Base assembly and child car safety seat

Abstract

The application discloses a base assembly, characterized in that comprising: a base; a sliding part telescopically arranged on the base; a supporting leg pivotally connected to the sliding part and telescopically moving with the sliding part, and having an unfolded position in use and a folded position in non-use; and a supporting leg folding structure, which is actuated to move the sliding part and the supporting leg together towards the inside of the base in response to the supporting leg pivoting from the unfolded position to the folded position. The base assembly and the child car safety seat provided by the application simplify the operation of the user, make the operation simple, and provide a good user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of child car safety seats, and particularly relates to a base assembly convenient to operate and a child car safety seat. BACKGROUND

[0002] A child safety seat has become an indispensable carrier for children to travel. A child safety seat has a support leg structure arranged on a base in order to improve stability and use safety. In use, the support leg structure is unfolded and touches the ground, which can well support the child safety seat to prevent the child safety seat from overturning. When not in use, the support leg structure can be folded at the bottom of the base to reduce the volume.

[0003] However, the child safety seat with the support leg structure has a protruding portion arranged at the front end of the base. The protruding portion is used to install the support leg structure. When the support leg structure is not needed, the protruding portion is troublesome, which not only affects the riding experience of children, but also increases the volume of the child safety seat, thereby increasing the transportation cost.

[0004] Although a child safety seat with a telescopic support leg structure can solve the above problems, two steps are needed to fold and retract the support leg structure. The support leg structure needs to be folded first, and then the support leg structure is pushed to retract the support leg structure to achieve complete folding. Such operation is relatively cumbersome and the user experience is not good. SUMMARY

[0005] The purpose of the present application is to provide a base assembly convenient to operate and a child car safety seat.

[0006] To achieve the above purpose, in one aspect, the present application provides a base assembly, which comprises: a base; a sliding member telescopically arranged on the base; a support leg pivotally connected to the sliding member and telescopically moving with the sliding member, and having an unfolded position in use and a folded position when not in use; and a support leg retraction structure, which actuates the sliding member and the support leg to move towards the inside of the base in response to the support leg pivoting from the unfolded position to the folded position.

[0007] In one embodiment, the base comprises a base bracket, the sliding member comprises a sliding bracket, the sliding bracket is sleeved on the base bracket, and can slide relative to the base bracket by a certain distance.

[0008] In one embodiment, the support leg retraction structure comprises a driving member and a guide assembly, wherein the driving member is arranged in the sliding member and pivots with the support leg, and the guide assembly converts the pivoting of the driving member into an actuating force for moving the sliding member and the support leg towards the inside of the base.

[0009] In one embodiment, the guiding assembly comprises a traction member and a rotating link, the traction member transmits movement of one end of the traction member to the other end of the traction member, the rotating link is pivotally connected to the base, one end of the rotating link is connected to the other end of the traction member, and the other end of the rotating link is connected to the sliding support.

[0010] In one embodiment, the traction member comprises a wire and a sheath, the sheath is fixed to the base, the sheath is flexible, the wire is arranged in the sheath, and two ends of the wire respectively extend out of the sheath to be respectively connected to one end of the rotating link and the support leg.

[0011] In one embodiment, the guiding assembly comprises a traction rack and a transmission tooth, the traction rack is arranged on the base along the direction in which the sliding support slides relative to the base support, and the transmission tooth is formed on the outer peripheral surface of the driving member.

[0012] In one embodiment, the guiding assembly comprises a traction rod, one end of the traction rod is pivotally connected to the base support, and the other end of the traction rod is pivotally connected to the driving member.

[0013] In one embodiment, the outer peripheral surface of the driving member is formed with a relief groove, and the other end of the traction rod is located in the relief groove.

[0014] In one embodiment, the base assembly further comprises a protective cover, the protective cover is coaxially arranged with the driving member to shield the gap between the support leg and the housing of the sliding member when the support leg is pivoted to the folded position.

[0015] In one embodiment, the base assembly further comprises a first return member and a second return member, the first return member is used to move the sliding member to the outside of the base, and the second return member is used to pivot the support leg from the folded position to the unfolded position.

[0016] In one embodiment, the outer peripheral surface of the driving member is at least partially formed in a circular arc shape.

