Anti-shimmy device adapted for a wheel of a child carrier

Abstract

This invention discloses an anti-sway device comprising a connecting seat, a wheel seat, a wheel core pin, and a limiting mechanism. The connecting seat is connected to a frame of a child vehicle, the wheel seat is connected to a wheel of the child vehicle, the wheel core pin is fixedly connected to one of the connecting seat and the wheel seat and rotatably connected to the other of the connecting seat, and the limiting mechanism is used to limit the sway of the wheel seat relative to the connecting seat. The limiting mechanism pushes against the wheel core pin in one axial direction of the wheel core pin.

Description

Anti-shake device for wheels of children's vehicles The present invention relates to a fitting for a children's vehicle, and more particularly to an anti-shake device for wheels of a children's vehicle. Children's vehicles (such as baby strollers) can reduce the burden on caregivers when taking children out, so they have been widely used. The movement of children's vehicles is mainly achieved by wheels. However, current children's vehicles often jolt and shake due to the shaking of the wheels when passing over uneven roads, thus affecting their riding safety and comfort. Therefore, the purpose of the present invention is to provide an anti-shake device for a wheel of a children's vehicle to solve the above problems. To achieve the above object, the present invention discloses an anti-shake device for a wheel of a children's vehicle, which includes a connecting seat, a wheel seat, a wheel core nail, and a limiting mechanism. The connecting seat is connected to a frame of the children's vehicle, the wheel seat is connected to the wheel of the children's vehicle, the wheel core nail fixedly connects one of the connecting seat and the wheel seat and rotatably connects the other of the connecting seat and the wheel seat. The limiting mechanism is used to limit the shaking of the wheel seat relative to the connecting seat, and the limiting mechanism pushes the wheel core nail along an axial direction of the wheel core nail. In summary, the limiting mechanism of the anti-shake device of the present invention can limit the shaking of the wheel seat connecting the wheel relative to the connecting seat connecting the frame. Therefore, the present invention can effectively avoid the jolting and shaking of the children's vehicle when passing over uneven roads, thereby improving the riding safety and comfort of the children's vehicle. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only references to the directions in the attached drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention. In addition, the term "connected" herein includes any direct and indirect structural connection means. Therefore, if it is described in the text that a first device is connected to a second device, it means that the first device can be directly structurally connected to the second device, or indirectly structurally connected to the second device through other devices or connection means. Please refer to FIGS. 1 to 5. FIG. 1 is an external schematic view of a child carrier 100A according to a first embodiment of the present invention. FIG. 2 is a partial structural schematic view of the child carrier 100A according to the first embodiment of the present invention. FIG. 3 is an exploded view of components of an anti-shake device 200A according to the first embodiment of the present invention. FIG. 4 is a sectional schematic view of the anti-shake device 200A according to the first embodiment of the present invention. FIG. 5 is a schematic view of a damping member 241A according to the first embodiment of the present invention. As shown in FIGS. 1 to 5, the child carrier 100A can be a baby stroller, but the present invention is not limited thereto. For example, in another embodiment, the child carrier can also be a baby playpen, a baby carrier basket, or a baby bassinet. The child carrier 100A includes a frame 101A, four wheels 102A, and two anti-shake devices 200A. The front feet of the frame 101A are connected to two wheels 102A, and the rear feet of the frame 101A are connected to the other two wheels 102A. Each anti-shake device 200A is disposed between the front foot of the frame 101A and the corresponding wheel 102A. However, the number and the installation positions of the wheels and the anti-shake devices of the present invention are not limited thereto and depend on actual requirements. For example, in another embodiment, the number of the anti-shake devices can be only one and disposed between the rear foot of the frame and the corresponding wheel. As shown in FIGS. 2 to 4, each anti-shake device 200A includes a connection seat 210A, a wheel seat 220A, a wheel core pin 230A, and a limiting mechanism 240A. The connection seat 210A is connected to the frame 101A, the wheel seat 220A is connected to the corresponding wheel 102A, and the wheel seat 220A is rotatably connected to the connection seat 210A by the wheel core pin 230A. The limiting mechanism 240A is used to limit the shaking of the wheel seat 220A relative to the connection seat 210A. Specifically, the lower end of the wheel core pin 230A is fixedly connected to the wheel seat 220A, and the upper end of the wheel core pin 230A is rotatably connected to the connection seat 210A. The limiting mechanism 240A includes a damping member 241A and a bearing 242A. The bearing 242A is disposed in the connection seat 210A so that the wheel core pin 230A can be rotatably connected to the connection seat 210A by the bearing 242A. An installation hole 211A is formed in the connection seat 210A, and the damping member 241A is fixed in the installation hole 211A. A through hole 2411A is formed in the damping member 241A, and the wheel core pin 230A passes through the through hole 2411A and is in tight fit with the damping member 241A. The damping member 241A can limit the movement of the wheel core pin 230A to limit the shaking of the wheel seat 220A relative to the connection seat 210A. More specifically, a groove 231A is formed on the wheel core nail 230A. The damping member 241A includes a protrusion 2412A. The groove 231A is located on the outer wall of the wheel core nail 230A, and the protrusion 2412A is located on the inner wall of the through hole 2411A of the damping member 241A. When the wheel core nail 230A is inserted into the through hole 2411A, the protrusion 2412A can be tightly fitted into the groove 231A to limit the rotation of the wheel core nail 230A in the horizontal direction and the vibration in the vertical direction, thereby restricting the swaying of the wheel seat 220A relative to the connection seat 210A in the horizontal and vertical directions. In addition, in this embodiment, the groove 231A can be a trapezoidal groove, and the protrusion 2412A can be a trapezoidal protrusion. The above structural settings enable the tight fit between the protrusion 2412A and the groove 231A to more effectively restrict the movement of the wheel core nail 230A in the horizontal and vertical directions. Furthermore, the limiting mechanism 240A further includes two fixing members 243A, and the two fixing members 243A are used to fixedly connect the damping member 241A to the connection seat 210A. In this embodiment, the fixing member 243A can be a locking screw. Specifically, as shown in FIGS. 4 and 5, the damping member 241A includes a main body 2413A and a neck portion 2414A provided at one end of the main body 2413A. Two shoulders 2415A are formed by protruding outward on the outer side of the neck portion 2414A. A connecting portion 2416A having a concave structure is formed between each shoulder 2415A and the main body 2413A. The two fixing members 243A pass through the connection seat 210A and are respectively inserted into the two connecting portions 2416A to fixedly connect the damping member 241A to the connection seat 210A, thereby preventing the damping member 241A from being displaced by the wheel core nail 230A and ensuring the structural stability. However, the present invention is not limited thereto. The