Base assembly and vehicle child seat

Abstract

The present application discloses a base assembly (1) and a child seat for a vehicle. The base assembly (1) includes a base (10), a support leg (20), a slide element (30), and a traction element (40), the slide element (30) is telescopically provided on the base (10), the support leg (20) is pivotally connected to the slide element (30) so as to telescopically extend and retract together with the slide element (30) relative to the base (10), and the traction element (40) is configured to pull the support leg (20) to move toward the base (10) as the support leg (20) rotates from the unfolded position to the folded position. The base assembly (1) and the child seat provided by the present disclosure simplify the operation of the user, so that the operation is simple and convenient, and the user feels good when using the base assembly (1) and the child seat.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle child seats, and particularly to a base assembly and a vehicle child seat that are convenient to operate.

Background Art

[0002] Child seats are essential for children when going out. In conventional child seats, in order to enhance the stability and use safety of the child seat, a support leg structure is provided on the base. During use, the support leg structure is deployed to contact the ground, which can well support the child seat and prevent the child seat from tipping over. Also, when not in use, the support leg structure can be folded at the bottom of the base.

[0003] However, at the tip of the base of a child seat equipped with a support leg structure, a protrusion for attaching and pivotally connecting the support leg structure is usually provided. When there is no need to use the support legs, the protrusion not only, for example, has an adverse effect on the child's riding experience, but also increases the volume of the child seat and its transportation cost.

[0004] Conventional child seats with a telescopic support leg structure can solve the above problems, but in order to achieve the purpose of complete folding, there are two steps for folding and retracting, that is, it is necessary to fold the support leg structure and then push the support leg structure to contract the support leg structure. Such a folding operation of the support leg structure is complicated and the usability is also poor.

Summary of the Invention

[0005] The purpose of the present disclosure is to provide a base assembly and a vehicle child seat that are convenient to operate.

[0006] To achieve the above object, in one aspect, the present disclosure provides a base assembly including a base, a support leg, a slide element, and a traction element, wherein the slide element is telescopically provided on the base, the support leg is rotatably connected to the slide element so as to telescopically extend and retract with the slide element relative to the base, and the traction element is configured to pull the support leg and move it toward the base as the support leg pivots from the deployed position to the folded position.

[0007] In one embodiment, the traction element is a flexible element.

[0008] In one embodiment, the flexible element is a steel wire, a string, or a webbing.

[0009] In one embodiment, the base assembly further includes a driving element that rotates with the support leg, and the driving element is configured to wind up the traction element so that the support leg is pulled to move toward the base.

[0010] In one embodiment, the driving element is disposed on the support leg, and the driving element is integrally formed with the support leg, formed as a part of the support leg, or the driving element and the support leg are separately formed and fixedly connected to each other by a fixing structure.

[0011] In one embodiment, the driving element is located at the upper end of the support leg.

[0012] In one embodiment, the driving element has a boss shape, the driving element has an arc-shaped member where the traction element is located, or the driving element has a pulley shape, or the driving element has a cylindrical shape.

[0013] In one embodiment, the first end of the traction element is connected to the base, and the second end of the traction element is connected to one of the driving element and the upper end of the support leg.

[0014] In one embodiment, a fixing post is provided on the inner upper wall of the base, and the first end of the traction element is fixed to the fixing post via a first fastener.

[0015] In one embodiment, the base assembly further includes a stroke amplification mechanism, and the stroke amplification mechanism has a first end connected to the base and a second end connected to the support leg via the traction element.

[0016] In one embodiment, the stroke amplification mechanism is a rhombic telescopic frame.

[0017] In one embodiment, a fixed frame is disposed on the base, and the first end of the stroke amplification mechanism is connected to the fixed frame via a second fastener.

[0018] In one embodiment, the stroke amplification mechanism is a pulley mechanism.

[0019] In one embodiment, the pulley mechanism includes a movable pulley, a fixed pulley, and a link. The movable pulley is disposed on the slide element, the fixed pulley is disposed on the base, the link connects the movable pulley and the fixed pulley, and the first end of the traction element is connected to the movable pulley.

[0020] In one embodiment, the first end of the link is fixed to the slide element, and the second end of the link bypasses the movable pulley and the fixed pulley and is fixed to the slide element.

[0021] In one embodiment, the fixed pulley includes a first fixed pulley and a second fixed pulley that are symmetrically arranged, the link includes a first link and a second link that are symmetrically arranged, a first end of the first link is fixed to the slide element, a second end of the first link bypasses the movable pulley and the first fixed pulley and is fixed to the slide element, a first end of the second link is fixed to the slide element, and a second end of the second link bypasses the movable pulley and the second fixed pulley and is fixed to the slide element.

[0022] In one embodiment, the pulley mechanism includes a movable pulley, a first fixed pulley, a second fixed pulley, and a link. The movable pulley is arranged on the slide element. The first fixed pulley is arranged on the slide element, the second fixed pulley is arranged on the base, the link connects the first fixed pulley, the movable pulley, and the second fixed pulley, and the first end of the traction element is connected to the movable pulley.

[0023] In one embodiment, the base is provided with a positioning post, the slide element is provided with an avoidance groove for avoiding the positioning post, a first end of the link is fixed to the positioning post, and a second end of the link bypasses the first fixed pulley, the movable pulley, and the second fixed pulley and is fixed to the slide element.

[0024] In one embodiment, the slide element is provided with a slide groove for the movable pulley to slide.

[0025] In one embodiment, the base assembly includes a support leg indicator that interlocks with the second end of the stroke expansion mechanism, and the slide element is provided with an indication window for exposing at least a part of the support leg indicator.

[0026] In one embodiment, the buffer elastic element is arranged at the connection position between the second end of the traction element and the support leg.

[0027] In one embodiment, the base assembly further includes a base bracket disposed on the base, the slide element includes a slide bracket slidably connected to the base bracket, a slide groove is provided in one of the base bracket and the slide bracket, and a slide lever adapted to fit the slide groove is provided in the other of the base bracket and the slide bracket.

[0028] In another aspect, the present disclosure provides a child seat for a vehicle. The child seat includes the base assembly and a seat disposed on the base assembly.

[0029] In one embodiment, the seat is pivotally disposed on the base and has at least a forward position and a rearward position, the child seat has a first use mode and a second use mode, in the first use mode, the slide element extends outward, the support legs are deployed to form a ground support portion, and in the second use mode, the slide element retracts and the support legs are folded at the bottom of the base.

[0030] In one embodiment, a receiving groove for receiving the support legs is provided at the bottom of the base, and after the support legs are folded at the bottom of the base, the lower surface of the support legs does not protrude from the bottom surface of the base.

[0031] To achieve the above object, in one aspect, the present disclosure is a base assembly including a base, support legs, and a slide element, the support legs are provided with gears, the slide element is telescopically provided on the base and is provided with a rack, and the gears mesh with the rack such that the movement of the slide element to the extended position is interlocked with the rotation of the support legs to the deployed position, and the movement of the slide element to the retracted position is interlocked with the rotation of the support legs to the folded position.

[0032] In one embodiment, the base assembly further includes a conversion structure having a first end connected to the slide element and a second end connected to the base, the rack being fixed at a position between the first end and the second end, and the conversion structure being extended or shortened in response to an increase or decrease in the distance between the slide element and the base.

[0033] In one embodiment, the conversion structure is composed of at least one X-shaped unit.

[0034] In one embodiment, each of the at least one X-shaped unit is formed by two sheets rotatably connected to each other.

[0035] In one embodiment, the base assembly further includes a first recovery element configured to always bias the support leg to the deployed position.

[0036] In one embodiment, the base assembly further includes a second recovery element configured to always bias the slide element to the extended position.

[0037] In one embodiment, the second recovery element is a tension spring having one end fixed to the base and the other end fixed to the slide element.

[0038] In one embodiment, the base includes a locking element configured to operably lock the support leg in the folded position.

[0039] In one embodiment, the base includes a stepped portion, and when the support leg is in the folded position, the stepped portion abuts against the support leg to prevent the slide element from moving to the extended position.

[0040] In another aspect, the present application provides a child seat for a vehicle. The child seat includes the base assembly and a seat disposed on the base assembly.