[0017] In another aspect, a child car safety seat is provided, comprising a base assembly and a seat arranged on the base assembly, the base assembly is the aforementioned base assembly.

[0018] After adopting the above technical solutions, the present application has at least one of the following advantages:

[0019] 1、In this application, by setting the support leg to have at least one unfolded position and one folded position, when the child car safety seat is used, the support leg is used to support the child car safety seat well to prevent the child car from overturning, and when not in use, it can be folded at the bottom of the base to facilitate the storage of the support leg, while reducing the size of the child car safety seat to reduce transportation costs; At the same time, by setting the sliding member telescopic on the base, and the support leg is pivoted on the sliding member and telescopic with the sliding member, not only convenient for the installation of the support leg, but also can be well pivoted, and can be telescopic with the sliding member, so that when the support leg is not in use, the sliding member can be retracted to the bottom of the base, to reduce the length of the sliding member protruding from the front end of the base or the sliding member not protruding, so as to not affect the child's feet, to improve the riding experience of the child, and further reduce the size of the child car safety seat to further reduce transportation costs, and through the guide assembly, when the support leg is pivoted and folded, an inward reaction force is formed to make the support leg shrink inward, that is, towards the base, so that the user does not need to push the support leg back to achieve complete folding after folding the support leg, simplifying the user's operation, making the operation simple, and the user experience is good, the satisfaction is high, and the product is differentiated from the existing products, greatly improving the market competitiveness of the product.

[0020] 2、Since the sliding bracket can slide relative to the base bracket for a certain distance, the safety seat can be shrunk to a smaller size in the front-back direction when not in use, and expanded to the required length in the front-back direction when in use. By setting the sliding bracket on the base bracket, the sliding bracket can stably linearly move relative to the base bracket, so that the sliding member has good running quality.

[0021] 3、Since there is a driving member and a guide assembly, the pivoting of the support leg can be linked with the translation of the sliding member, and the guide assembly can transmit the pivoting of the support leg to the sliding member in the form of amplifying the stroke, that is, the support leg rotates a smaller angle, and the sliding member and the support leg can be shrunk larger.

[0022] 4、The child car safety seat of the present application is provided with a sliding member, and the supporting leg is pivotally connected to the sliding member, so that the supporting leg can be unfolded or folded with the extension or retraction of the sliding member, so that the safety seat can have good safety when unfolded and small size when folded in both use modes. In the first use mode, the seat is rearward and the supporting leg is unfolded, or the seat is forward and the supporting leg is unfolded; in the second use mode (booster mode), the seat is forward and the supporting leg is folded. In the first use mode, the seat can be used rearward and the supporting leg is unfolded, or the seat is used forward and the supporting leg is unfolded, and more specifically, the seat rearward and the supporting leg unfolded use mode is suitable for children less than 15 months old and / or with a height of 0-105 cm, and the seat forward and the supporting leg unfolded use mode is suitable for children more than 15 months old and / or with a height of 76-105 cm, i.e. small child mode; in the second use mode (booster mode), the seat needs to be used forward and the supporting leg needs to be folded, and this mode is suitable for children with a height of 100-150 cm, i.e. big child mode.

[0023] In the first use mode, the ground contact position of the support leg after unfolding is adjusted by the telescopic sliding of the sliding member, so that the upper end of the support leg is supported on the base just right, which can well support the safety seat and prevent the safety seat from overturning, thereby ensuring the safety of the safety seat in use. Meanwhile, the rear row of the car seat has sufficient space, and when the car is hit, the front and rear spaces are sufficient, which can form a good buffering effect to well protect the small child. In addition, in the second use mode, i.e. when the support leg is not needed, the support leg can be folded and hidden under the base, and then installed on the car seat for use by children of different ages. Since children of different ages are taller and larger than small children, they need more space. In this way, not only is the space of the rear row of the car seat increased to meet the seating space of children of different ages, but also when the car is hit, the front and rear spaces are large enough to form better buffering, thereby providing better safety protection for children of different ages. At the same time, the space for the feet of children of different ages is released to improve the comfort of the safety seat, and the safety and stability of children of different ages in use are ensured. At the same time, when not in use, the support leg is stored and hidden, which reduces the overall size of the safety seat, thereby reducing the packaging material of the safety seat and the transportation cost. In addition, with the telescopic and foldable sliding member, i.e. the support leg, the overall size of the safety seat can be changed. Since the rear row spaces of different types of cars are different, this safety seat can adapt to different types of cars, greatly improving the application range of the safety seat. At the same time, this safety seat can realize two modes of use, i.e. the use of small children and children of different ages, one chair with multiple uses, which greatly improves the use range of the safety seat. In this way, users only need to purchase one safety seat, which greatly reduces the use cost of users and can better attract users to form product differentiation and greatly improve the market competitiveness of the product. BRIEF DESCRIPTION OF DRAWINGS

