Reversible child carrier

Abstract

The utility model discloses a reversible child carrier which comprises two opposite side frames and a cross rod, and each side frame comprises a front foot rod, a first universal wheel, a rear foot rod, a second universal wheel, a push handle rod, a driving disc, a first locking assembly and a second locking assembly; when the push handle rod enters the first position, the driving disc tightens the second traction rope and pulls the second locking pin to exit from the locking position, the second universal wheel enters the universal state, the driving disc synchronously releases the first traction rope, and the first universal wheel enters or prepares to enter the directional state; and when the push handle rod enters the second position, the driving disc tightens the first traction rope and pulls the first locking pin to exit from the locking position, the first universal wheel enters the universal state, the driving disc synchronously releases the second traction rope, and the second universal wheel enters or prepares to enter the directional state. Reversing of the push rod and adaptation of the walking mechanism to reversing are synchronously achieved, and operation is easy and convenient; meanwhile, all parts are matched simply, production and assembly are convenient, and stability is high.

Description

Technical Field

[0001] This application relates to the field of child vehicles, and in particular to reversible child vehicles. Background Technology

[0002] Child vehicles are primarily used outdoors and during travel to transport goods or carry children. As people's lifestyles become more diverse, child vehicles also need to meet the needs of different scenarios, such as adjusting the vehicle's orientation. In existing technologies, orientation adjustment is generally achieved by adjusting the relative position of the push handle bar relative to the frame body.

[0003] To ensure smooth movement during pushing, child vehicles typically have omnidirectional wheels at the front and directional wheels at the rear. However, when changing direction, the original front wheels become rear wheels, and vice versa. Therefore, traditional walking mechanisms are insufficient for reversible child vehicles. To address this issue, existing technologies disclose corresponding locking and unlocking mechanisms to allow for separate directional unlocking and locking of the front and rear wheels, ensuring the stroller is in a state where the front wheels can freely turn while the rear wheels are directionally locked.

[0004] However, in the existing technology, the push lever reversing mechanism, the front wheel directional locking mechanism and the rear wheel directional locking mechanism all work independently. After the push lever is manually reversed, the operator still needs to manually operate the directional locking mechanisms of the front and rear wheels respectively. The whole process is cumbersome, troublesome and not simple enough, and there is room for improvement. Utility Model Content

[0005] To address the aforementioned technical problems, this application discloses a reversible child vehicle, comprising two opposing side frames and a crossbar connecting the two side frames, each side frame including:

[0006] A front support bar, the top of which is connected to a first joint, and the bottom of which is provided with a first omnidirectional wheel;

[0007] The rear foot bar has its top connected to the first joint and its bottom provided with a second omnidirectional wheel;

[0008] A push handle is hinged to the first joint. The push handle has a first position near the front leg and a second position near the rear leg. The first joint is provided with a drive disc that rotates with the swing of the push handle.

[0009] The first locking assembly includes a first locking pin movably disposed within the front foot bar, a first elastic member for holding the first locking pin in a locked position, and a first traction cable extending from the first locking pin, the other end of the first traction cable being wound around the drive disc in a first direction.

[0010] The second locking assembly includes a second locking pin movably disposed within the rear foot bar, a second elastic member for holding the second locking pin in a locked position, and a second traction cable extending from the second locking pin, the other end of the second traction cable being wound around the drive disc in a second direction, the first direction being opposite to the second direction.

[0011] When the push rod enters the first position, the drive disc tightens the second traction cable and pulls the second locking pin out of the locked position, the second universal wheel enters the universal state, the drive disc releases the first traction cable simultaneously, the first locking pin enters or prepares to enter the locked position under the action of the first elastic element, and the first universal wheel enters or prepares to enter the directional state.

[0012] When the push rod enters the second position, the drive disc tightens the first traction cable and pulls the first locking pin out of the locked position. The first omnidirectional wheel enters the omnidirectional state. The drive disc simultaneously releases the second traction cable. Under the action of the second elastic element, the second locking pin enters or is about to enter the locked position. The second omnidirectional wheel enters or is about to enter the directional state.

[0013] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0014] In one embodiment, the bottom of the front foot rod is provided with a front fixed seat, and the first universal wheel includes a first base fixed to the front fixed seat and a first rotating seat that rotates relative to the first base. The first base is provided with a first guide groove, and the first locking pin is slidably engaged with the first guide groove. In the locked position, the first locking pin protrudes from the first base and engages with the first rotating seat to realize that the first universal wheel enters the orientation state.

[0015] The bottom of the rear foot rod is provided with a rear fixed seat. The second universal wheel includes a second base fixed to the rear fixed seat and a second rotating seat that rotates relative to the second base. The second base is provided with a second guide groove. The second locking pin is slidably engaged with the second guide groove. In the locked position, the second locking pin protrudes from the second base and engages with the second rotating seat to realize that the second universal wheel enters the orientation state.

[0016] In one embodiment, the front fixing seat is hollow and forms a front receiving cavity, the first base closes the front receiving cavity, the first locking pin is located in the front receiving cavity, and the first traction cable extends from the front receiving cavity through the interior of the front foot bar to the first joint.

[0017] The rear fixing seat is hollow inside and forms a rear receiving cavity. The second base closes the rear receiving cavity. The second locking pin is located inside the rear receiving cavity. The second traction cable extends from the rear receiving cavity through the interior of the rear foot bar to the first joint.