Brief Description of the Drawings

[0041] Various objects, features, and advantages of the present disclosure will become more apparent by considering the following detailed description of the preferred embodiments of the present disclosure in connection with the accompanying drawings. The drawings are only exemplary drawings of the present disclosure and need not be drawn to scale. In the drawings, the same reference numerals represent the same or similar parts.

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Explanation of Reference Signs

[0042] 1 Base assembly 10 Base 110 Fixed post 120 Fixed frame 130 Turntable 150 Positioning post 160 Base bracket 161 Slide lever 170 Receiving groove 180 Locking element 190 Step portion 20 Support leg 210 First section 220 Second section 240 Connecting element 250 Protection cover 280 Locking hole 30 Slide element 310 Avoidance groove 320 Slide groove 330 Indicator window 340 Slide bracket 341 Slide groove 342 Support leg bracket 3421 Slide slot 350 Housing 351 Upper housing 352 Lower housing 360 Bush 40 Tension element 410 Buffer elastic element 420 Tension element position limiting groove 50 Driving element 510 Arc member 520 First restoring element 530 Second restoring element 540 Rack 550 Gear 60 Stroke amplification mechanism 610 Movable pulley 620 Fixed pulley 621 First fixed pulley 622 Second fixed pulley 630 Link 631 First link 632 Second link 70 Support leg indicator 80 Pivot 90 Conversion structure 910 First end 920 Second end 930 Connection part 2 Seat

Best Mode for Carrying Out the Invention

[0043] To more clearly explain the entire concept of the present disclosure, the following detailed description is given by way of example with reference to the drawings of the specification.

[0044] In the following description, it should be noted that many specific details are proposed in order to fully understand the present disclosure. However, the present disclosure can be implemented in other ways different from the methods described in this specification. Therefore, the protection scope of the present disclosure is not limited by the specific embodiments disclosed below.

[0045] In addition, in the description of the present disclosure, terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "up", "down", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. are merely for convenience in explaining and simplifying the present disclosure, and are merely for convenience in explaining and simplifying the present disclosure. They indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience in explaining and simplifying the present disclosure, and do not indicate or imply that the shown device or component must have a specific orientation or must be configured and operate in a specific orientation. Therefore, it should not be construed as limiting the present disclosure.

[0046] In the present disclosure, unless otherwise specified and limited, the terms "installation", "connection", "coupling", and "fixation" may, for example, be fixed, detachable, or integrated, may be directly connected or indirectly connected via an intermediate medium, and may also be the internal connection between two components or the interaction between two components, and should be understood in a broad sense. However, direct connection means that the two connected objects do not construct the connection relationship by an excessive structure, but only form an integrated part by the connection structure. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0047] In the present disclosure, unless otherwise specified and limited, a first feature that is "above" or "below" a second feature may be in direct contact between the first and second features, or may be in indirect contact between the first and second features via an intermediate medium. In the description of this specification, the description referring to the terms "one embodiment", "some embodiments", "an embodiment", "a specific example", or "some embodiments" means that the specific features, structures, materials, or characteristics described in relation to the embodiment or embodiments are included in at least one embodiment or embodiment of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or embodiment. Furthermore, the described specific features, structures, materials, or characteristics can be combined in any one or more embodiments or embodiments in an appropriate manner.

[0048] The present disclosure provides a vehicle child seat that is attached to a vehicle seat for a baby or child to sit on and can ensure the safety of the occupant.

[0049] Hereinafter, a first embodiment of the present disclosure will be described.

[0050] As shown in FIGS. 1 to 4, the child seat may include a base assembly 1 and a seat 2, and the base assembly 1 may include a base 10 and support legs 20. The seat 2 is rotatably disposed on the base 10 and has at least a front position and a rear position. The front position is a position where the seat 2 faces the front of the vehicle, and the rear position is a position where the seat 2 faces the rear of the vehicle. The front position may be applied to, for example, an older child, and the rear position may be applied to, for example, a younger child. However, the present disclosure is not limited thereto.

[0051] The support leg 20 is rotatably and telescopically connected to the base 10. When the support leg 20 is used, the support leg 20 extends from the base 10 and rotates to contact the ground (as shown in FIGS. 1 and 3), thereby preventing the child seat from tipping over during impact. When the support leg 20 is not required, the support leg 20 can be rotated and stored synchronously at the bottom of the base 10 (as shown in FIGS. 2 and 4), so that the overall size of the child seat can be reduced, which is convenient for storage and use.

[0052] Referring to FIGS. 5 to 9, the base assembly 1 can further include a slide element 30 and a traction element 40. The slide element 30 is telescopically arranged on the base 10, and the support leg 20 is rotatably connected to the slide element 30 and extends and contracts together with the slide element 30. The traction element 40 is configured to rotate the support leg 20 from the deployed position to the folded position, thereby pulling the support leg 20 and moving it towards the base 10. At this time, the slide element 30 moves towards the base 10 together with the support leg 20.

[0053] The base assembly 1 can further include a driving element 50 that rotates with the support leg 20. When the support leg 20 is folded, the driving element 50 winds up the traction element 40 and pulls the support leg 20 and the slide element 30 towards the base 10.

[0054] The traction element 40 is a flexible element such as a steel wire, a string, or a webbing, and the present disclosure is not limited thereto. One end of the traction element 40 is connected to the base 10, and the other end of the traction element 40 is connected to the support leg 20. Optionally, the other end of the traction element 40 is fixed to the upper end of the support leg 20.

[0055] The driving element 50 is arranged on the support leg 20. For example, the driving element 50 is arranged at the upper end of the support leg 20. The driving element 50 may be formed as an integral structure with the support leg 20 and formed as a part of the support leg 20. Optionally, the driving element 50 and the support leg 20 may be formed separately and connected and fixed to each other by a fixing structure.

[0056] The driving element 50 may be in the shape of a boss. In this embodiment, the driving element 50 includes an arc-shaped member 510 (see FIG. 5) that conforms to the traction element 40. Optionally, the driving element 50 may be formed as a pulley. Optionally, the driving element 50 may be column-shaped.

[0057] When the driving element 50 rotates together with the support leg 20, the traction element 40 surrounds the outer periphery of the driving element 50, so the other end of the traction element 40 pulls the upper end of the support leg 20, thereby causing the support leg 20 and the slide element 30 to move together toward the base 10. Optionally, the driving element 50 may have a shape other than an arc shape.

[0058] As shown in FIG. 5, the support leg 20 includes a first section 210 and a second section 220. The first section 210 and the second section 220 may be formed in a sleeve-like structure, the second section 220 may be disposed inside the first section 210, and may move relative to the first section 210 so as to extend or shorten the support leg 20.

[0059] Referring to FIGS. 5 to 6, when the support leg 20 rotates and folds, the second section 220 of the support leg 20 is pushed and retracted into the first section 210, and then the support leg 20 is pushed to the left and the support leg 20 rotates clockwise. When the support leg 20 rotates, the traction element 40 drives the support leg 20 and the slide element 30 to move toward the inside of the base 10, so the support leg 20 retracts inward while rotating. Finally, the slide element 30 may be moved to a position at least partially within the base 10 so that the slide element 30 does not protrude from the front of the base 10 or protrudes slightly. Thereby, the overall size of the child seat in the front-rear direction becomes even shorter.

[0060] Referring to FIG. 7, the base 10 may include a fixed frame 120 and a base bracket 160. The fixed frame 120 and the base bracket 160 can be used as carriers. A fixed post 110 is provided on the inner upper wall of the base 10, and the traction element 40 is fixed to the fixed post 110 by a first fastener.

[0061] The slide element 30 includes a slide bracket 340 slidably connected to the base bracket 160 and a housing 350 connected to the slide bracket 340. The housing 350 is connected and fixed to the slide bracket 340 by, for example, rivets. Referring to FIG. 24, a slide groove 341 is provided on one of the base bracket 160 and the slide bracket 340, and a slide lever 161 adapted to the slide groove 341 is provided on the other of the base bracket 160 and the slide bracket 340. In this embodiment, the slide groove 341 is provided on the slide bracket 340 and the slide lever 161 is provided on the base bracket 160, but the positions of the slide groove 341 and the slide lever 161 may be interchanged. The two slide levers 161 and the two slide grooves 341 may be symmetrically arranged. Specifically, in this embodiment, the slide groove 341 is provided on the slide bracket 340, the slide lever 161 is provided on the base bracket 160, and the slide lever 161 passes through the slide groove 341. It can be understood that the above structures of the base bracket 160, the slide bracket 340, the slide groove 341 and the slide lever 161 can also be applied to other embodiments.