[0024] The various objects, features and advantages of the present application will become more apparent from the following detailed description of preferred embodiments of the application, when considered in conjunction with the accompanying drawings. The drawings are not necessarily to scale, and in some instances, various components of the application can be shown exaggerated in relation to other components to illustrate certain aspects of the application. In the drawings:

[0025] Figure 1 is a side view of the base assembly of the present application, wherein the support leg of the base assembly is in an unfolded position;

[0026] Figure 2 is a side view of the base assembly of the present application, wherein the support leg of the base assembly is in a folded position;

[0027] Figure 3is a partial perspective view of the base assembly of the first embodiment of the present application with the support legs of the base assembly in the deployed position;

[0028] Figure 4 is a perspective view of the base assembly of the first embodiment of the present application with the support legs of the base assembly in the deployed position;

[0029] Figure 4A is a partial view of Figure 4

[0030] Figure 5 is a partial perspective view of the base assembly of the first embodiment of the present application with the support legs of the base assembly in the stowed position;

[0031] Figure 6 is a partial perspective view of the base assembly of the first embodiment of the present application with the support legs of the base assembly in the stowed position;

[0032] Figure 7 is a partial perspective view of the base assembly of the second embodiment of the present application with the support legs of the base assembly in the deployed position;

[0033] Figure 8 is a partial perspective view of the base assembly of the second embodiment of the present application with the support legs of the base assembly in the stowed position;

[0034] Figure 9 is a partial perspective view of the base assembly of the second embodiment of the present application with the support legs of the base assembly in the deployed position;

[0035] Figure 10 is a partial perspective view of the base assembly of the third embodiment of the present application with the support legs of the base assembly in the deployed position;

[0036] Figure 11 is a schematic partial cross-sectional view of the base assembly of the third embodiment of the present application with the support legs of the base assembly in the deployed position;

[0037] Figure 12 is a perspective view of the tow bar of the base assembly of the third embodiment of the present application;

[0038] Figure 13 is a partial perspective view of the base assembly of the third embodiment of the present application with the support legs of the base assembly in the stowed position;

[0039] Figure 14 is a schematic partial cross-sectional view of the base assembly of the third embodiment of the present application with the support legs of the base assembly in the stowed position.

[0040] List of Reference Numerals: ​

[0041] Base assembly 1

[0042] Base 10

[0043] Fixing frame 120

[0044] Base support 160

[0045] Sliding rod 161

[0046] Accommodating groove 170

[0047] Locking piece 180

[0048] Supporting leg 20

[0049] Connecting piece 240

[0050] Protective cover 250

[0051] Slider 30

[0052] Sliding support 340

[0053] Sliding groove 341

[0054] Shell 350

[0055] Traction piece 40

[0056] Wire 410

[0057] Sheath 420

[0058] Limiting boss 430

[0059] Driving piece 500

[0060] Traction piece limiting groove 501

[0061] Traction piece connecting portion 502

[0062] Rotary link assembly 510

[0063] Pivot shaft 511

[0064] Connecting column 512

[0065] Rotary link 513

[0066] Connecting lug 514

[0067] Gear assembly 520

[0068] Traction rack 521

[0069] Transmission teeth 522

[0070] Traction rod assembly 530

[0071] Towing rod 531

[0072] First rotating shaft 5311

[0073] Second rotating shaft 5312

[0074] Mounting lug 532

[0075] Avoidance groove 533

[0076] First rotating hole 534

[0077] Second rotating hole 535

[0078] First return member 540

[0079] Second return member 550 DETAILED DESCRIPTION

[0080] In order to more clearly illustrate the overall technical solutions of the present application, the following will be described in detail with reference to the accompanying drawings.

