may be positioned to unfold automatically after unlocking. The support legs 20 may also be positioned to unfold manually. To achieve the locking function, the drive member 360 can provide a buffer to the support legs 20 when they are unfolded and apply pressure to the locking member 930a in response to the rotation of the support legs 20.

[0075] As the support leg 20 rotates from the extended position to the folded position, the pressure applied to the second end 362 by the rotating support 210a gradually decreases. Consequently, the pressure applied to the locking member 930a by the first end 361 also gradually decreases. When the pressure applied to the locking member 930a by the first end 361 becomes less than the pressure applied to the locking member 930a by the reset member 920a, the locking member 930a moves upward (i.e., away from the locking 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 Figures 23 and 24, the drive member 360 is symmetrical and has two first ends 361 and one second end 362. The two first ends 361 may each be connected to two locking members 930a. However, in other embodiments, the drive member 360 may have one first end 361 and one second end 362. For example, the base assembly 1 may have two symmetrically arranged drive members 360. Alternatively, the base assembly 1 may have one locking member 930a and one drive 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, and in response to the rotation of the support leg 20 from the folded position to the unfolded position, it applies a forward force (to the right in Figure 25) 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 a telescopic structure, such as a telescopic structure formed by a plurality of rods rotated toward each other to form a plurality of "X"-shaped units (as shown in Figures 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 process of shortening the conversion structure 60 described above may be implemented by forming two ends 610 and a pivot portion 620 on the conversion structure 60. Both the two ends 610 and the pivot portion 620 are slidably connected to the front of the slider bracket 340. Specifically, the two ends 610 are constrained in the front-rear direction and slidable almost entirely in the left-right direction, while the pivot portion 620 is constrained in the left-right direction and slidable in the front-rear direction. A link member is connected to the pivot portion 620. When the support leg 20 rotates from the folded position to the unfolded position, the link member pulls the pivot portion 620 forward (to the right in Figure 25), causing the pivot portion 620 to move forward. At this time, the movement of the two ends 610 forward of the base 10 is suppressed, so the distance between the pivot portion 620 and the two ends 610 is shortened, and the overall length of the conversion structure 60 is shortened.

[0079] When the support leg 20 rotates from the extended position to the folded position, the link member no longer exerts force on the conversion structure 60, and the flexible link member becomes relaxed. The slider bracket 340 moves rearward 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 since the rear end of the conversion structure 60 is fixed directly or indirectly to the base bracket 160, the conversion structure 60 is shortened.

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

[0081] The buffer 121 may be positioned on the base lower cover 12. The buffer 121 may be formed as a buffer rib. The buffer 121 may also be formed in other forms that have a buffering function. The buffer 121 may be formed of a material such as a soft adhesive or foam. The buffer rib may be elastic and suspended from the base lower cover 12. As the slider 30 moves toward the base 10, it comes into contact with the buffer 121 and is buffered. This prevents noise caused by the slider bracket 340 and / or bush 910 colliding with the base lower cover 12 when the support leg 20 is extended.

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

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

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

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

[0086] As shown in Figure 32, the bush 910 is made of a smooth, wear-resistant material such as plastic, ceramic, or metal, and is formed by contacting two pieces together. It is engaged onto the slider bracket 340 via front and rear hooks 912. Therefore, a good sliding clearance can be ensured between the bush 910 and the base bracket 160, ensuring smooth sliding and low noise. During assembly, the deformation of the hooks 912 allows for quick completion of assembly, making it convenient for production and assembly.

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

[0088] 1. In the present invention, by locking the slider and the base with a locking member, the support legs can be made to play a stable supporting role when deployed. In particular, during use, a child's foot may kick the slider intentionally or unintentionally. If the kicking force is too strong, the slider may retract into the base. The action of the locking member prevents the slider from retracting into the base, and the support legs will no longer be able to perform their supporting role, thus ensuring the support stability of the support legs and further ensuring the safety of using the child seat.

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

[0090] 3. The lock release member allows the slider bracket and base bracket to be released while the support leg is rotated, enabling rotation and translation of the support leg, and achieving the purpose of folding or unfolding the support leg in a single action.