[0062] A protective cover 250 is provided inside the housing 350. The pivot 80 (refer to FIGS. 10 and 13) passes through the slide bracket 340, a connecting element 240 for fixedly connecting the protective cover 250 and the support leg 20, and the driving element 50 to realize rotation. The protective cover 250 can rotate together with the support leg 20 to block the gap generated after the support leg 20 is folded and prevent injury.

[0063] The first restoring element 520 (e.g., a torsion spring) is disposed on the driving element 50 or in its vicinity, and can always bias the support leg 20 to the deployed state. In this way, the first restoring element 520 can assist the support leg 20 in being deployed. The second restoring element 530 (e.g., a tension spring) may be provided on the base 10. One end of the second restoring element 530 is connected to the slide bracket 340, and the other end of the second restoring element 530 is connected to the base 10. The second restoring element 530 automatically extends the support leg 20 and the slide element 30 forward to the front of the base assembly 1. The first restoring element 520 and the second restoring element 530 are optional but not essential. The number of the second restoring elements 530 may be one, two, or more, and is not limited in the present disclosure. The first restoring element 520 may be an elastic restoring element other than a torsion spring. The second restoring element 530 may be an elastic restoring element other than a tension spring.

[0064] Referring to FIGS. 7 to 9, the base 10 further includes a receiving groove 170. When the support leg 20 is folded, it is received in the receiving groove 170 so that the folded support leg 20 does not protrude from the bottom surface of the base 10 or protrudes slightly from the bottom surface of the base 10. The base 10 may further include a locking element 180. The locking element 180 is movably disposed on the lower surface of the base 10 and may be in the form of a push button that is engaged to lock one end of the support leg 20 folded in the receiving groove 170. The locking element 632 can prevent the support leg 20 from accidentally rotating to the deployed position.

[0065] The child seat has a first use mode in which the slide element 30 extends and the support leg 20 is deployed to form a ground support portion, and a second use mode in which the slide element 30 is retracted and the support leg 20 is folded to the bottom of the base 10.

[0066] Hereinafter, a second embodiment of the present disclosure will be described, but descriptions of the same parts as those in the first embodiment will be omitted.

[0067] Referring to FIGS. 10 to 14, the base assembly 1 further includes a stroke amplification mechanism 60. The first end of the stroke amplification mechanism 60 is connected to the base 10, and the second end of the stroke amplification mechanism 60 is connected to the support leg 20 via the traction element 40. The first end of the stroke amplification mechanism 60 is fixedly connected to the fixed frame 120 by a second fastener. The stroke amplification mechanism 60 may be a rhombic telescopic frame. A buffer elastic element 410 can be provided at the connection between the traction element 40 and the support leg 20, thereby preventing the structure of the support leg from being damaged by force when the support leg 20 is folded.

[0068] Referring to FIGS. 12 to 14, when the support leg 20 rotates and folds, the stroke amplification mechanism 60 is driven to shorten as the support leg 20 and the drive element 50 rotate, and the traction element 40 is wound around the drive element 50, whereby the traction element 40 pulls the support leg 20 and the slide element 30 and moves them into the base 10. Thereby, it is realized that the support leg 20 is folded and simultaneously retracted inwardly, and the operation is convenient.

[0069] In this embodiment, since there is a stroke amplification mechanism 60, when one end of the traction element 40 is driven by the support leg 20 to move a short distance, this distance is amplified by the stroke amplification mechanism 60, and further, the support leg 20 and the slide element 30 are telescoped together by a longer distance. While the support leg 20 is pivotally attached to the receiving groove 170, the support leg 20 and the slide element 30 are retracted to a predetermined position without protruding forward of the base 10, and vice versa.

[0070] Referring to FIGS. 15 and 16, the base assembly 1 further includes a support leg indicator 70 that is interlocked with the second end of the stroke amplification mechanism 60. The slide element 30 is provided with an indicator window 330 for at least partially exposing the support leg indicator 70. When the support leg 20 is deployed and the slide element 30 extends from the front surface of the base 10, the support leg indicator 70 can indicate whether the support leg is in the deployed state through the indicator window 330, which can be achieved, for example, by displaying a corresponding color. The support leg indicator 70 enables the state of the support leg 20 to be easily determined, making it more user-friendly. Also, the support leg indicator 70 is driven by the stroke amplification mechanism 60, and since there is no need to additionally provide a driving element, the structure is simple. Furthermore, since the stroke amplification mechanism 60 is completely synchronized with the deployment or folding of the support leg 20, the user can more accurately know the deployed or folded state of the support leg 20.

[0071] Specifically, when the support leg 20 is deployed, the stroke amplification mechanism 60 drives the support leg 20 and the slide element 30 to protrude forward of the base 10, and the colored portion (e.g., the green portion) of the support leg indicator 70 indicates that the support leg 20 is deployed in alignment with the indicator window 330. When the support leg 20 is folded, another colored portion (e.g., the red portion) of the support leg indicator 70 is aligned with the indicator window 330.

[0072] The main difference between the second embodiment and the first embodiment is that one end of the traction element 40 is connected to the support leg 20, and the other end of the traction element 40 is connected to the base 10 via the stroke amplification mechanism 60, whereby the rotation of the support leg 20 can be driven to extend and contract the support leg 20 over a longer distance, and better usage requirements can be satisfied.

[0073] Hereinafter, a third embodiment of the present disclosure will be described, but descriptions of the same parts as those in the first embodiment will be omitted.

[0074] Referring to FIGS. 17 to 19, in this embodiment, the base assembly has a stroke amplification mechanism 60. The stroke amplification mechanism 60 is a pulley mechanism. The pulley mechanism includes a movable pulley 610 disposed on the slide element 30, a fixed pulley 620 disposed on the base 10, and a link 630 connecting the movable pulley 610 and the fixed pulley 620. The first end of the traction element 40 is connected to the movable pulley 610, and the second end of the traction element 40 is connected to the support leg 20. The first end of the link 630 is fixed to the slide element 30. The second end of the link 630 sequentially bypasses the movable pulley 610 and the fixed pulley 620 and is fixed to the slide element 30.

[0075] The slide element 30 is provided with a slide groove 320. The movable pulley 610 is movably disposed in the slide groove 320. Referring to FIG. 17, the fixed pulley 620 is disposed on the left side of the movable pulley 610. Of course, referring to FIG. 17A, the fixed pulley 620 may be disposed on the right side of the movable pulley 610, and accordingly, the fixed position of the first end and the fixed position of the second end of the link 630 may be adjusted.

[0076] When the support leg 20 is folded, the traction element 40 is wound around the drive element 50, and as the support leg 20 and the drive element 50 rotate, the support leg 20 and the slide element 30 are pulled and moved into the base 10. As a result, the support leg 20 is drawn inward and folded synchronously. In this process, when the traction element 40 pulls the movable pulley 610, the link 630 pulls the support leg 20 and the slide element 30 toward the base 10, and the slide element 30 is drawn into the base 10.

[0077] Hereinafter, a fourth embodiment of the present disclosure will be described, but descriptions of the same parts as those in the first embodiment will be omitted.

[0078] Referring to FIGS. 20 and 21, the base assembly has a stroke amplification mechanism 60. The stroke amplification mechanism 60 is a pulley mechanism. This pulley mechanism includes a movable pulley 610 disposed on the slide element 30, a fixed pulley 620 disposed on the base 10, and a link 630 connecting the movable pulley 610 and the fixed pulley 620. The fixed pulley 620 includes a first fixed pulley 621 and a second fixed pulley 622 that are symmetrically arranged, and the link 630 may include a first link 631 and a second link 632 that are symmetrically arranged. The first end of the first link 631 is fixed to the slide element 30, the second end of the first link 631 passes through the movable pulley 610 and the first fixed pulley 621 and is fixed to the slide element 30, the first end of the second link 632 is fixed to the slide element 30, and the second end of the second link 632 passes through the movable pulley 610 and the second fixed pulley 622 and is fixed to the slide element 30.

[0079] The slide element 30 may be provided with a slide groove 320. The movable pulley 610 is movably disposed in the slide groove 320.