[0081] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those specifically described herein, and the scope of the present application is not limited to the specific embodiments described herein.

[0082] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0083] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two components or the interaction relationship between two components. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected only through the connection structure to form a whole. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0084] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. The illustrative representations of the above terms in the specification are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0085] The present application provides a child car safety seat which can be installed on a seat of a car for a baby or a child to sit and ensure the safety of the sitter.

[0086] As shown in Figure 1 and Figure 2 , the child car safety seat can have a base assembly 1 and a seat (not shown). The base assembly 1 can have a base 10 and a support leg 20. The seat can be rotatably arranged on the base 10 and have at least a forward position and a rearward position. The forward position can be that the seat faces the front of the car, and the rearward position can be that the seat faces the rear of the car. The forward position can be suitable for older children, for example, and the rearward position can be suitable for younger babies, for example, but the present application is not limited thereto.

[0087] The support leg 20 can be rotatably and telescopically connected to the base 10. When the support leg 20 is used, the support leg 20 can be extended out of the base 10 and turned out of contact with the ground (as shown in Figure 1 ), so that the child car safety seat can be prevented from overturning during impact. When the support leg 20 is not needed to be used, the support leg 20 can be rotated synchronously and retracted into the inside of the base 10 (as shown in Figure 2 ), so that the overall size of the child car safety seat can be reduced, and the storage and use of the child car safety seat can be facilitated.

[0088] The first embodiment of the present application will be described below mainly with reference to Figures 3-6 .

[0089] The base assembly 1 can include: the base 10; the sliding member 30 telescopically arranged on the base 10; the support leg 20 pivotally connected to the sliding member 30 and telescopically moving with the sliding member 30, and having a deployed position (as shown in Figure 1 ) when used and a folded position (as shown in Figure 2 ) when not used; and a support leg retraction structure actuating the sliding member 30 and the support leg 20 to move together towards the inside of the base 10 in response to the support leg 20 being pivoted from the deployed position to the folded position.

[0090] In the present embodiment, the support leg retracting structure can include a driving member 500 and a guide assembly (to be explained in detail below).

[0091] The base 10 can include a base bracket 160. A fixing bracket 120 can be provided on the base 10. The fixing bracket 120 and the base bracket 160 can function as a carrier. The base bracket 160 can have a frame structure, and can be formed as two parallel and symmetrical tubular members extending in the front-rear direction of the base 10. The fixing bracket 120 can connect the two tubular members of the base bracket 160.

[0092] The slider 30 can include a sliding bracket 340. The sliding bracket 340 can be fitted on the base bracket 160, and can slide a certain distance with respect to the base bracket 160. In other words, the sliding bracket 340 can also be formed as two parallel portions corresponding to the base bracket 160. As Figure 11 clearly shown in FIG. 6 (although reference will be made to Figure 11 it will be understood that Figure 11 the structure shown in FIG. 6 can be applied to various embodiments), the base bracket 160 can include a sliding rod 161, and the sliding bracket 340 can include a sliding groove 341. The sliding groove 341 is formed in an elongated shape to allow the sliding rod 161 to move a certain distance therein.

[0093] Referring to Figure 4 , the base 10 can further include an accommodation groove 170. When the support leg 20 is retracted, it can be accommodated in the accommodation groove 170, so that the support leg 20 in the retracted position does not protrude from the bottom surface of the base 10, or protrudes less from the bottom surface of the base 10. The base 10 can further include a locking member 180. The locking member 180 can be in the form of a push button, which is movably provided on the bottom surface of the base 10, and can be engaged to lock one end of the support leg 20 retracted in the accommodation groove 170. The locking member 180 can prevent the support leg 20 from being accidentally turned out to the unfolded position.

[0094] The slider 30 can further include a housing 350 connected to the sliding bracket 340. The housing 350 can be fixedly connected to the sliding bracket 340, for example, by a rivet.