number of fixing members, shoulders, and connecting portions can be determined according to actual design requirements. For example, in another embodiment, the limiting mechanism may only include one fixing member, and the damping member may only be formed with one shoulder and one connecting portion. In this embodiment, the anti-sway device 200A utilizes the tight fit between the protrusion 2412A protruding from the damping member 241A and the groove 231A formed on the wheel core nail 230A to limit the movement of the wheel core nail 230A in the horizontal and vertical directions, thereby restricting the swaying of the wheel seat 220A relative to the connection seat 210A in the horizontal and vertical directions. Therefore, when the children's vehicle 100A travels on an uneven road surface, it is less likely to jolt and sway, and has better riding safety and comfort. Please refer to FIGS. 6 to 8. FIG. 6 is an external schematic view of a child carrier 100B according to a second embodiment of the present invention. FIG. 7 is a partial structural schematic view of the child carrier 100B according to the second embodiment of the present invention. FIG. 8 is a cross-sectional schematic view of an anti-shaking device 200B according to the second embodiment of the present invention. As shown in FIGS. 6 to 8, the child carrier 100B includes a frame 101B, four wheels 102B, and two anti-shaking devices 200B. The front feet of the frame 101B are connected to two wheels 102B, and the rear feet of the frame 101B are connected to the other two wheels 102B. Each anti-shaking device 200B is disposed between the front foot of the frame 101B and the corresponding wheel 102B. Each anti-shaking device 200B includes a connecting seat 210B, a wheel seat 220B, a wheel core pin 230B, and a limiting mechanism 240B. The connecting seat 210B is connected to the frame 101B, the wheel seat 220B is connected to the corresponding wheel 102B. The lower end of the wheel core pin 230B is rotatably connected to the wheel seat 220B, and the upper end of the wheel core pin 230B is fixedly connected to the connecting seat 210B. A positioning hole 221B is formed in the wheel seat 220B. The limiting mechanism 240B includes an elastic member 241B and a pushing member 242B. The pushing member 242B is movably disposed in the positioning hole 221B and adjacent to the lower end of the wheel core pin 230B. The elastic member 241B is connected to the pushing member 242B. The elastic member 241B can provide an elastic force to push the wheel core pin 230B along the axial direction of the wheel core pin 230B. The elastic member 241B can drive the pushing member 242B to push the wheel core pin 230B along the axial direction of the wheel core pin 230B, thereby restricting the vibration of the wheel core pin 230B in the vertical direction, and further restricting the shaking of the wheel seat 220B relative to the connecting seat 210B in the vertical direction. In addition, in this embodiment, the elastic member 241B can be a compression spring. One side of the pushing member 242B adjacent to the wheel core pin 230B can be a planar structure, and one side of the pushing member 242B adjacent to the elastic member 241B can be a sleeve structure to sleeve the upper end of the elastic member 241B, so that the upper end of the elastic member 241B can be stably positioned. The limiting mechanism 240B can further include a positioning column 243B fixedly disposed on the wheel seat 220B. The lower end of the elastic member 241B is sleeved on the positioning column 243B, so that the lower end of the elastic member 241B can be stably positioned. The above structural settings can prevent the elastic member 241B from shifting, thereby ensuring structural stability. However, the present invention is not limited to this embodiment. Any structure that can position the elastic member belongs to the scope of the present invention. For example, in another embodiment, the positions of the sleeve structure and the positioning column can be interchanged, that is, the sleeve structure can be formed on the wheel seat, and the positioning column can be formed on one side of the pushing member adjacent to the elastic member. Or, in another embodiment, the limiting mechanism can include two positioning columns or two sleeve structures respectively disposed on the wheel seat and the pushing member. Or, in another embodiment, the positioning column and the sleeve structure can be omitted. Furthermore, as shown in FIG. 8, the limiting mechanism 240B further includes a engaging member 244B. A long hole 2441B is formed on the engaging member 244B. The wheel core pin 230B passes through the long hole 2441B. The engaging member 244B can move relative to the wheel core pin 230B along the lateral direction of the wheel core pin 230B by the cooperation of the long hole 2441B and the wheel core pin 230B, so as to push the wheel core pin 230B along the lateral direction of the wheel core pin 230B, thereby restricting the rotation of the wheel core pin 230B in the horizontal direction, and further restricting the shaking of the wheel seat 220B relative to the connecting seat 210B in the horizontal direction. In this embodiment, a groove 231B is formed on the wheel core pin 230B. The engaging member 244B includes a protrusion 2442B. When the engaging member 244B pushes the wheel core pin 230B along the lateral direction of the wheel core pin 230B, the protrusion 2442B is engaged with the groove 231B along the lateral direction of the wheel core pin 230B. The above structural arrangement can not only restrict the rotation of the wheel core pin 230B in the horizontal direction, but also realize the quick disassembly of the wheel seat 220B and the connecting seat 210B. That is to say, the user can operate the engaging member 244B to disengage the protrusion 2442B from the groove 231B to allow the wheel seat 220B and the connecting seat 210B to separate from each other. In addition, the limiting mechanism 240B further includes a reset member 245B. The reset member 245B is disposed between the wheel seat 220B and the engaging member 244B to drive the engaging member 244B to push the wheel core pin 230B along the lateral direction of the wheel core pin 230B. The reset member 245B can make the engaging member 244B always have the potential energy to push the wheel core pin 230B along the lateral direction. In this embodiment, the anti-shaking device 200B respectively uses the pushing member 242B and the engaging member 244B to restrict the vibration of the wheel core pin 230B in the vertical direction and the rotation in the horizontal direction, thereby restricting the shaking of the wheel seat 220B relative to the connecting seat 210B in the vertical direction and the horizontal direction. Therefore, when the children's vehicle 100B travels on an uneven road surface, it is less likely to jolt and shake, and has better riding safety and comfort. Please refer to FIGS. 9 to 17. FIG. 9 is a schematic partial structure diagram of a child carrier 100C according to a third embodiment of the present invention. FIG. 10 is a schematic cross-sectional partial structure diagram of the child carrier 100C according to the third embodiment of the present invention. FIGS. 11 to 14 are schematic enlarged diagrams of different partial structures of the child carrier 100C according to the third embodiment of the present invention. FIG. 15 is another schematic cross-sectional partial structure diagram of the child carrier 100C according to the third embodiment of the present invention. FIG. 16 is a schematic diagram of a fixing portion 244C according to the third embodiment of the present invention. FIG. 17 is a schematic diagram of a wheel seat body 221C according to the third embodiment of the present invention. As shown in FIGS. 9 to 17, the child carrier 100C includes a frame 101C, at least one wheel 102C, and at least one anti-shake device 200C. The anti-shake device 200C is disposed between the frame 101C and the corresponding wheel 102C. The anti-shake device 200C includes a connecting seat 210C, a wheel seat 220C, a wheel core pin 230C, and a