[0080] When the support leg 20 is folded, the traction element 40 is wound around the drive element 50. As the support leg 20 and the drive element 50 rotate, the support leg 20 and the slide element 30 are pulled to move into the base 10. Thereby, the support leg 20 is pulled inward and folded synchronously. In this process, when the traction element 40 pulls the movable pulley 610, the link 630 pulls the support leg 20 and the slide element 30 toward the base 10, whereby the slide element 30 is pulled into the base 10. The first end of the traction element 40 is connected to the movable pulley, and the second end of the traction element 40 is connected to the support leg 20. A traction element position limiting groove 420 for limiting the traction element 40 is formed in the drive element 50.

[0081] Hereinafter, a fifth embodiment of the present disclosure will be described, but descriptions of the same parts as those in the first embodiment will be omitted.

[0082] Referring to FIGS. 22 to 24, the base assembly has a stroke amplification mechanism 60. The stroke amplification mechanism 60 is a pulley mechanism. The pulley mechanism includes a movable pulley 610 disposed on the slide element 30 and a first fixed pulley 621, a second fixed pulley 622 disposed on the base 10, and a link 630 connecting the first fixed pulley 621, the movable pulley 610, and the second fixed pulley 622. The first end of the traction element 40 is connected to the movable pulley 610, and the second end of the traction element 40 is connected to the support leg 20.

[0083] The base 10 is provided with a positioning post 150. The slide element 30 is provided with an avoidance groove 310 for avoiding the positioning post 150. The first end of the link 630 is fixed to the positioning post 150, and the second end of the link 630 passes through the first fixed pulley 621, the movable pulley 610, and the second fixed pulley 622 in sequence and is fixed on the slide element 30.

[0084] The slide element 30 includes a slide bracket 340 slidably connected to the base bracket 160 and a housing 350 connected to the slide bracket 340. For example, the housing 350 is fixedly connected to the slide bracket 340 by a rivet. One of the base bracket 160 and the slide bracket 340 is provided with a slide groove 341, and the other of the base bracket 160 and the slide bracket 340 is provided with a slide lever 161 adapted to the slide groove 341. In this embodiment, the slide groove 341 is provided on the slide bracket 340 and the slide lever 161 is provided on the base bracket 160, but the positions of the slide groove 341 and the slide lever 161 may be interchanged. Specifically, in this embodiment, the slide groove 341 is disposed on the slide bracket 340, the slide lever 161 is disposed on the base bracket 160, and the slide lever 161 passes through the slide groove 341. It can be understood that the above structures of the base bracket 160, the slide bracket 340, the slide groove 341, and the slide lever 161 can be applied to any of the other embodiments described above.

[0085] FIG. 25 is a perspective view of the base assembly with the support legs of the present disclosure in the deployed position, and FIG. 26 is a perspective view of the base assembly with the support legs of the present disclosure in the folded position.

[0086] Referring to FIGS. 25-26, the child seat may include a base assembly 1 and a seat (not shown). The base assembly 1 can have a base 10, support legs 20, and a slide element 30. The base 10 may have a turntable 130. The turntable 130 is removably disposed on the upper surface of the base 10 and is rotatable relative to other portions of the base 10. The seat may be provided on the turntable 130 of the base 10 and thus may rotate with the turntable 130. The seat has at least a forward position and a rearward position. The forward position is a position where the seat faces the front of the vehicle, and the rearward position is a position where the seat faces the rear of the vehicle. The forward position may be applicable, for example, to an older child, and the rearward position may be applicable, for example, to a younger child. However, the present disclosure is not limited thereto.

[0087] The slide element 30 is telescopically disposed on the base 10, and the support legs 20 are rotatably connected to the slide element 30 and can telescopically extend and retract with the slide element 30. The support legs 20 are rotatable via the slide element 30 and are telescopically connected to the base 10. When the support legs 20 are used, the support legs 20 are rotatably deployed to contact the ground (i.e., the floor in the vehicle interior), while the slide element 30 extends from the base 10 to prevent the child seat from tipping over during an impact. When the support legs 20 are not needed, the slide element 30 is retracted into the base 10 with the support legs 20 rotatably folded, so that the overall size of the child seat is reduced, which is convenient for storage and use.

[0088] FIG. 27 is a perspective view of the base assembly of the present disclosure, with the support legs of the base assembly in the deployed position and a portion of the components of the base assembly removed to show the internal structure of the base assembly. FIG. 28 is a perspective view of a portion of the components of the base assembly of the present disclosure, and FIG. 29 is a perspective view of a portion of the components of the base assembly of the present disclosure, with the upper housing removed as compared to FIG. 28.

[0089] The base 10 may have a fixed frame 120 (see FIG. 36) and a base bracket 160 provided thereon. The fixed frame 120 and the base bracket 160 may be used as carriers. The base bracket 160 is, for example, a tube. The fixed frame 120 extends along the lateral direction of the base 10 and can straddle the base bracket 160 from above. The base bracket 160 has a symmetric structure, but the present disclosure is not limited thereto.

[0090] The slide element 30 includes a slide bracket 340 slidably sleeved on the base bracket 160 and a housing 350 connected to the slide bracket 340. The slide element 30 also includes a bush 360 disposed between the base bracket 160 and the slide bracket 340 to prevent the slide bracket 340 from directly sliding on the base bracket 160. The bush 360 is configured to reduce the frictional force between the base bracket 160 and the slide bracket 340, whereby the slide bracket 340 can slide smoothly with respect to the base bracket 160.

[0091] The housing 350 may be composed of an upper housing 351 and a lower housing 352, but the present disclosure is not limited thereto. The slide bracket 340 includes a support leg bracket 342 extending into the housing 350. The housing 350 is fixed to the support leg bracket 342 of the slide bracket 340 (e.g., by rivets). The slide bracket 340 is provided with a slide groove 341, and the base bracket 160 is provided with a sliding rod (not shown). Alternatively, the slide bracket 340 is provided with a sliding rod, and the base bracket 160 is provided with a slide groove 341. The two slide levers 161 and the two slide slots 341 may be symmetrically arranged.

[0092] FIG. 30 is a side cross-sectional view of the base assembly with the support legs of the present disclosure in the folded position, FIG. 31 is a partial enlarged view of part A in FIG. 30, FIG. 32 is a partial enlarged view of part B in FIG. 30, and FIG. 33 is a bottom perspective view of the base assembly with the support legs of the present disclosure in the folded position.

[0093] The support leg 20 is provided with a gear 550, the slide element 30 is provided with a rack 540, and when the gear 550 meshes with the rack 540, the movement of the slide element 30 to the extended position is linked to the rotation of the support leg 20 to the deployed position, and the movement of the slide element 30 to the retracted position is linked to the rotation of the support leg 20 to the folded position.

[0094] The extended position may refer to the position where the slide element 30 protrudes forward (left direction in FIG. 6) from the base 10, and the retracted position may refer to the position where the slide element 30 does not protrude or substantially does not protrude backward (right direction in FIG. 6) from the base 10.

[0095] The deployed position may refer to the position where the support leg 20 is rotated to be perpendicular or substantially perpendicular to the bottom surface of the base 10, and the folded position may refer to the position where the support leg 20 is rotated so as not to protrude or substantially not protrude from the bottom surface of the base 10.

[0096] The housing 350 is provided with a protective cover 250. The pivot 80 penetrates through the slide bracket 340, the protective cover 250 and the gear 550 to realize rotation. The protective cover 250 rotates together with the support leg 20 to close the gap generated after the support leg 20 is folded, and can prevent injury.

[0097] The base assembly 1 can include a first restoring element 520 (see FIG. 36). The first restoring element 520 (for example, a torsion spring) is provided on the pivot 80. The first restoring element 520 is configured to always bias the support leg 20 toward the deployed position. In this way, the first restoring element 520 can assist in deploying the support leg 20. The base assembly 1 can include a second restoring element 530. The second restoring element 530 (for example, a tension spring) may be provided on the base 10. One end of the second restoring element 530 is fixed to the base 10, and the other end of the second restoring element 530 is fixed to the slide element 30. The second restoring element 530 is configured to always bias the slide element 30 toward the extended position. That is, the second restoring element 530 automatically extends the support leg 20 and the slide element 30 to the front of the base assembly 1. The first restoring element 520 and the second restoring element 530 are optional but not essential. The number of the second restoring elements 530 may be one, two, or more, and is not limited in the present disclosure. The first restoring element 520 may be an elastic restoring element other than a torsion spring. The second restoring element 530 may be an elastic restoring element other than a tension spring.