[0095] The housing 350 can be provided with a protective cover 250 (refer to Figure 8 and Figure 9 ). A pivot shaft can pass through the sliding bracket 340, the protective cover 250, the driving member 500, and the support leg 20. That is, the protective cover 250 can be coaxially provided with the driving member 500. The protective cover 250 can be pivoted together with the support leg 20 to shield the gap between the support leg 20 and the housing 350 of the slider 30 when the support leg 20 is pivoted to the retracted position, preventing pinching.

[0096] The base assembly 1 further comprises a first return member 540 and a second return member 550. The first return member 540 can be formed as a tension spring, and the second return member 550 can be formed as a torsion spring, but the present application is not limited thereto. The first return member 540 can be used to move the sliding member 30 outward of the base 10.

[0097] The first return member 540 can be formed as two tension springs, which are respectively connected to the sliding bracket 340 and the base bracket 160 to exert a pulling force. When the sliding member 30 is retracted from a position protruding in front of the base 10 to a position inside the base 10 (the sliding member 30 is at least partially located inside the base 10), the first return member 540 stores energy, and when the locking member 180 releases the support leg 20 in the retracted position, the first return member 540 releases the stored energy to provide a pulling force and do work to move the sliding member 30 to the position protruding in front of the base 10.

[0098] The two ends of the second return member 550 can act on the support leg 20 and the sliding member 30. When the support leg 20 is pivoted from the unfolded position to the retracted position, the second return member 550 stores energy, and when the locking member 180 releases the support leg 20 in the retracted position, the second return member 550 releases the stored energy to provide a torsional force and do work to pivot the support leg 20 to the unfolded position.

[0099] The drive member 500 can be disposed inside the sliding member 30 and can be pivoted together with the support leg 20. As shown in Figure 3 , the guide assembly can comprise a traction member 40 and a rotating linkage assembly 510 for converting the pivoting of the drive member 500 into an actuating force for moving the sliding member 30 and the support leg 20 together towards the inside of the base 10.

[0100] As shown in Figures 3 to 4A , the traction member 40 can comprise a wire 410, a sheath 420, and a limiting boss 430. The traction member 40 can transmit the movement of one end of the traction member 40 to the other end of the traction member 40. Two limiting bosses 430 can be respectively disposed on the base 10 and the sliding member 30 to fix the two ends of the sheath 420. The sheath 420 can be flexible to change shape with the movement of the sliding member 30 relative to the base 10. The wire 410, for example, a steel wire, can be disposed in the sheath 420 and extend out of the two ends of the sheath 420. One end of the wire 410 (shown in Figure 4A ) can be connected to the traction member connecting portion 502 of the drive member 500 (for example, the front end of the drive member 500).

[0101] The outer peripheral surface of the drive member 500 can be at least partially formed as a circular arc. The drive member 500 can be formed with a traction member limiting groove 501. A portion of the wire 410 can be positioned in the traction member limiting groove 501 to prevent the wire 410 from swinging left and right when moving.

[0102] The rotating link assembly 510 may include a pivot shaft 511, a connecting post 512, a rotating link 513, and a connecting lug 514. The rotating link 513 is pivotally connected to the base 10 via the pivot shaft 511. The other end of the wire 410 ( Figure 3 511 ). The rotating link 513 may be connected to one end of the rotating link 513, i.e., to the connecting post 512. The connecting lug 514 may be fixed to the sliding bracket 340. The other end of the rotating link 513 may be connected to the connecting lug 514. The connecting lug 514 may be formed with an elongated hole, into which the other end of the rotating link 513 may be connected, so that the circular motion of the other end of the rotating link 513 is converted into the linear motion of the sliding bracket 340 along the base bracket 160. It will be understood that due to the presence of the rotating link 513, by setting the length of the rotating link 513 on both sides of the pivot axis 511, the effect of amplifying or reducing the moving distance of the wire 410 and transmitting it to the sliding bracket 340 can be achieved.

[0103] In other embodiments, other methods can be used to achieve a smaller pivoting angle of the support leg 20 to cause the sliding member 30 and the support leg 20 to move a larger distance together. For example, the rotating link assembly 510 can be replaced by a pulley assembly or other mechanism.