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

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

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

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

[0095] 8. By providing a recess in the base bracket, the slider bracket and base bracket can be directly unlocked by applying a force exceeding a threshold, eliminating the need for other unlocking mechanisms and thus simplifying the structure.

[0096] 9. The cooperation between the cam and the protrusion ensures stable unlocking and unlocking of the slider bracket and base bracket, without applying excessive resistance to the rotation of the support leg, and allows for adjustment of the specific unlocking and unlocking positions as needed.

[0097] 10. By positioning the limiting element, the range of movement of the locking member is restricted, resulting in a more stable unlocking and locking process between the slider bracket and the base bracket, and preventing the locking member from shaking.

[0098] 11. The elastic member or restoring member allows the lock pin or lock member to move spontaneously toward the locked position, thus eliminating the need for additional operation of the lock pin or lock member during the locking process.

[0099] 12. By incorporating a receiving groove, the support legs do not protrude from the base after being folded, thus saving 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 combined into a single process, thereby reducing the number of work steps.

[0101] 14. When the support legs of the present invention are extended and rotated outward (unfolded) at a predetermined position, the lock can be effectively engaged. Furthermore, when the support legs are retracted and folded, they can be conveniently and quickly retracted and folded.

[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 securely locked, preventing the support leg from unexpectedly retracting due to lock failure caused by external force collision, thereby ensuring the support effect and stability of the support leg. When the support leg is retracted and folded, it can be stored simply by rotating the support leg without any other operation, improving the convenience of operation of the child seat. The folding and unfolding of the support leg is convenient and highly reliable.

[0103] 16. The drive member can provide a buffer function for the deployment of the support legs, preventing them from suddenly extending and hitting the user or being damaged by impact. It can also lock and unlock the slider bracket and the base bracket.

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

[0105] Other embodiments of the present invention will be readily conceivable to those skilled in the art after reviewing this specification and practicing the invention disclosed herein. This application is intended to cover all variations, uses, or adaptations of this application, including publicly known or prior art means in the art not disclosed herein, in accordance with the general principles of this disclosure. This specification and embodiments are illustrative only, and the true scope and spirit of the present invention are indicated by the claims of the present invention.

[0106] Although the present invention is described with reference to typical embodiments, the terminology used is illustrative and illustrative, not limiting. Since this application can be embodied in various forms without departing from the spirit and essence of this application, it is understood that the above-described embodiments are not limited to the details described herein but are to be interpreted broadly as defined by the claims, and that all variations falling within the scope of the claims or their equivalents are covered by the claims. [Explanation of Symbols]

[0107] 1 Base Assembly 10 base 11. Base top cover 12 Base lower cover 121 buffers 122 Fixed axis 13 Decorative cover 160 Base Bracket 161 Rock Hole 162 recess 170 receiving groove 180 Locking member 20 Support legs 210 Section 1 210a Rotating support part 220 Section 2 230 Pivot 30 Sliders 340 Slider Bracket 341 Slider groove 342a Slider Rod 342 Rock Holes 343 Fixed part 344 Arc-shaped groove 350 Restoration Members 350a Elastic member 360 Drive Member 361 First end 362 Second end 60 Conversion Structures 610 End 620 Pivot section 630 Link member 80. Lock release member 810 Cam 811 Push protrusion 90 Locking member 910 Bush 910' Half Bush 911 Positioning Arm 911a Annular rib 912 Hook 920 Elastic member 920a Reset component 930 Locking Pin 930a Locking member 931 Through hole 940 Arm section 941 Convex part 942 Lock section 943 Restriction section 950 Fixed cover 950a Mounting base 951 Chamber 960 Fixed Seat

Claims

1. A base assembly including a base, support legs, a slider, and a locking member, The slider is slidably positioned 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 characterized by the following features.

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

3. The base assembly further includes a release member, the release member which, in response to the support leg rotating in a first direction relative to the slider, the locking member releases the lock between the slider and the base. The base assembly according to claim 2, characterized in that it is as described above.

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

5. A bushing is provided between the slider bracket and the base bracket. The base assembly according to any one of claims 2 to 4.