[0098] Referring to FIGS. 32 to 33, the base 10 further includes a receiving groove 170. When the support leg 20 is folded, it may be received in the receiving groove 170 so that the folded support leg 20 does not protrude from the bottom surface of the base 10 or protrudes slightly from the bottom surface of the base 10. The base 10 may further include a locking element 180. The locking element 180 may be in the form of a push button and is movably disposed on the bottom surface of the base 10. For example, it moves along the longitudinal direction of the base assembly 1 (along the left - right direction as shown in FIG. 32) and is engaged to lock the locking hole 280 of the support leg 20 folded in the receiving groove 170. The locking element 180 can prevent the support leg 20 from accidentally rotating to the deployed position.

[0099] The base 10 further includes a step portion 190. The step portion 190 is formed as a side wall of the receiving groove 170. The step portion 190 prevents the slide element 30 from abutting against the support leg 20 and moving to the extended position when the support leg 20 is in the folded position.

[0100] FIG. 34 is a side cross - sectional view of the base assembly of the present disclosure with the support leg near the deployed position. FIG. 35 is a partially enlarged view of part C in FIG. 34. FIG. 36 is a partial top view of the base assembly of the present disclosure with the slide element of the base assembly in the extended position, and a part of the components of the base assembly is removed to show the internal structure of the base assembly. FIG. 37 is a partial top view of the base assembly of the present disclosure with the slide element of the base assembly in the extended position, and a part of the components of the base assembly is removed to show the internal structure of the base assembly. FIG. 37 is a partial top view of the base assembly of the present disclosure with the slide element of the base assembly in the extended position, and a part of the components of the base assembly is removed to show the internal structure of the base assembly. FIG. 38 is a partial top view of the base assembly of the present disclosure with the slide element of the base assembly in the retracted position, and a part of the components of the base assembly is removed to show the internal structure of the base assembly.

[0101] The base assembly 1 also includes a conversion structure 90 having a first end 910 (the left end as shown in FIG. 35) connected to the slide element 30 and a second end 920 (the right end as shown in FIG. 35) connected to the base 10. Specifically, the first end 910 of the conversion structure 90 is connected to the support leg bracket 342, and the second end 920 of the conversion structure 90 is connected to the fixed frame 120. The second end 920 (the right end shown in FIG. 35) of the conversion structure 90 is connected to the base 10. The rack 540 is fixed to the conversion structure 90. Specifically, the rack 540 is fixed at a position between the first end 910 and the second end 920 (i.e., the connection portion 930). The conversion structure 90 is extended or shortened in response to an increase or decrease in the distance between the slide element 30 and the base 10.

[0102] The conversion structure 90 may be formed by at least one X-shaped unit (as shown in FIG. 36). When the conversion structure 90 is formed by a plurality of X-shaped units, the plurality of X-shaped units are sequentially connected to each other. Each of the X-shaped units may be formed by two sheets rotatably connected to each other. The two sheets of each X-shaped unit are rotated relative to each other by a pivot. The above-mentioned sheets may be iron plates, and the present disclosure is not limited thereto. As an example, the conversion structure 90 is formed by three X-shaped units, and the rack 540 is fixed to the pivot of one of the X-shaped units on the left side (as shown in FIG. 36).

[0103] Two elongated holes may be formed in the support leg bracket 342 and the fixed frame 120, respectively. The first end 910 of the conversion structure 90 (including the ends of the two sheets of one X-shaped unit) is aligned with the two elongated holes of the support leg bracket 342, respectively. The second end 920 of the conversion structure 90 (including the ends of the two sheets of one X-shaped unit) is aligned with the two elongated holes of the fixed frame 120, respectively.

[0104] Each elongated hole of the support leg bracket 342 is configured to prevent the first end 910 of the conversion structure 90 from moving relative to the support leg bracket 342 along the longitudinal direction (the left - right direction shown in FIG. 36) of the base assembly 1, and to allow the first end 910 of the conversion structure 90 to move relative to the support leg bracket 342 of the base assembly 1 by a certain distance along the lateral direction (the up - down direction shown in FIG. 36) of the base assembly 1.

[0105] Each of the elongated holes on the fixed frame 120 is configured to prevent the second end 920 of the conversion structure 90 from moving relative to the fixed frame 120 along the longitudinal direction (the left - right direction shown in FIG. 36) of the base assembly 1, and to allow the second end 920 of the conversion structure 90 to move relative to the fixed frame 120 by a certain distance along the lateral direction (the up - down direction shown in FIG. 36) of the base assembly 1.

[0106] Referring to FIG. 29, a slide slot 3421 may be formed in the support leg bracket 342. A part of the connection portion 930 is located within the slide slot 3421. The slide slot 3421 prevents the connection portion 930 from moving in the lateral direction (the up - down direction shown in FIG. 36), and allows the connection portion 930 to move a certain distance along the longitudinal direction (the left - right direction shown in FIG. 36).

[0107] Hereinafter, the specific operation process of the base assembly 1 will be described.

[0108] The locking element 180 is first unlocked when it is necessary to use the support leg 20. For example, the locking element 180 can be unlocked by pushing or pressing the locking element 180 in the rearward direction (rightward as shown in FIG. 32). In this way, since the support leg 20 is not locked by the locking element 180, the support leg 20 rotates toward the deployed position under the action of the first restoring element 520 and moves out of the receiving groove 170. Further, since the support leg 20 moves out of the receiving groove 170, the stepped portion 190 no longer abuts against the support leg 20. At this time, the slide element 30 moves toward the extended position under the action of the second restoring element 530. As an example, the rack 540 and the gear 550 may be configured to mesh with each other when the stepped portion 190 no longer abuts against the support leg 20 and the support leg 20 and the slide element 30 start to move synchronously, but the present disclosure is not limited thereto. Then, the rack 540 moves relative to the gear 550 during the rotation of the support leg 20 to the deployed position and the movement of the slide element 30 to the extended position. The moving distance of the rack 540 relative to the gear 550 and the moving distance of the slide element 30 relative to the base 10 conform to a specific proportional relationship therebetween (which will be described in detail below). Finally, when the support leg 20 is rotated to the deployed position and the slide element 30 is moved to the extended position, the support leg 20 stops further rotation and the slide element 30 stops further movement. The "stop" as described above can be achieved, for example, by preventing further movement of the connecting portion 930 by the slide slot 3421, or by preventing further movement of the first end 910 and / or the second end 920 of the conversion structure 90 by the elongated holes on the support leg bracket 342 and / or the fixed frame 120, or by a combination of the above processes.

[0109] When the support leg 20 is not required, the operator can press the support leg 20 and rotate it in the direction towards the folded position. By rotating the support leg 20, the gear 550 is rotated, and by rotating the gear 550, the rack 540 is driven to move. Since the conversion structure 90 is fixedly connected to the rack 540, the conversion structure 90 can be shortened by the movement of the rack 540. Since the first end 910 of the conversion structure 90 is connected to the support leg bracket 342, the shortening of the conversion structure 90 causes the slide element 30 to move towards the retracted position. The conversion structure 90 can enlarge the movement distances of the slide element 30 and the support leg 20. When the support leg 20 is rotated into the receiving groove 170, the support leg 20 triggers the locking element 180 to lock the support leg 20 so that the support leg 20 does not deploy when the operator releases the hand from the support leg 20. At the same time, the stepped portion 190 also abuts against the support leg 20 to prevent the slide element 30 from protruding when the operator releases the hand from the support leg 20.

[0110] The conversion structure 90 is extended or shortened when the slide element 30 moves relative to the base 10. Taking the situation shown in FIG. 36 as an example, the conversion structure 90 has three X-shaped units, and the rack 550 is fixed to the pivot of the leftmost X-shaped unit. In this way, when the slide element 30 moves a distance L in the direction away from the base 10 relative to the base 10, the conversion structure 90 extends by the distance L accordingly. At this time, since the fixed position of the rack 550 is only at a distance corresponding to 2.5 X-shaped units from the base 10, the rack 550 is 5 / 6L away from the base 10. Since the gear 540 is connected to the slide element 30 via the pivot 80, the gear 540 moves a distance L relative to the base 10 in the direction away from the base 10. That is, the gear 540 moves a distance of 1 / 6L relative to the rack 550 in the direction away from the base 10. During the rotation process of the support leg 20, since the gear 540 moves relative to the rack 550, the rotation of the support leg 20 may cause the slide element 30 to move, and vice versa.