limiting mechanism 240C. The connecting seat 210C is connected to the frame 101C. The wheel seat 220C is connected to the corresponding wheel 102C. The lower end of the wheel core pin 230C is rotatably connected to the wheel seat 220C, and the upper end of the wheel core pin 230C is fixedly connected to the connecting seat 210C. As shown in FIGS. 9, 13, 14, and 17, a long hole 2201C is formed at the lower end of the wheel seat 220C. The long hole 2201C is inclined. A wheel axle 1021C of the wheel 102C passes through the long hole 2201C and can slide in the long hole 2201C. When the wheel 102C is subjected to a vertical external force, the wheel 102C can move relative to the wheel seat 220C by the cooperation of the wheel axle 1021C and the long hole 2201C, so as to prevent the wheel 102C from driving the wheel seat 220C to shake in the vertical direction relative to the connecting seat 210C. As shown in FIGS. 9, 10, 13, 14, and 17, the wheel seat 220C includes a wheel seat body 221C and a positioning seat 222C. An accommodating groove for accommodating the positioning seat 222C is formed at the upper end of the wheel seat body 221C, and the positioning seat 222C is detachably connected to the wheel seat body 221C. In this embodiment, the wheel seat body 221C and the positioning seat 222C can be connected to each other by two locking members 223C, and the locking member 223C can be a locking screw. The wheel core pin 230C is fixedly passed through the positioning seat 222C. The limiting mechanism 240C includes a pushing member 241C. The pushing member 241C includes two positioning protrusions 2411C fixedly provided on the wheel seat body 221C. The lower end of the wheel core pin 230C protrudes from the positioning seat 222C and is clamped between the two positioning protrusions 2411C. The two positioning protrusions 2411C can push the wheel core pin 230C along the axial direction of the wheel core pin 230C, thereby restricting the vibration of the wheel core pin 230C in the vertical direction, and further restricting the shaking of the wheel seat 220C relative to the connecting seat 210C in the vertical direction. In this embodiment, the two positioning convex portions 2411C and the wheel seat body 221C can be integrally formed. A guiding surface 2412C can be formed on each positioning convex portion 2411C. A mating head 231C in the shape of a hemisphere is formed at the lower end of the wheel core nail 230C. The mating head 231C can be guided by the two guiding surfaces 2412C and inserted between the two positioning convex portions 2411C in a press-fit manner, thereby ensuring the structural stability. In addition, as shown in FIGS. 11 to 16, the limiting mechanism 240C further includes a first gear 2431C and a second gear 2432C. The first gear 2431C is sleeved on the wheel core nail 230C. The second gear 2432C is rotatably disposed on the positioning seat 222C and is rotatably engaged with the first gear 2431C. When the wheel 102C is subjected to a horizontal external force, the rotational engagement between the first gear 2431C and the second gear 2432C can limit the rotation of the wheel core nail 230C in the horizontal direction, and further limit the sway of the wheel seat 220C relative to the connection seat 210C in the horizontal direction. In this embodiment, the pitch diameter of the root circle of the first gear 2431C can be greater than that of the root circle of the second gear 2432C to achieve a better limiting effect on the rotation of the wheel core nail 230C in the horizontal direction. However, the present invention is not limited thereto. In another embodiment, the pitch diameter of the root circle of the first gear can be less than or equal to that of the root circle of the second gear. Furthermore, as shown in FIGS. 10, 11, 12, and 16, the limiting mechanism 240C further includes a fixing portion 244C. The fixing portion 244C is fixedly disposed on the connection seat 210C and is sleeved on the wheel core nail 230C. The first gear 2431C is disposed at the lower end of the fixing portion 244C. The fixing portion 244C can be integrally formed with the first gear 2431C. An accommodating cavity 245C for inserting the wheel core nail 230C is formed in the fixing portion 244C. The upper end of the fixing portion 244C is fixed to the connection seat 210C. The fixing portion 244C can be used to support the internal structure of the connection seat 210C to improve the structural stability. In this embodiment, a flat mounting portion 2441C can be formed at the upper end of the fixing portion 244C. A first mounting hole 2442C is formed on the mounting portion 2441C. A flat portion 232C can be formed at the upper end of the wheel core nail 230C. A second mounting hole 233C corresponding to the first mounting hole 2442C is formed on the flat portion 232C. The above structural arrangement enables the wheel core nail 230C and the fixing portion 244C to be fixed to the connection seat 210C by a positioning pin passing through the first mounting hole 2442C and the second mounting hole 233C. Understandably, to realize the rotational setting of the second gear 2432C, an insertion hole for inserting the gear shaft of the second gear 2432C can be formed on the positioning seat 222C. In addition, in another embodiment, a pivot pin for sleeving the second gear can also be protruded on the positioning seat. In addition, the present invention is not limited to this embodiment, and the limiting mechanism can also use at least two rotating members other than gears to limit the rotation of the wheel core nail in the horizontal direction. For example, in another embodiment, the limiting mechanism may include a cam sleeved on the wheel core nail and a plurality of turntables rotatably engaged with the cam. When the wheel is subjected to a horizontal external force, the cam can拨动 the plurality of turntables, thereby restricting the rotation of the wheel core nail in the horizontal direction. As shown in FIGS. 11 and 14, the anti-shake device 200C further includes a base 250C disposed between the connection seat 210C and the positioning seat 222C. A clamping protrusion 2221C protrudes from the positioning seat 222C. The base 250C is provided with a protective cover 251C. The second gear 2432C is located between the positioning seat 222C and the protective cover 251C. A clamping groove 2511C for the clamping protrusion 2221C to engage and an opening 2512C for the wheel core nail 230C and the first gear 2431C to pass through are formed on the protective cover 251C. In this embodiment, the anti-shake device 200C respectively uses the pushing member 241C and the rotational cooperation of the first gear 2431C and the second gear 2432C to limit the vibration of the wheel core nail 230C in the vertical direction and the rotation in the horizontal direction, thereby restricting the shaking of the wheel seat 220C relative to the connection seat 210C in the vertical and horizontal directions. In addition, the anti-shake device 200C further uses the cooperation of the wheel axle 1021C and the long hole 2201C to prevent the wheel 102C from driving the wheel seat 220C to shake relative to the connection seat 210C in the vertical direction. Therefore, when the children's vehicle 100C travels on an uneven road surface, it is less likely to jolt and shake, and has better riding safety and comfort. Please refer to FIGS. 18 to 22. FIG. 18 is a partial structural schematic diagram of a children's vehicle 100D according to a fourth embodiment of the present invention. FIG. 19 is an enlarged partial structural schematic diagram of the children's vehicle 100D according to the fourth embodiment of the present invention. FIG. 20 is a partial structural cross-sectional schematic diagram of an anti-shake device 200D according to the fourth embodiment of the present invention. FIG. 21 is an exploded view of the components of the anti-shake device 200D according to the fourth embodiment of the present invention. FIG. 22 is a schematic diagram of a damping block 244D according to the fourth embodiment of the present invention. As shown in FIGS. 18 to 22, the children's vehicle 100D