[0104] During the process of the support leg 20 pivoting from the unfolded position to the folded position, the pivoting of the support leg 20 drives one end of the wire 410 to move around the driving member 500 (the driving member 500 pivots with the support leg 20), and the movement is transmitted to the other end of the wire 410, thereby pulling the connecting column 512 of the rotating link assembly 510, and then causing the rotating link assembly 510 to pivot around the pivot axis 511, and finally the other end of the rotating link assembly 510 pulls the sliding bracket 340 via the connecting lug 514, so that the sliding member 30 and the support leg 20 move together toward the interior of the base 10.

[0105] It will be appreciated that the above process occurs in reverse during the process of the support leg 20 pivoting from the folded position to the deployed position.

[0106] As can be seen from the above, the base assembly 1 of this embodiment can achieve the folding process by only one step of pivoting the support leg 20, which is simple to operate and can also change the amount of force required to be applied and the distance moved by the sliding member 30 as needed.

[0107] The following will mainly refer to Figures 7-9 The second embodiment of the present application will be described.

[0108] The difference between the second embodiment of the present application and the first embodiment mainly lies in the guide assembly. The following will mainly describe the difference between the second embodiment and the first embodiment. For parts not described, please refer to the first embodiment.

[0109] like Figures 7-9As shown, the guiding assembly of the second embodiment can include a traction rack 521 and a transmission tooth 522 engaged with each other. The traction rack 521 can be disposed on the base 10 in the direction in which the sliding bracket 340 slides relative to the base bracket 160. Specifically, the traction rack 521 can be centrally disposed on the bottom of the base 10 and disposed in the front-rear direction of the base 10. The traction rack 521 can be fixed to the base 10 by, for example, a screw. The transmission tooth 522 can be formed on the outer circumferential surface of the driving member 500 to constitute at least a portion of the arc-shaped outer circumferential surface of the driving member 500. The transmission tooth 522 can be kept in engagement with the traction rack 521 and can have a length corresponding to that of the traction rack 521. The length can be equal to or greater than the distance traveled by the transmission tooth 522 on the traction rack 521 when the support leg 20 is pivoted from the unfolded position to the folded position.

[0110] During the process in which the support leg 20 is pivoted from the unfolded position to the folded position, the driving member 500 is rotated as the support leg 20 is folded. Since the transmission tooth 522 is engaged with the traction rack 521, the teeth on the traction rack 521 generate a reaction force moving inward as the driving member 500 rotates, thereby driving the driving member 500 to move toward the inside of the base 10. Since the driving member 500 is connected to the support leg 20, the support leg 20 is also driven to move toward the inside of the base 10.

[0111] It can be understood that, during the process in which the support leg 20 is pivoted from the folded position to the unfolded position, the above process occurs in reverse.

[0112] The structure of the present embodiment is stable, has good operation quality, small running resistance, and long service life.

[0113] The third embodiment of the present application will be described below mainly with reference to Figures 10-14 .

[0114] The third embodiment of the present application differs from the first embodiment mainly in the guiding assembly. The differences between the third embodiment and the first embodiment will be described mainly below, and the parts not described can be referred to the first embodiment.

[0115] As shown in Figures 10-14 , the guiding assembly of the third embodiment can include a traction rod 531. One end of the traction rod 531 is pivotally connected to the base bracket 160. The other end of the traction rod 531 is pivotally connected to the driving member 500.

[0116] As shown in Figure 12 , the traction rod 531 can include a first pivot shaft 5311 and a second pivot shaft 5312 disposed at the two ends thereof, respectively, so that the traction rod 531 can be pivoted about either end.

[0117] As shown in Figure 10As shown, the fixing frame 120 can be provided with a mounting lug 532. The outer circumferential surface of the driving member 500 can be formed with an avoiding groove 533. The avoiding groove 533 can be formed with a first rotating hole 534. The first rotating hole 534 is located at the outer edge of the driving member 500, i.e. eccentrically arranged. The mounting lug 532 can be formed with a second rotating hole 535. The other end of the traction rod 531 can be located in the avoiding groove 533. The first rotating shaft 5311 and the second rotating shaft 5312 are respectively pivotally connected to the first rotating hole 534 and the second rotating hole 535. The avoiding groove 533 can be formed so that the driving member 500 does not interfere with the traction rod 531 when the supporting leg 20 is in the unfolded position and the folded position.