[0111] Note that the proportional relationship as described above is merely exemplary, and the proportional relationship between the moving distance of the rack 540 with respect to the gear 550 and the moving distance of the slide element 30 with respect to the base 10 can be adjusted as needed. This can also be achieved, for example, by changing the position where the rack 550 is fixed on the conversion structure 90. Furthermore, the proportional relationship described above can also be changed by other methods.

[0112] The child seat has a first usage mode in which the slide element 30 extends and the support legs 20 are deployed to form a ground support portion, and a second usage mode in which the slide element 30 is retracted and the support legs 20 are folded to the bottom of the base 10.

[0113] By the above technical solution, the embodiments of the present disclosure have the following advantages: 1. In the embodiment, since the support legs are provided to have at least a deployed position and a folded position, when the child seat is in use, the support legs can well support the child seat to prevent the child seat from tipping over. When not in use, the support legs can be folded to the lower part of the base for convenient storage, reducing the volume of the child seat and the transportation cost. Also, in the embodiment of the present disclosure, the slide element is disposed on the base in a telescopic manner, and the support legs are rotatably connected to the slide element and telescopic with the slide element. Thus, the support legs can be conveniently installed, rotate well, and can also be telescopic with the telescoping of the slide element. In this way, when the support legs are not in use, the slide element can retract to the bottom of the base, minimizing or eliminating the protrusion of the slide element from the front end of the base, thereby preventing interference with the child's feet, improving the child's riding comfort, further reducing the volume of the child seat, and further reducing the transportation cost. Furthermore, when the support legs are rotated and folded by the traction element, the traction element can be tightened to form a reaction force inward, so that the support legs can synchronously retract inward, i.e., in the direction close to the base. After the support legs are folded, there is no need to push and retract the support legs, which can simplify the operation of the user. In this way, the embodiment of the present disclosure has the advantages of simple operation, good use feeling, and high satisfaction, provides differentiation from existing products, and greatly enhances the market competitiveness of the product.

[0114] 2. The traction element is provided as a flexible element, having a certain flexibility and deflection, being convenient for the rolling deformation of the traction element, enabling the support legs to retract well inward during folding, ensuring the retraction effect of the support legs and thus the retraction effect of the slide element. Moreover, when the support legs are folded, the operation is simple.

[0115] 3. The flexible element is provided as a steel wire. By doing so, the strength of the traction element can be sufficiently ensured, the risk of breakage when being pulled can be avoided, the durability can be improved, good flexibility and bending deflection can be ensured, and when the support leg rotates and folds, a good inner reaction force can be formed, the support leg can retract inward, or the flexible element is provided as a string or webbing. When the support leg rotates and folds, the support leg can retract inward synchronously, simplifying the operation of the user. Also, since the material cost of the string or webbing is low, the overall cost of the child seat can be reduced.

[0116] 4. The driving element is provided to rotate together with the support leg. The traction element can form a better reaction force when the support leg rotates and folds. That is, the driving element can wind up the traction element to a certain extent, and the support leg can be better pulled so as to retract inward, and the support leg can be completely folded. By doing so, the slide element will not protrude too much from the front end of the base and affect the riding comfort of the child, and the usability of the child seat can be improved. Also, the volume of the child seat can be reduced during transportation, and the transportation cost can be reduced.

[0117] 5. The driving element is provided on the support leg, which is convenient for the driving element to rotate together with the support leg. The driving element is integrally formed with the support leg and formed as a part of the support leg, ensuring the strength and durability of the driving element and increasing its service life. Or, the driving element and the support leg have a separated structure and are fixedly connected by a fixing structure, which is convenient for setting the structure and position of the driving element. Without being restricted by the structure and position of the driving element, the degree of freedom in structure design is increased.

[0118] 6. Since the drive element is arranged at the upper end of the support leg, when the support leg rotates and folds, it can be rotated at a small angle to retract the support leg. As a result, not only is the force saved when the support leg rotates and folds, but also the length of the traction element is shortened and the material cost is reduced, thus reducing the overall manufacturing cost.

[0119] 7. The drive element is in the shape of a boss, and an arc-shaped portion that coincides with the traction element is provided on the drive element. In this way, when the support leg rotates and folds, the drive element can form a better rolling effect on the traction element, and the traction element can form a greater inward reaction force to pull the support leg inward, ensuring the retraction effect of the support leg and thus the retraction effect of the slide element. Or, the drive element may be in the shape of a sleeve or a column, so that the traction element is wound up well, that is, by applying a force to the traction element, the traction element generates a sufficient reaction force and can pull the support leg with a good retraction effect.

[0120] 8. Since the first end of the traction element is fixedly connected to the base and the second end of the link is fixedly connected to the drive element, one end of the traction element is fixedly arranged and the other end is movably arranged. In this way, when the support leg rotates, the other end of the traction element is wound up and tightened by the drive element, so that stress is applied to the traction element. When a force that rotates the drive element outward is applied to the traction element, a reaction force can be formed to pull the support leg inward so that it can retract synchronously when the support leg rotates and folds. The traction element is stable and reliable when a force is applied and is not easily damaged. Further, by rotating the support leg at a small angle, the support leg can be retracted. Or, the second end of the traction element can be directly fixed to the upper end of the support leg, and when the support leg rotates and folds, the support leg directly drives the traction element, and the traction element is tightened under the action of the drive member to form a reaction force, so that the synchronous inward retraction of the support leg can be realized when the support leg rotates and folds.

[0121] 9. The base is provided with fixed columns, and the fixed columns are adapted to fasteners for fixing the first end of the traction element to the base. This fixing method is simple, highly reliable, and not prone to loosening, so the effect of the traction element can be ensured.

[0122] 10. A stroke expansion mechanism is provided, which has a first end connected to the base and a second end connected to the support leg via a traction element. Thus, when the support leg rotates and folds, the traction element is driven, and then the traction element drives the stroke expansion mechanism. As a result, the support leg is driven to retract inward, and when the support leg folds, it is driven to retract inward synchronously. This is convenient for operation, and also can increase the inward retraction length of the support leg to meet better usage conditions.

[0123] 11. A rhombic telescopic frame is used. This telescopic frame not only ensures the retraction effect of the support leg with a good telescopic effect, but also can have a large telescopic change, that is, it can be extended to a large length or retracted to a small length. Thereby, a better stroke expansion effect is achieved, and in particular, the retraction effect of the support leg can be significantly enhanced. Also, it has sufficient strength, is not easily deformed or loosened when pulling the support leg, has a simple structure, is convenient for production processing and the assembly of the whole machine, and improves production efficiency and assembly efficiency. Specifically, the rhombic telescopic frame is formed by connecting a plurality of rhombic structures. The rhombic structure includes a plurality of groups of two connecting rod assemblies hinged at an intermediate position, ensuring the effect of the rhombic telescopic frame and facilitating the production and assembly of the rhombic telescopic frame.

[0124] 12. A fixed frame is provided to facilitate the fixation between the stroke expansion mechanism and the base. By ensuring its fixation, the stability and reliability of the stroke expansion mechanism during telescoping are ensured.

[0125] 13. A pulley mechanism is provided to achieve stroke expansion, smooth operation, low resistance, reliable structure, and low cost.

[0126] 14. A movable pulley, a fixed pulley, and a link mechanism are provided to increase the stroke, with a simple structure and high reliability.

[0127] 15. The first end of the link is fixed to the sliding element, and the second end of the link is fixed to the sliding element after bypassing the movable pulley and the fixed pulley in sequence. The traction element drives the stroke expansion mechanism, and the stroke expansion mechanism drives the support leg to retract inward, and when the support leg is folded, it retracts inward synchronously, making the operation easier and increasing the length of the retraction inside the support leg, so that better usage conditions can be satisfied.

[0128] 16. Two fixed pulleys and two links are provided to make the pulley mechanism run more stably, apply stress evenly when the support leg is deployed and folded, and at the same time increase the stroke expansion effect.