includes a frame 101D, at least one wheel 102D, and at least one anti-shake device 200D. The anti-shake device 200D is disposed between the frame 101D and the corresponding wheel 102D. The anti-shake device 200D includes a connecting seat 210D, a wheel seat 220D, a wheel core pin 230D, and a limiting mechanism 240D. The connecting seat 210D is connected to the frame 101D. The wheel seat 220D is connected to the corresponding wheel 102D. The lower end of the wheel core pin 230D is rotatably connected to the wheel seat 220D. The upper end of the wheel core pin 230D is fixedly connected to the connecting seat 210D. The limiting mechanism 240D is disposed between the wheel core pin 230D and the wheel seat 220D to limit the shaking of the wheel seat 220D relative to the connecting seat 210D. Specifically, as shown in FIGS. 20 to 22, the wheel seat 220D includes a first accommodating cavity 2201D for accommodating the wheel core pin 230D and the limiting mechanism 240D, and a through hole 2202D communicating with the first accommodating cavity 2201D and for the wheel core pin 230D to pass through. The wheel core pin 230D passes through the through hole 2202D and is disposed vertically between the wheel seat 220D and the connecting seat 210D. The limiting mechanism 240D includes a bearing 241D and a mounting member 242D. The bearing 241D is disposed in the first accommodating cavity 2201D and below the through hole 2202D. The wheel core pin 230D passes through the bearing 241D to achieve the rotational connection between the wheel core pin 230D and the wheel seat 220D. The mounting member 242D is adjacent to the lower end of the wheel core pin 230D and is used to position the wheel core pin 230D in the first accommodating cavity 2201D. The mounting member 242D is fixed in the first accommodating cavity 2201D by at least one fastening member 243D. In addition, the limiting mechanism 240D further includes a damping block 244D and a reset member 245D. The damping block 244D is disposed in the first accommodating cavity 2201D and beside the lower end of the wheel core pin 230D. The damping block 244D can move relative to the wheel core pin 230D along the lateral direction of the wheel core pin 230D, so as to push the wheel core pin 230D along the lateral direction of the wheel core pin 230D, thereby restricting the rotation of the wheel core pin 230D in the horizontal direction, and further restricting the swaying of the wheel seat 220D relative to the connecting seat 210D in the horizontal direction. The reset member 245D is disposed in the first accommodating cavity 2201D and between the wheel seat 220D and the damping block 244D to drive the damping block 244D to push the wheel core pin 230D along the lateral direction of the wheel core pin 230D. Specifically, the damping block 244D can be made of rubber or plastic material, the reset member can be a spring, the limiting mechanism 240D can further include a positioning post 246D. The positioning post 246D is fixedly disposed on the damping block 244D, and the reset member 245D is sleeved on the positioning post 246D. However, the present invention is not limited to this embodiment and depends on actual requirements. For example, in another embodiment, the positioning post can be formed on the wheel seat. Or, in another embodiment, the limiting mechanism can include two positioning posts respectively fixedly disposed on the damping block and the wheel seat. Or, in another embodiment, the positioning post can also be omitted. In this embodiment, a groove 231D is formed on the wheel core pin 230D. The damping block 244D includes a protrusion 2441D, and when the damping block 244D pushes the wheel core pin 230D along the lateral direction of the wheel core pin 230D, the protrusion 2441D is engaged with the groove 231D along the lateral direction of the wheel core pin 230D. Specifically, the groove 231D can be an annular groove, the end face of the damping block 244D close to the wheel core pin 230D can be an arc surface, and the protrusion 2441D can be disposed on the arc surface. In addition, the anti-shake device 200D further includes a buffer member 250D. The buffer member 250D is arranged in parallel with the wheel core nail 230D and installed between the wheel 102D and the wheel seat 220D. Specifically, the wheel seat 220D further includes a second accommodation cavity 2203D and two slots 2204D that communicate with the second accommodation cavity 2203D and are used for the wheel axle of the wheel 102D to pass through. The anti-shake device 200D further includes a support block 260D. The buffer member 250D and the support block 260D are arranged in the second accommodation cavity 2203D. The support block 260D is located on the wheel axle of the wheel 102D. The buffer member 250D is arranged between the support block 260D and the top wall of the second accommodation cavity 2203D to prevent the wheel 102D from driving the wheel seat 220D to move in the vertical direction, thereby restricting the shaking of the wheel seat 220D relative to the connection seat 210D in the vertical direction. However, the present invention is not limited to this embodiment. For example, in another embodiment, a support portion for abutting one end of the buffer member and connecting the wheel axle of the wheel may be integrally extended below the second accommodation cavity. In addition, the anti-shake device 200D further includes a first connector 270D and a second connector 280D. The first connector 270D is pivotally connected to the second connector 280D. The second connector 280D is pivotally connected to the wheel seat 220D by the wheel axle of the wheel 102D. Specifically, the second connector 280D has an accommodation cavity 281D to accommodate an outer periphery 2205D of the second accommodation cavity 2203D of the wheel seat 220D. In this embodiment, the anti-shake device 200D uses the damping block 244D to restrict the rotation of the wheel core nail 230D in the horizontal direction, thereby restricting the shaking of the wheel seat 220D relative to the connection seat 210D in the horizontal direction. In addition, the anti-shake device 200D uses the buffer member 250D to prevent the wheel 102D from driving the wheel seat 220D to shake relative to the connection seat 210D in the vertical direction. Therefore, when the children's vehicle 100D travels on an uneven road surface, it is less likely to jolt and shake, and has better riding safety and comfort. Please refer to FIGS. 23 to 27. FIG. 23 is a schematic diagram of a partial structure of a children's vehicle 100E according to a fifth embodiment of the present invention. FIG. 24 is an enlarged schematic diagram of a partial structure of part A of the children's vehicle 100E as shown in FIG. 23 according to the fifth embodiment of the present invention. FIG. 25 is an exploded view of components of an anti-shake device 200E according to the fifth embodiment of the present invention. FIG. 26 is a schematic sectional view of a partial structure of the children's vehicle 100E according to the fifth embodiment of the present invention. FIG. 27 is an enlarged schematic diagram of a partial structure of part B of the children's vehicle 100E as shown in FIG. 26 according to the fifth embodiment of the present invention. As shown in FIGS. 23 to 27, the children's vehicle 100E includes a frame 101E, at least one wheel 102E, and at least one anti-shake device 200E. The anti-shake device 200E is disposed between the frame 101E and the corresponding wheel 102E. The anti-shake device 200E includes a connection seat 210E, a wheel seat 220E, a wheel core pin 230E, and a limiting mechanism 240E. The connection seat 210E is connected to the frame 101E. The wheel seat 220E is connected to the corresponding wheel 102E. The lower end of the wheel core pin 230E is rotatably connected to the wheel seat 220E, and the upper end of the wheel core pin 230E is fixedly connected to the connection seat 210E. The limiting mechanism 240E is used to limit the shaking of the wheel seat 220E relative to the connection seat 210E. Specifically, as shown in FIGS. 25 and 27, the limiting mechanism 