[0118] Referring to Figure 11 and Figure 14 During the process that the supporting leg 20 is pivoted from the unfolded position to the folded position, the supporting leg 20 is pivoted together with the driving member 500, thereby driving the one end of the traction rod 531 to move along a circular arc around the outer circumference of the driving member 500. Since the other end of the traction rod 531 is fixed to the base bracket 160 via the mounting lug 532, the pivoting of the driving member 500 causes the sliding member 30 and the supporting leg 20 to move together towards the inside of the base 10. It can be understood that since the sliding member 30 is sleeved on the base bracket 160 via the sliding bracket 340, the sliding member 30 and the supporting leg 20 can only move along the base bracket 160.

[0119] It can be understood that during the process that the supporting leg 20 is pivoted from the folded position to the unfolded position, the above process occurs reversely.

[0120] The structure of the embodiment is simple, the components are less, the cost is lower, and the running quality is good.

[0121] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0122] While the application has been described with reference to typical embodiments, the words herein describing the application are used generically, and not in a limiting sense and various terminologies are used for explanatory purposes and thus should not be limiting. It is to be understood that the application can assume various alternative embodiments and still be within scope of the application. Accordingly, many modifications can be made by those skilled in the art without departing from the scope of the application. It is therefore intended that the application not be limited to the illustrative embodiments just described, but that it include all embodiments falling within the scope of the appended claims.

Claims

1. A base assembly characterized by, The base assembly comprises: a base; a slide member telescopically arranged in the base, a support leg pivotally connected to the slide member and telescopically arranged with the slide member, and having an unfolded position in use and a folded position in non-use; and a support leg folding structure configured to actuate the slide member and the support leg to move towards the interior of the base in response to the support leg being pivoted from the unfolded position to the folded position, the base comprises a base bracket, the slide member comprises a slide bracket, the slide bracket is sleeved on the base bracket and is slidable relative to the base bracket by a distance so that the slide member can be telescopically extended and at least partially retracted into the base, the support leg folding structure comprises a driving member and a guide assembly, wherein the driving member is arranged in the slide member and pivoted with the support leg, and the guide assembly converts the pivoting of the driving member into an actuating force for moving the slide member and the support leg towards the interior of the base, the guide assembly comprises a traction member and a rotary link, the traction member transmits the movement of one end of the traction member to the other end of the traction member, the rotary link is pivotally connected to the base, one end of the rotary link is connected to the other end of the traction member, and the other end of the rotary link is connected to the slide bracket. the traction member comprises a wire and a sheath, the sheath is fixed to the base, the sheath is flexible, the wire is arranged in the sheath, and both ends of the wire extend out of the sheath to be connected to one end of the rotary link and the support leg, respectively.

2. The base assembly of claim 1, wherein, the base assembly further comprises a protective cover coaxially arranged with the driving member to shield the gap between the support leg and the housing of the slide member when the support leg is pivoted to the folded position.

3. The base assembly of claim 1, wherein, the base assembly further comprises a first return member for moving the slide member towards the outside of the base and a second return member for pivoting the support leg from the folded position to the unfolded position.

4. The base assembly of any one of claims 1-3, wherein, an outer peripheral surface of the driving member is at least partially formed in a circular arc shape.

5. The base assembly of claim 1, wherein, The base assembly comprises:

6. A base assembly characterized by, a base; a slide member telescopically arranged in the base, a support leg pivotally connected to the slide member and telescopically arranged with the slide member, and having an unfolded position in use and a folded position in non-use; and a support leg folding structure configured to actuate the slide member and the support leg to move towards the interior of the base in response to the support leg being pivoted from the unfolded position to the folded position, the base comprises a base bracket, the slide member comprises a slide bracket, the support leg folding structure comprises a driving member and a guide assembly, the guide assembly comprises a traction rack and a transmission tooth meshing with each other, the traction rack is arranged on the base along the direction in which the slide bracket slides relative to the base bracket, and the transmission tooth is formed on an outer peripheral surface of the driving member. The base assembly is any one of claims 1 to 6. ​ 7. A child car safety seat comprising a base assembly and a seat arranged on the base assembly, characterized in that ​

Images