[0129] 17. By providing the first fixed pulley on the sliding element, the pulley mechanism can run more stably. At the same time, the stroke expansion effect is large, and the number of links used can be reduced.

[0130] 18. A positioning column and an avoidance groove are provided to enable the positioning column to move relative to the sliding element, ensuring the stability and reliability during the expansion and contraction of the stroke expansion mechanism.

[0131] 19. The slide groove is provided for the movable pulley to slide, preventing the movable pulley from having unexpected displacement during the movement process, thereby ensuring that the support leg retracts at a uniform speed when folded.

[0132] 20. Since the support leg indicator and the indication window are provided, the state of the support leg can be easily determined, which is more convenient for the user. In addition, since the support leg indicator is driven by the stroke expansion mechanism, there is no need to additionally provide a driving element, and thus the structure is simple. Since the stroke expansion mechanism is completely synchronized with the deployment or folding of the support leg, the user can more accurately prompt the deployment or folding state of the support leg.

[0133] 21. The buffer elastic element is provided to prevent the support leg from being damaged by force when the support leg is blocked while the support leg is folded.

[0134] 22. The slide groove and the slide lever are provided. When the support leg is folded, the slide element is housed in the base, thereby further reducing the volume of the base assembly.

[0135] 23. In the child seat according to the embodiment of the present disclosure, when the support leg rotates and folds, the support leg is synchronously retracted inward by tightening the traction element to form an inward reaction force, which is simple and convenient to operate and can save volume.

[0136] 24. A slide element is provided, and the support leg is rotatably connected to the slide element so that the support leg can be deployed and folded as the slide element expands and contracts. The safety seat in both usage modes has good safety during deployment and a small size when folded. In the first usage mode, the seat faces backward and the support leg is deployed, or the seat faces forward and the support leg is deployed. In the second usage mode (BOOSTER mode), the seat faces forward and the support leg is folded. In the first usage mode, the seat can be used facing backward with the support leg deployed or facing forward with the support leg deployed. More specifically, the mode where the seat faces backward and the support leg is deployed is suitable for children under 15 months old and / or with a height of 0 - 105 cm, and the mode where the seat faces forward and the support leg is deployed is suitable for children 15 months old and above and / or with a height of 76 - 105 cm. That is, this is the "small child" mode. In the second usage mode (BOOSTER mode), it is necessary to face the seat forward and fold the supporting leg before use. This mode is suitable for children with a height of 100 - 150 cm.

[0137] In the first usage mode, by expanding and contracting the slide element, the grounding position of the support leg after deployment can be adjusted. The upper end of the support leg supports the base at an appropriate position, supports the safety seat well, can prevent the safety seat from tipping over, and can ensure the safety during the use of the safety seat. On the other hand, there is sufficient space in the rear row seat of the vehicle. When the vehicle is impacted, the sufficient space in the front-rear direction forms a good buffering effect, and can fully protect small children. Also, because the space is large, it is convenient for installing the safety seat and for small children to get on and off. Furthermore, in the second usage mode, when the support leg is not needed, the support leg can be folded and hidden under the base, and the safety seat can be attached to the vehicle seat for use by older children. Older children are usually taller than small children, so more space is needed. The second usage mode of the safety seat not only expands the available space of the rear row seat of the vehicle and satisfies the riding space of older children, but also, because the space in the front-rear direction of the vehicle is large enough, forms a better cushion when the vehicle is impacted, improves the safety protection of older children, enlarges the space for older children to place their feet, improves the riding comfort of the safety seat, and ensures the safety and stability when used by older children. On the other hand, when not in use, the support leg can be stored and hidden, so that the overall size of the safety seat can be reduced, the packaging volume of the safety seat can be reduced, and the transportation cost can be reduced. Furthermore, the support leg is telescopic and is folded together with the slide element, so the overall size of the safety seat can be changed. Although the rear row space varies for different types of vehicles, it can be adapted to different types of vehicles, thereby greatly improving the application range of the safety seat of the embodiments of the present disclosure. Furthermore, the safety seat according to the embodiments of the present disclosure can be used in two modes for small children and older children, that is, the safety seat according to the embodiments of the present disclosure is multi-purpose, so the application range of the embodiments of the present disclosure is greatly improved. Therefore, the user only needs to purchase one safety seat, and the user's cost can be greatly reduced. Therefore, it is more attractive to users, forms product differentiation, and greatly improves the market competitiveness of the product.

[0138] 25. Since a receiving groove is provided, after folding the support legs to the lower part of the base, the lower surface of the child seat becomes flat, the space of the base can be fully utilized, and further space can be saved.

[0139] 26. In the embodiment, since the support legs are provided so as to have at least a deployed position and a folded position, when using the child seat, the child seat can be well supported by the support legs to prevent the child seat from tipping over. When not in use, the support legs can be folded to the lower part of the base for convenient storage, the volume of the child seat can be reduced, and the transportation cost can be reduced. Further, in the embodiment of the present disclosure, the slide element is disposed on the base so as to be stretchable, the support legs are rotatably connected to the slide element, and the support legs expand and contract together with the slide element. Therefore, the support legs are conveniently installed, rotate well, and can also expand and contract together with the expansion and contraction of the slide element. In this way, when the support legs are not in use, the slide element is stored at the bottom of the base, the protrusion of the slide element from the front end of the base is minimized or eliminated, thereby preventing interference with the child's feet, improving the child's riding comfort, further reducing the volume of the child seat, and further reducing the transportation cost. Furthermore, due to the meshing of the gear and the rack, the movement of the slide element to the extended position is interlocked with the rotation of the support legs to the deployed position, and the movement of the slide element to the contracted position is interlocked with the rotation of the support legs to the folded position. Therefore, after the support legs are folded, there is no need to push and contract the support legs, and the operation of the user is simplified. Thus, the embodiment of the present disclosure has the advantages of simple operation, good use feeling, and high satisfaction, provides differentiation from existing products, and greatly enhances the market competitiveness of the product.

[0140] 27. Since the base assembly of the present disclosure includes a gear and a rack, the connection between the support legs and the slide element provides excellent connection quality and operation experience.

[0141] 28. Since the base assembly of the present disclosure includes a conversion structure, the moving distance of the rack relative to the base is different from the moving distances of the support legs and the slide elements relative to the base. In this way, the rack can move relative to the gear, thereby realizing the interlocking between the movements of the support legs and the slide elements.

[0142] 29. The conversion structure of the base assembly of the present disclosure is formed by an X-shaped unit and has a highly reliable structure and a large expansion and contraction distance. By changing the number of X-shaped units forming the conversion structure, a desired expansion and contraction distance can be achieved. Furthermore, the conversion structure formed by the X-shaped unit is easy to assemble.

[0143] 30. Since the base of the present disclosure has a locking element, the support legs will not accidentally open when the child seat is not in use, thereby ensuring the reliability of the child seat.

[0144] 31. The base of the present disclosure has a stepped portion to prevent the slide element from accidentally protruding from the base when the child seat is not in use, thereby ensuring the reliability of the child seat.

[0145] 32. Since a receiving groove is provided, after the support legs are folded at the bottom of the base, the lower surface of the child seat becomes flat, and the space of the base can be fully utilized, further saving space.

[0146] Those skilled in the art, after considering this specification and implementing the present disclosure as described above, will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover modifications, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include general knowledge or general technical means in technical fields not disclosed in the present disclosure. Also, this specification and its embodiments are regarded as illustrative only, and the scope and spirit of the present disclosure are indicated by the claims of the present disclosure.

[0147] Although the present disclosure has been described with reference to examples of typical embodiments, the terms used are not restrictive but illustrative and exemplary. Since the present disclosure can be embodied in various forms without departing from the spirit and essence of the present disclosure, the above-described embodiments are not limited to the foregoing details, but should be construed in the broadest sense within the scope defined by the claims, and thus it should be understood that all changes falling within the scope of the claims or the scope of their equivalents should be covered by the claims.

Claims

1. A base assembly (1) comprising a base (10), support legs (20), a slide element (30), and a traction element (40), wherein the slide element (30) is telescopically provided on the base (10), and the support legs (20) are rotatably connected to the slide element (30) so as to telescopically move with the slide element (30) relative to the base (10), and the traction element (40) is configured to pull the support legs (20) towards the base (10) as the support legs (20) pivot from the deployed position to the folded position. A base assembly characterized by the above.