240E includes a rotating sleeve 241E and a damping piece 242E. The rotating sleeve 241E is fixedly disposed on the wheel seat 220E. The wheel core pin 230E passes through the rotating sleeve 241E and is rotatable relative to the rotating sleeve 241E to achieve the rotational connection between the wheel core pin 230E and the wheel seat 220E. The damping piece 242E is disposed on the wheel core pin 230E and can push against the rotating sleeve 241E along the axial direction of the wheel core pin 230E to limit the vibration of the wheel core pin 230E in the vertical direction, thereby limiting the shaking of the wheel seat 220E relative to the connection seat 210E in the vertical direction. In this embodiment, the wheel core nail 230E includes a limiting portion 231E and an extending portion 232E. The rotating sleeve 241E includes a through hole for inserting the extending portion 232E. The limiting portion 231E is used to limit the distance that the extending portion 232E inserts into the through hole. The damping piece 242E is located between the limiting portion 231E and the rotating sleeve 241E. The extending portion 232E passes through the through hole and is connected to the connecting seat 210E. Furthermore, the rotating sleeve 241E further includes an abutting portion 2411E and a rotating portion 2412E. The wheel seat 220E includes an installation hole 221E for inserting the extending portion 232E and the rotating portion 2412E. The rotating portion 2412E is located between the extending portion 232E and the wheel seat 220E. The abutting portion 2411E and the limiting portion 231E are exposed outside the installation hole 221E. The damping piece 242E is located between the abutting portion 2411E and the limiting portion 231E. The abutting portion 2411E can abut against the wheel seat 220E in the vertical direction, and the damping piece 242E can abut against the abutting portion 2411E in the vertical direction. Therefore, the shaking of the wheel seat 220E relative to the connecting seat 210E in the vertical direction can be effectively restricted. In this embodiment, the wheel core nail 230E can be a hollow tubular structure to achieve the purpose of weight reduction. In addition, the rotating sleeve 241E can be made of plastic material, so that the rotating sleeve 241E has a certain degree of elasticity and the abutting portion 2411E and the rotating portion 2412E are integrally formed. In addition, as shown in FIGS. 25 and 26, the limiting mechanism 240E further includes a baffle 243E. The baffle 243E is located above the rotating sleeve 241E. The wheel core nail 230E penetrates through the baffle 243E. The baffle 243E is located between the rotating sleeve 241E and the connecting seat 210E and between the wheel seat 220E and the connecting seat 210E, so as to limit the shaking of the wheel seat 220E relative to the connecting seat 210E in the horizontal direction. In addition, the anti-shaking device 200E further includes a braking member 250E and a shock-absorbing portion 260E. When the braking member 250E is operated, it can abut against the wheel 102E to decelerate the wheel 102E. The shock-absorbing portion 260E is located below the braking member 250E and has elasticity to prevent the wheel 102E from driving the wheel seat 220E to shake relative to the connecting seat 210E in the vertical direction. In this embodiment, the shock-absorbing portion 260E can be made of plastic material, and at least one buffer portion 261E in an elliptical shape can be formed on the shock-absorbing portion 260E to improve the shock-absorbing effect of the shock-absorbing portion 260E. However, the present invention is not limited thereto. For example, in another embodiment, the buffer portion can also be circular or quadrilateral. In this embodiment, the anti-shake device 200E uses a damping piece 242E and a baffle 243E to respectively limit the shaking of the wheel seat 220E relative to the connection seat 210E in the vertical and horizontal directions. In addition, the anti-shake device 200E uses a shock-absorbing part 260E to prevent the wheel 102E from driving the wheel seat 220E to shake relative to the connection seat 210E in the vertical direction. Therefore, when the child carrier 100E travels on an uneven road surface, it is less likely to jolt and shake, and has better riding safety and comfort. Please refer to FIGS. 28 to 30. FIG. 28 is a partial structural schematic diagram of a child carrier 100F according to a sixth embodiment of the present invention. FIG. 29 is an enlarged schematic diagram of part C of the child carrier 100F shown in FIG. 28 according to the sixth embodiment of the present invention. FIG. 30 is a schematic diagram of a socket part 241F according to the sixth embodiment of the present invention. As shown in FIGS. 28 to 30, the child carrier 100F includes a frame, at least one wheel 102F, and at least one anti-shake device 200F. The anti-shake device 200F is disposed between the frame and the corresponding wheel 102F. The anti-shake device 200F includes a connection seat 210F, a wheel seat 220F, a wheel core pin 230F, and a limiting mechanism 240F. The connection seat 210F is connected to the frame. The wheel seat 220F is connected to the corresponding wheel 102F. The lower end of the wheel core pin 230F is fixedly connected to the wheel seat 220F. The upper end of the wheel core pin 230F is rotatably connected to the connection seat 210F. The limiting mechanism 240F is used to limit the shaking of the wheel seat 220F relative to the connection seat 210F. Specifically, as shown in FIG. 30, the limiting mechanism 240F includes a socket part 241F. The socket part 241F is fixedly disposed on the connection seat 210F and sleeved on the wheel core pin 230F. At least one notch 2411F is formed on the wall surface of the socket part 241F. The inner diameter of the socket part 241F is smaller than the outer diameter of the wheel core pin 230F. So that when the socket part 241F is sleeved on the wheel core pin 230F, the socket part 241F is pushed open by the wheel core pin 230F and elastically clamps the wheel core pin 230F to limit the rotation of the wheel core pin 230F in the horizontal direction, thereby limiting the shaking of the wheel seat 220F relative to the connection seat 210F in the horizontal direction. In addition, as shown in FIG. 29, the anti-shake device 200F further includes a buffer part 250F. The buffer part 250F is disposed between the wheel seat 220F and the connection seat 210F to prevent the connection seat 210F from being driven by the wheel seat 220F and shaking in the vertical direction. In this embodiment, the anti-shake device 200F uses the socket part 241F to limit the rotation of the wheel core nail 230F in the horizontal direction, thereby restricting the horizontal shaking of the wheel seat 220F relative to the connection seat 210F. In addition, the anti-shake device 200F uses the buffer part 250F to prevent the connection seat 210F from being driven by the wheel seat 220F and shaking in the vertical direction. Therefore, when the child carrier 100F travels on an uneven road surface, it is less likely to jolt and shake, and has better riding safety and comfort. Please refer to FIGS. 31 to 35. FIG. 31 is a schematic diagram of a partial structure of a child carrier 100G according to a seventh embodiment of the present invention. FIG. 32 is an enlarged schematic diagram of a partial structure of the child carrier 100G according to the seventh embodiment of the present invention. FIG. 33 is another enlarged schematic diagram of a partial structure of the child carrier 100G according to the seventh embodiment of the present invention. FIG. 34 is an exploded view of partial structural components of the child carrier 100G according to the seventh embodiment of the present invention. FIG. 35 is a schematic sectional view of a partial structure of the child carrier 100G according to the seventh embodiment of the present invention. As shown in FIGS. 31 to 35, the child carrier 100G includes a frame 101G, at least one wheel 102G, and at least one anti-shake device 200G. The anti-shake device 200G is disposed