6. The bush is formed by two plastic blocks coming into contact with each other. The base assembly according to claim 5, characterized in that it is as described above.

7. The bush is provided with an annular rib, the slider is provided with a slider groove, the annular rib is located on the side surface of the bush, and the annular rib extends into the slider groove. The base assembly according to claim 5 or 6, characterized in that it is as follows:

8. The bush is provided with hooks, which are located at the front and rear ends of the bush, and the hooks engage with the slider. The base assembly according to any one of claims 5 to 7, characterized by the features described herein.

9. The locking member includes a locking pin, a locking hole is provided in the slider bracket, and another locking hole is provided in the base bracket, 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 bush is attached to the slider bracket so as to move together with the slider bracket, and the bush has a hole formed therein for the lock pin to pass through. The base assembly according to feature 9.

11. The base assembly includes a reset member, which applies pressure to the locking member in a direction that causes the locking member to move away from the locking hole. The base assembly according to claim 9 or 10, characterized in that it is as follows:

12. The locking member includes a locking pin, a locking hole formed in the slider bracket, and a recess formed in the base bracket. The locking pin passes through the locking hole and enters the recess, locking the slider bracket to the base bracket. The 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 the first end of the arm portion, the second end of the arm portion is rotatably connected to the slider bracket, and the protrusion is formed between the first end and the second end of the arm portion. The base assembly according to any one of claims 9 to 12.

14. When the support leg rotates from the folded position to the unfolded position, the support leg presses against the second end. The base assembly according to claim 13, characterized in that it is as described above.

15. The locking member has a through hole through which the first end passes, and the first end has an elastic barb formed thereon to prevent the first end from coming off the locking member. The base assembly according to claim 13 or 14, characterized in that way.

16. The locking member includes a cam, and the cam has a push projection that protrudes from the cam. When the support leg rotates in the first direction relative to the slider, the push projection acts on 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, characterized in that it is the same as described in the previous claim.

17. A limiting portion is formed between the first end and the second end of the arm portion, and the distance that the limiting portion moves relative to the slider bracket is limited. The base assembly according to any one of claims 13 to 16, characterized in that it is a 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, the 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 according to claim 17, characterized by the features described above.

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

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

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

22. The conversion structure includes a plurality of "X" shaped units that are rotatably connected to one another. The base assembly according to claim 21, characterized by the features described above.

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

24. The slider bracket includes a fixing portion to which the fixing sheet is detachably secured. The base assembly according to claim 23, characterized in that it is as described above.

25. An opening is formed at the lower end of the fixed cover, and the elastic member applies a force to the lock pin that tends to partially push the lock pin out of the opening. The base assembly according to claim 23 or 24, characterized in that it is as described above.

26. The chamber is formed in a cylindrical shape. The base assembly according to any one of claims 23 to 25, characterized in that it is as described above.

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

28. The locking member is positioned on the slider, the base includes a locking hole, and 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 comes into contact with the support leg. The base assembly according to claim 27, characterized by the features described above.

29. The drive member is a torsion spring, and is positioned in the slider. The base assembly according to claim 27 or 28, characterized by the features described above.

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

31. The base includes an upper base cover and a lower base cover, and the buffer is positioned in the lower base cover, and when the slider moves toward the front of the base, the slider contacts the buffer. The base assembly according to any one of claims 1 to 30, characterized in that it is as described above.

32. The buffer is formed as a buffer rib, which is elastic and suspended from the base lower cover. The base assembly according to feature 31.

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

34. When the support leg rotates, the rotating support part presses against the second end, causing the first end to be offset relative to the locking member. The base assembly according to claim 33, characterized in that it is a feature of the present invention.

35. The locking member tends to move in the direction of insertion into the lock 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. The base assembly according to feature 34.

36. The locking member tends to move away from the lock hole when the pressure applied to the locking member by the first end is less than the pressure applied to the locking member by the reset member. The base assembly according to claim 34 or 35, characterized in that way.

37. A child car seat comprising a base assembly and a seat positioned on the base assembly, The base assembly is the base assembly described in any one of claims 1 to 36. A child car seat characterized by the following features.

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