2. The traction element (40) is a flexible element. The base assembly according to claim 1, characterized by the above.

3. The flexible element is a steel wire, a string, or a webbing. The base assembly according to claim 2, characterized by the above.

4. The base assembly (1) further includes a driving element (50) that rotates with the support legs (20), and the driving element (50) is configured to wind up the traction element (40) such that the support legs (20) are pulled to move towards the base (10). The base assembly according to any one of claims 1 to 3, characterized by the above.

5. The driving element (50) is disposed on the support legs (20), and the driving element (50) is integrally formed with the support legs (20), formed as a part of the support legs (20), or the driving element (50) and the support legs (20) are separately formed and fixedly connected to each other by a fixing structure. The base assembly according to claim 4, characterized by the above.

6. The driving element (50) is located at the upper end of the support legs (20). The base assembly according to claim 4 or 5, characterized by the above.

7. The driving element (50) is in the shape of a boss, the driving element (50) has an arc member adapted to the traction element (40), or the driving element (50) is in the shape of a pulley, or the driving element (50) is in the shape of a column. The base assembly according to any one of claims 4 to 6, characterized by the above.

8. The first end of the traction element (40) is connected to the base (10), and the second end of the traction element (40) is connected to one of the driving element (50) and the upper end of the support legs (20). The base assembly according to any one of claims 4 to 7, characterized in that...

9. Fixing columns are provided on the inner upper wall of the base (10), and the first end of the traction element (40) is fixed to the fixing columns via a first fastener. The base assembly according to claim 8, characterized in that...

10. The base assembly (1) further includes a stroke amplification mechanism (60). The stroke amplification mechanism (60) has a first end connected to the base (10) and a second end connected to the support leg (20) via the traction element (40). The base assembly according to any one of claims 1 to 9, characterized in that...

11. The stroke amplification mechanism (60) is a rhombic telescopic frame. The base assembly according to claim 10, characterized in that...

12. The fixed frame (120) is arranged on the base (10), and the first end of the stroke amplification mechanism (60) is connected to the fixed frame (120) via a second fastener. The base assembly according to claim 10 or 11, characterized in that...

13. The stroke amplification mechanism (60) is a pulley mechanism. The base assembly according to any one of claims 10 to 12, characterized in that...

14. The pulley mechanism includes a movable pulley (610), a fixed pulley (620), and a link (630). The movable pulley (610) is arranged on the slide element (30). The fixed pulley (620) is arranged on the base (10). The link (630) connects the movable pulley (610) and the fixed pulley (620). The first end of the traction element (40) is connected to the movable pulley (610). The base assembly according to claim 13, characterized in that...

15. The first end of the link (630) is fixed to the slide element (30), and the second end of the link (630) is fixed to the slide element (30) after bypassing the movable pulley (610) and the fixed pulley (620). The base assembly according to claim 14, characterized in that...

16. The fixed pulley (620) includes a first fixed pulley (621) and a second fixed pulley (622) that are symmetrically arranged. The link (630) includes a first link (631) and a second link (632) that are symmetrically arranged. A first end of the first link (631) is fixed to the slide element (30). A second end of the first link (631) bypasses the movable pulley (610) and the first fixed pulley (621) and is fixed to the slide element (30). A first end of the second link (632) is fixed to the slide element (30). A second end of the second link (632) bypasses the movable pulley (610) and the second fixed pulley (622) and is fixed to the slide element (30). The base assembly according to claim 14 or 15, characterized in that.

17. The pulley mechanism includes a movable pulley (610), a first fixed pulley (621), a second fixed pulley (622), and a link (630). The movable pulley (610) is arranged on the slide element (30). The first fixed pulley (621) is arranged on the slide element (30). The second fixed pulley (622) is arranged on the base (10). The link (630) connects the first fixed pulley (621), the movable pulley (610), and the second fixed pulley (622). The first end of the traction element (40) is connected to the movable pulley (610). The base assembly according to claim 13, characterized in that.

18. The base (10) is provided with a positioning post (150). The slide element (30) is provided with an avoidance groove for avoiding the positioning post (150). A first end of the link (630) is fixed to the positioning post (150). A second end of the link (630) bypasses the first fixed pulley (621), the movable pulley (610), and the second fixed pulley (622) and is fixed to the slide element (30). The base assembly according to claim 17, characterized in that.

19. The slide element (30) is provided with a slide groove (341) for the movable pulley (610) to slide. The base assembly according to claim 14 or 17, characterized in that.

20. The base assembly (1) includes a support leg indicator (70) that interlocks with the second end of the stroke expansion mechanism (60), and an indicator window (330) for exposing at least a part of the support leg indicator (70) is provided in the slide element (30). The base assembly according to claim 10, characterized in that.

21. The buffer elastic element (410) is disposed at the connection point between the second end of the traction element (40) and the support leg (20). The base assembly according to any one of claims 1 to 20, characterized in that.

22. The base assembly (1) further includes a base bracket (160) disposed on the base (10). The slide element (30) includes a slide bracket (340) slidably connected to the base bracket (160). A slide groove (341) is provided in one of the base bracket (160) and the slide bracket (340), and a slide lever (161) adapted to the slide groove (341) is provided in the other of the base bracket (160) and the slide bracket (340). The base assembly according to any one of claims 1 to 21, characterized in that.

23. A child seat for a vehicle, The base assembly (1) according to any one of claims 1 to 22, and a seat (2) disposed on the base assembly (1). A child seat for a vehicle, characterized in that.

24. The seat (2) is rotatably disposed on the base (10) and has at least a front position and a rear position. The child seat has a first use mode and a second use mode. In the first use mode, the slide element (30) extends outward, and the support leg (20) is deployed to form a ground support portion. In the second use mode, the slide element (30) retracts, and the support leg (20) is folded at the bottom of the base (10). The child seat for a vehicle according to claim 23, characterized in that.

25. A receiving groove (170) for receiving the support leg (20) is provided at the bottom of the base (10). After the support leg (20) is folded at the bottom of the base (10), the lower surface of the support leg (20) does not protrude from the bottom surface of the base (10). The vehicle child seat according to claim 23 or 24, characterized in that...

26. A base assembly (1) including a base (10), support legs (20), and a slide element (30), wherein the support legs (20) are provided with gears (550), the slide element (30) is telescopically provided on the base (10) and is provided with a rack (540), the gears (550) mesh with the rack (540) such that the movement of the slide element (30) to the extended position is linked to the rotation of the support legs (20) to the deployed position, and the movement of the slide element (30) to the retracted position is linked to the rotation of the support legs (20) to the folded position. A base assembly characterized in that...

27. The base assembly (1) further includes a conversion structure (90) having a first end (910) connected to the slide element (30) and a second end (920) connected to the base (10), and the rack is fixed at a position between the first end (910) and the second end (920), the conversion structure (90) is extended or shortened corresponding to an increase or decrease in the distance between the slide element (30) and the base (10). The base assembly according to claim 26, characterized in that...

28. The conversion structure (90) is composed of at least one X-shaped unit. The base assembly according to claim 27, characterized in that...

29. Each of the at least one X-shaped unit is formed by two sheets rotatably connected to each other. The base assembly according to claim 28, characterized in that...

30. The base assembly (1) further includes a first restoring element (520) configured to always bias the support legs (20) to the deployed position. The base assembly according to any one of claims 26 to 29, characterized in that...

31. The base assembly (1) further includes a second restoring element (530) configured to always bias the slide element (30) to the extended position. The base assembly according to any one of claims 26 to 30, characterized in that...

32. The second restoring element (530) is a tension spring and has one end fixed to the base (10) and the other end fixed to the slide element (30). The base assembly according to claim 31, characterized in that... Claim 33 The base (10) includes a locking element (180) that operably locks the support leg (20) in the folded position The base assembly according to any one of claims 26 to 32, characterized in that. Claim 34 The base (10) includes a step portion (190), and when the support leg (20) is in the folded position, the step portion (190) abuts against the support leg (20) to prevent the slide element (30) from moving to the extended position The base assembly according to any one of claims 26 to 33, characterized in that. Claim 35 A child seat for a vehicle, comprising: The base assembly (1) according to any one of claims 26 to 34, and A seat disposed on the base assembly (1) A child seat for a vehicle, characterized in that.

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