between the frame 101G and the corresponding wheel 102G. The anti-shake device 200G includes a connection seat 210G, a wheel seat 220G, a wheel core nail 230G, and a limiting mechanism 240G. The connection seat 210G is connected to the frame 101G. The wheel seat 220G is connected to the corresponding wheel 102G. The lower end of the wheel core nail 230G is fixedly connected to the wheel seat 220G, and the upper end of the wheel core nail 230G is rotatably connected to the connection seat 210G. The limiting mechanism 240G is used to limit the shaking of the wheel seat 220G relative to the connection seat 210G. Specifically, the limiting mechanism 240G includes two bearings 241G. The two bearings 241G are fixedly disposed on the connection seat 210G. The wheel core nail 230G passes through the two bearings 241G to achieve the rotational connection between the wheel core nail 230G and the connection seat 210G. The limiting mechanism 240G further includes a sleeve 242G and an elastic member 243G. The sleeve 242G is movably disposed on the connection seat 210G and sleeved on the wheel core nail 230G, and the elastic member 243G is disposed between the connection seat 210G and the sleeve 242G to drive the sleeve 242G to push against the wheel core nail 230G along the lateral direction of the wheel core nail 230G to limit the rotation of the wheel core nail 230G in the horizontal direction, thereby restricting the horizontal shaking of the wheel seat 220G relative to the connection seat 210G. However, the present invention is not limited to this embodiment. In another embodiment, the limiting mechanism may include only one bearing. More specifically, as shown in FIGS. 34 and 35, the connecting seat 210G includes a seat body 211G, an operating member 212G, and an engaging member 213G. The bushing 242G, the bearing 241G, and the wheel core nail 230G are disposed within the seat body 211G. The bushing 242G is located between the two bearings 241G. The operating member 212G and the engaging member 213G are movably disposed within the seat body 211G and are interlocked with each other. The engaging member 213G passes through the seat body 211G to engage with the wheel core nail 230G. The operating member 212G can drive the engaging member 213G to disengage from the wheel core nail 230G. A positioning post 2421G protrudes from the bushing 242G. One end of the elastic member 243G is sleeved on the positioning post 2421G. Another positioning post 2121G protrudes from the operating member 212G. The other end of the elastic member 243G is sleeved on the positioning post 2121G. Furthermore, as shown in FIGS. 32 to 34, the limiting mechanism 240G further includes an abutting member 244G, and the abutting member 244G is disposed between the connecting seat 210G and the wheel seat 220G. Specifically, the abutting member 244G is disposed on the wheel seat 220G and protrudes from a plane 221G of the wheel seat 220G. The abutting member 244G is used to abut against a plane 214G of the connecting seat 210G close to the wheel seat 220G to prevent the plane 214G from directly contacting the plane 221G. This not only reduces the friction area between the plane 214G and the plane 221G but also reduces the noise generated when the wheel seat 220G moves relative to the connecting seat 210G. In this embodiment, the anti-shaking device 200G uses the bushing 242G to limit the rotation of the wheel core nail 230G in the horizontal direction, thereby restricting the horizontal shaking of the wheel seat 220G relative to the connecting seat 210G. Therefore, when the child carrier 100G travels on an uneven road surface, it is less likely to jolt and shake, and has better riding safety and comfort. In addition, the anti-shaking device 200G also uses the abutting member 244G to prevent the plane 214G from directly contacting the plane 221G, thereby reducing the friction area between the plane 214G and the plane 221G and reducing the noise generated when the wheel seat 220G moves relative to the connecting seat 210G. Please refer to FIGS. 36 to 40. FIG. 36 is an external schematic view of a children's vehicle 100H according to an eighth embodiment of the present invention. FIG. 37 is a partial structural schematic view of the children's vehicle 100H according to the eighth embodiment of the present invention. FIG. 38 is an exploded view of partial structural components of the children's vehicle 100H according to the eighth embodiment of the present invention. FIG. 39 is a partial internal structural schematic view of the children's vehicle 100H according to the eighth embodiment of the present invention. FIG. 40 is another partial internal structural schematic view of the children's vehicle 100H according to the eighth embodiment of the present invention. As shown in FIGS. 36 to 40, the children's vehicle 100H includes a frame 101H, at least one wheel 102H, and at least one anti-shake device 200H. The anti-shake device 200H is disposed between the frame 101H and the corresponding wheel 102H. The anti-shake device 200H includes a connection seat 210H, a wheel seat 220H, a wheel core nail 230H, and a limiting mechanism 240H. The connection seat 210H is connected to the frame 101H. The wheel seat 220H is connected to the corresponding wheel 102H. The lower end of the wheel core nail 230H is fixedly connected to the wheel seat 220H. The upper end of the wheel core nail 230H is rotatably connected to the connection seat 210H. The limiting mechanism 240H is used to limit the shaking of the wheel seat 220H relative to the connection seat 210H. Specifically, the limiting mechanism 240H includes a fixed seat 241H. The fixed seat 241H is fixedly connected to the wheel seat 220H and sleeved on the wheel core nail 230H to achieve the fixed connection between the wheel core nail 230H and the wheel seat 220H. An accommodation hole 211H is formed on the connection seat 210H. The fixed seat 241H is at least partially disposed in the accommodation hole 211H and can rotate relative to the accommodation hole 211H to achieve the rotational connection between the wheel core nail 230H and the connection seat 210H. The fixed seat 241H is tightly fitted in the accommodation hole 211H to use the frictional force between the fixed seat 241H and the hole wall of the accommodation hole 211H to limit the rotation of the wheel core nail 230H in the horizontal direction, thereby limiting the shaking of the wheel seat 220H relative to the connection seat 210H in the horizontal direction. More specifically, as shown in FIGS. 38 to 40, the fixing base 241H includes a fixing body 2411H and two elastic abutting portions 2412H disposed on the fixing body 2411H. Preferably, in this embodiment, the fixing body 2411H can be fixedly connected to the wheel base 220H by two fastening members 2413H, where the fastening members 2413H can be locking screws, and the two elastic abutting portions 2412H can be two elastic pieces mounted on the fixing body 2411H and opposite to each other. When the fixing base 241H is tightly fitted into the receiving hole 211H, the two elastic abutting portions 2412H abut against the hole wall of the receiving hole 211H and are elastically deformed under the extrusion of the hole wall of the receiving hole 211H. The frictional force generated between the elastic abutting portion 2412H and the hole wall of the receiving hole 211H can effectively limit the rotation of the wheel core pin 230H in the horizontal direction, thereby restricting the horizontal晃动 of the wheel base 220H relative to the connecting base 210H. However, the present invention is not limited to this embodiment. In another embodiment, the fixing base may only include one elastic abutting portion, and the elastic abutting portion may be a rubber protrusion. In this embodiment, the anti-晃动 device 200H uses the frictional force between the fixing base 241H and the receiving hole 211H to limit the rotation of the wheel core pin 230H in the horizontal direction, thereby restricting the horizontal晃动 of the wheel base 220H relative to the connecting base 210H. Therefore, when the children's vehicle 100H travels on an uneven road surface, it is less likely to颠簸 and摇晃, and has better riding safety and comfort. In addition, in another embodiment, the children's vehicle may also adopt the anti-晃动 devices of different embodiments at the same time. For example, anti-晃动 devices of different embodiments may be provided between different wheels and the frame of the children's vehicle, depending on actual needs. Compared with the prior art, the limiting mechanism of the anti-晃动 device of the present invention can limit the晃动 of the wheel base connecting the wheels relative to the connecting base of the connecting frame. Therefore, the present invention can effectively avoid the颠簸 and摇晃 of the children's vehicle when traveling on an uneven road surface, thereby improving the riding safety and comfort of the children's vehicle. The above is only the preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention. 100A, 100B, 100C, 100D, 100E, 100F, 100G, 100H: Child carrier 101A, 101B, 101C, 101D, 101E, 101G, 101H: Frame 1021C: Axle 102A, 102B, 102C, 102D, 102E, 102F, 102G, 102H: Wheel 200A, 200B, 200C, 200D, 200E, 200F, 200G, 200H: Anti - sway device 210A, 210B, 210C, 210D, 210E, 210F, 210G, 210H: Connecting seat 211A, 221E: Mounting hole 211G: Seat body 211H: Accommodating hole 212G: Operating part 213G: Engaging part 2201D: First accommodating cavity 2202D: Through - hole 2203D: Second accommodating cavity 2204D: Slot 2205D: Outer periphery 220A, 220B, 220C, 220D, 220E, 220F, 220G, 220H: Wheel seat 221B: Positioning hole 221C: Wheel seat body 221G, 214G: Plane 2221C: Snap projection 222C: Positioning seat 223C, 2413H: Fastening member 230A, 230B, 230C, 230D, 230E, 230F, 230G, 230H: Wheel core nail 231A, 231B, 231D: Groove 231C: Fitting head 231E: Limiting part 232C: Flat part 232E: Extension part 233C: Second mounting hole 240A, 240B, 240C, 240D, 240E, 240F, 240G, 240H: Limiting mechanism 2411A: Perforation 2411C: Positioning convex part 2411E: Abutting part 2411F: Notch 2412A, 2442B, 2441D: Protrusion 2412C: Guide surface 2412E: Rotating part 2413A: Main body 2414A: Neck part 2415A: Shoulder 2416A: Connecting part 241A: Damper 241B, 243G: Elastic part 241E: Rotating sleeve 241F: Socket part 241H: Fixed seat 2411H: Fixed body 2412H: Elastic abutting part 242A, 241D, 241G: Bearing 242B, 241C: Pushing part 242D: Mounting part 242E: Damper plate 242G: Bush 2431C: First gear 2432C: Second gear 243A: Fixed part 243B, 246D, 2121G, 2421G: Positioning column 243D: Fastening member 243E: Baffle 2441B, 2201C: Long hole 2441C: Mounting part 2442C: First mounting hole 244B: Engaging part 244C: Fixed part 244D: Damper block 244G: Abutting part 245B, 245D: Reset part 245C,281D: Accommodation cavity 250C: Base 250D, 250F: Buffer member 250E: Brake member 2511C: Card slot 2512C: Opening 251C: Protective cover 260D: Support block 260E: Shock-absorbing part 261E: Buffer part 270D: First connecting piece 280D: Second connecting piece, FIG. 1 is an external schematic view of a children's vehicle according to a first embodiment of the present invention. FIG. 2 is a partial structural schematic view of the children's vehicle according to the first embodiment of the present invention. FIG. 3 is an exploded view of components of an anti-shake device according to the first embodiment of the present invention. FIG. 4 is a sectional schematic view of the anti-shake device according to the first embodiment of the present invention. FIG. 5 is a schematic view of a damping member according to the first embodiment of the present invention. FIG. 6 is an external schematic view of a children's vehicle according to a second embodiment of the present invention. FIG. 7 is a partial structural schematic view of the children's vehicle according to the second embodiment of the present invention. FIG. 8 is a sectional schematic view of the anti-shake device according to the second embodiment of the present invention. FIG. 9 is a partial structural schematic view of a children's vehicle according to a third embodiment of the present invention. FIG. 10 is a partial structural sectional schematic view of the children's vehicle according to the third embodiment of the present invention. FIGS. 11 to 14 are enlarged schematic views of different parts of the structure of the children's vehicle according to the third embodiment of the present invention. FIG. 15 is another partial structural sectional schematic view of the children's vehicle according to the third embodiment of the present invention. FIG. 16 is a schematic view of a fixing portion according to the third embodiment of the present invention. FIG. 17 is a schematic view of a wheel seat body according to the third embodiment of the present invention. FIG. 18 is a partial structural schematic view of a children's vehicle according to a fourth embodiment of the present invention. FIG. 19 is an enlarged partial structural schematic view of the children's vehicle according to the fourth embodiment of the present invention. FIG. 20 is a partial structural sectional schematic view of the anti-shake device according to the fourth embodiment of the present invention. FIG. 21 is an exploded view of components of the anti-shake device according to the fourth embodiment of the present invention. FIG. 22 is a schematic view of a damping block according to the fourth embodiment of the present invention. FIG. 23 is a partial structural schematic view of a children's vehicle according to a fifth embodiment of the present invention. FIG. 24 is an enlarged schematic view of part A of the children's vehicle as shown in FIG. 23 according to the fifth embodiment of the present invention. FIG. 25 is an exploded view of components of the anti-shake device according to the fifth embodiment of the present invention. FIG. 26 is a partial structural sectional schematic view of the children's vehicle according to the fifth embodiment of the present invention. FIG. 27 is an enlarged schematic view of part B of the children's vehicle as shown in FIG. 26 according to the fifth embodiment of the present invention. FIG. 28 is a partial structural schematic view of a children's vehicle according to a sixth embodiment of the present invention. FIG. 29 is an enlarged schematic view of part C of the children's vehicle as shown in FIG. 28 according to the sixth embodiment of the present invention. FIG. 30 is a schematic view of a socket member according to the sixth embodiment of the present invention. FIG. 31 is a partial structural schematic view of a children's vehicle according to a seventh embodiment of the present invention. FIG. 32 is an enlarged partial structural schematic view of the children's vehicle according to the seventh embodiment of the present invention. FIG. 33 is another enlarged partial structural schematic view of the children's vehicle according to the seventh embodiment of the present invention. FIG. 34 is an exploded view of components of part of the structure of the children's vehicle according to the seventh embodiment of the present invention. FIG. 35 is a partial structural sectional schematic view of the children's vehicle according to the seventh embodiment of the present invention. FIG. 36 is an external schematic view of a children's vehicle according to an eighth embodiment of the present invention. FIG. 37 is a partial structural schematic view of the children's vehicle according to the eighth embodiment of the present invention. FIG. 38 is an exploded view of components of part of the structure of the children's vehicle according to the eighth embodiment of the present invention. FIG. 39 is a schematic view of the internal structure of part of the children's vehicle according to the eighth embodiment of the present invention.Figure 40 is a schematic diagram of the internal structure of another part of the children's vehicle according to the eighth embodiment of the present invention. 200B: Anti-shake device 210B: Connecting seat 220B: Wheel seat 221B: Positioning hole 230B: Wheel core nail 231B: Groove 240B: Limiting mechanism 2412B: Protrusion 241B: Elastic member 242B: Pushing member 243B: Positioning post 2441B: Long hole 244B: Engaging member 245B: Reset member

Claims

1. An anti-sway device for a wheel of a child vehicle, comprising: a connecting seat connected to a frame of the child vehicle; a wheel seat connected to the wheel of the child vehicle; a wheel spike fixedly connected to one of the connecting seat and the wheel seat and rotatably connected to the other of the connecting seat and the wheel seat; and a limiting mechanism for limiting the sway of the wheel seat relative to the connecting seat, the limiting mechanism pushing the wheel spike in an axial direction along one of the wheel spikes; wherein the limiting mechanism includes a pushing member movably disposed on the other of the connecting seat and the wheel seat, the pushing member pushing the wheel spike in an axial direction along one of the wheel spikes.

2. The anti-sway device as described in claim 1, wherein the limiting mechanism further includes an elastic member, and the elastic member is connected to the push member to drive the push member to push against the wheel core nail.

3. The anti-sway device as described in any one of claims 1 to 2, wherein the limiting mechanism pushes the wheel core pin in a lateral direction along one side of the wheel core pin.

4. The anti-sway device as described in claim 3, wherein the limiting mechanism further includes a locking member, the locking member being movably disposed on the other of the connecting seat and the wheel seat, the locking member abutting against the wheel core pin in the lateral direction of the wheel core pin.

5. The anti-sway device as claimed in claim 4, wherein an elongated hole is formed on the engaging member, the wheel core pin passes through the elongated hole, and the engaging member can move relative to the wheel core pin in the lateral direction of the wheel core pin by means of the engagement of the elongated hole and the wheel core pin, thereby pushing the wheel core pin in the lateral direction of the wheel core pin.

6. The anti-sway device as claimed in claim 4, wherein a groove is formed on the wheel core pin, the engaging member includes a protrusion, and when the engaging member pushes against the wheel core pin in the lateral direction of the wheel core pin, the protrusion engages with the groove in the lateral direction of the wheel core pin.

7. The anti-sway device as described in claim 4, wherein the limiting mechanism further includes a reset member, and the reset member is disposed between the other of the connecting seat and the wheel seat and the engaging member, so as to drive the engaging member to push the wheel core nail in the lateral direction of the wheel core nail.

8. The anti-sway device as described in claim 2, wherein the limiting mechanism further includes at least one positioning post, the at least one positioning post being fixedly disposed on the other of the connecting seat and the wheel seat and / or the pushing member, and the elastic member being sleeved on the at least one positioning post; or the limiting mechanism further includes at least one sleeve structure, the at least one sleeve structure being fixedly disposed on the side of the other of the connecting seat and the wheel seat adjacent to the elastic member and / or the side of the pushing member adjacent to the elastic member, and the at least one sleeve structure being sleeved on the elastic member.

9. The anti-sway device as claimed in claim 1, wherein a lower end of the wheel core pin is rotatably connected to the wheel seat, an upper end of the wheel core pin is fixedly connected to the connecting seat, a positioning hole is formed in the wheel seat, and the pusher is movably disposed in the positioning hole and adjacent to the lower end of the wheel core pin.

10. An anti-sway device for a wheel of a child vehicle, comprising: a connecting seat connected to a frame of the child vehicle; a wheel seat connected to the wheel of the child vehicle; a wheel spike fixedly connected to one of the connecting seat and the wheel seat and rotatably connected to the other of the connecting seat and the wheel seat; and a limiting mechanism for limiting the sway of the wheel seat relative to the connecting seat, the limiting mechanism abutting the wheel spike in an axial direction; wherein the limiting mechanism abuts the wheel spike in a lateral direction; wherein the limiting mechanism further comprises an engaging member movably disposed on the other of the connecting seat and the wheel seat, the engaging member abutting the wheel spike in the lateral direction; The engaging component has an elongated hole through which the wheel core pin passes. The engaging component can move relative to the wheel core pin along the lateral direction of the wheel core pin by means of the engagement between the elongated hole and the wheel core pin, thereby pushing the wheel core pin along the lateral direction of the wheel core pin.

11. An anti-sway device for a wheel of a child vehicle, comprising: a connecting seat connected to a frame of the child vehicle; a wheel seat connected to the wheel of the child vehicle; a wheel spike fixedly connected to one of the connecting seat and the wheel seat and rotatably connected to the other of the connecting seat and the wheel seat; and a limiting mechanism for limiting the sway of the wheel seat relative to the connecting seat, the limiting mechanism abutting the wheel spike in an axial direction; wherein the limiting mechanism abuts the wheel spike in a lateral direction; wherein the limiting mechanism further comprises an engaging member movably disposed on the other of the connecting seat and the wheel seat, the engaging member abutting the wheel spike in the lateral direction of the wheel spike; The wheel core nail has a groove, and the engaging member includes a protrusion. When the engaging member pushes against the wheel core nail in the lateral direction, the protrusion engages with the groove in the lateral direction of the wheel core nail.

12. An anti-sway device for a wheel of a child vehicle, comprising: a connecting seat connected to a frame of the child vehicle; a wheel seat connected to the wheel of the child vehicle; a wheel spike fixedly connected to one of the connecting seat and the wheel seat and rotatably connected to the other of the connecting seat and the wheel seat; and a limiting mechanism for limiting the sway of the wheel seat relative to the connecting seat, the limiting mechanism pushing the wheel spike in an axial direction; wherein the limiting mechanism pushes the wheel spike in a lateral direction; wherein the limiting mechanism further comprises a locking member movably disposed on the other of the connecting seat and the wheel seat, the locking member pushing the wheel spike in the lateral direction; The limiting mechanism further includes a reset member, which is disposed between the connecting seat and the other of the wheel seat and the engaging member, so as to drive the engaging member to push the wheel core nail in the lateral direction of the wheel core nail.

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