[0018] In one embodiment, the first rotating seat and the first base are rotatably engaged by a first pivot, the first pivot passing through the first base, and the first locking pin is located on one side of the first pivot;

[0019] The second rotating seat and the second base are rotatably engaged by a second pivot, which passes through the second base, and the second locking pin is located on one side of the second pivot.

[0020] In one embodiment, the first rotating seat is provided with a first locking hole for engaging with the first locking pin. When the roller of the first universal wheel is located on the front side of the bottom of the front foot rod, the first locking hole is aligned with the first locking pin.

[0021] The second rotating seat is provided with a second locking hole for engaging with the second locking pin. When the roller of the second universal wheel is located on the rear side of the bottom of the rear foot rod, the second locking hole is aligned with the second locking pin.

[0022] In one embodiment, the first base is further provided with a first guide groove and a first stabilizer slidably disposed in the first guide groove. One end of the first stabilizer abuts against the first base through a first retainer, and the other end protrudes from the first base and abuts against the first rotating seat.

[0023] The second base is also provided with a second guide groove and a second stabilizer slidably disposed in the second guide groove. One end of the second stabilizer abuts against the second base through a second retainer, and the other end protrudes out of the second base and abuts against the second rotating seat.

[0024] In one embodiment, the first guide groove and the first guide slot are respectively located on both sides of the first pivot, and the size of the first stabilizer is larger than the size of the first lock hole;

[0025] The second guide groove and the second guide slot are located on both sides of the second pivot, and the size of the second stabilizer is larger than the size of the second lock hole.

[0026] In one embodiment, the drive disk is provided with a first drive groove for the first traction cable to pass through and a second drive groove for the second traction cable to pass through, and the first drive groove and the second drive groove are misaligned in the axial direction of the drive disk.

[0027] In one embodiment, the first joint is open in the left-right direction of the child vehicle, the bottom of the push handle closes the first joint and includes a drive shaft extending into the first joint, the drive shaft being coupled to the drive disc.

[0028] In one embodiment, the push rods of each side frame are connected by crossbars to form a U-shaped structure, and the two ends of the U-shaped structure drive the drive discs on each side frame to rotate synchronously.

[0029] The technical solution disclosed in this application synchronously drives the first locking component and the second locking component to move by a drive disc that rotates with the swing of the push handle, thereby changing the state switching of the first universal wheel and the second universal wheel, and synchronously realizing the adaptation of the push handle reversing and the traveling mechanism for reversing, which is easy to operate; at the same time, the components are simple to match, which is convenient for production and assembly and has high stability.

[0030] The specific beneficial technical effects will be further explained in the specific implementation methods in conjunction with the specific structures or steps. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a reversible child vehicle structure in one embodiment of this application;

[0032] Figure 2 for Figure 1 Diagram showing the connection between the first swivel wheel and the front support rod;

[0033] Figure 3 for Figure 2 A schematic diagram of the assembly of the components of the first omnidirectional wheel;

[0034] Figure 4 for Figure 3 A schematic diagram of the assembly of the components of the first omnidirectional wheel from another perspective;

[0035] Figure 5 for Figure 1 A top-down view of a reversible child vehicle;

[0036] Figure 6 for Figure 5 A schematic diagram of the first omnidirectional wheel in the middle, viewed from the cross-sectional perspective at point AA;

[0037] Figure 7 for Figure 5 A schematic diagram showing the second omnidirectional wheel in the configuration from the cross-sectional view at BB.

[0038] Figure 8 for Figure 5 A schematic diagram of the reversible child vehicle in the figure, viewed from the cross-sectional perspective at CC.

[0039] Figure 9 A schematic diagram showing the connection between the push rod and the first joint;

[0040] Figure 10 for Figure 9 A magnified schematic diagram of the drive disk from another perspective.

[0041] The annotations in the figure are explained as follows:

[0042] 100. Side frame; 110. Crossbar; 130. First joint;

[0043] 200. Front support rod; 210. First caster wheel; 211. First base; 2111. First guide groove; 212. First rotating seat; 213. First pivot; 214. First guide groove; 215. First stabilizer; 216. First retainer; 220. Front fixed seat;

[0044] 300. Rear foot bar; 310. Second swivel wheel; 311. Second base; 3111. Second guide groove; 312. Second rotating seat; 313. Second pivot; 314. Second guide groove; 315. Second stabilizer; 316. Second retainer; 320. Rear fixed seat;

[0045] 400, push handle; 410, drive disc; 411, first drive slot; 412, second drive slot; 420, second joint; 430, drive shaft;

[0046] 500, First locking assembly; 510, First locking pin; 520, First elastic element; 530, First traction cable;

[0047] 600, Second locking assembly; 610, Second locking pin; 620, Second elastic element; 630, Second traction cable. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] See appendix Figure 1 To be continued Figure 10 As shown, this application discloses a reversible child vehicle, including two opposing side frames 100 and a crossbar 110 connecting the two side frames 100. Each side frame 100 includes:

[0052] The front foot post 200 is connected to the first joint 130 at its top and is provided with a first universal wheel 210 at its bottom.

[0053] The rear foot bar 300 is connected to the first joint 130 at its top and a second universal wheel 310 is provided at its bottom.

[0054] The push handle 400 is hinged to the first joint 130. The push handle 400 has a first position near the front leg 200 and a second position near the rear leg 300. The first joint 130 is provided with a drive disc 410 that rotates with the push handle 400.

[0055] The first locking assembly 500 includes a first locking pin 510 movably disposed within the front foot bar 200, a first elastic member 520 for holding the first locking pin 510 in a locked position, and a first traction cable 530 extending from the first locking pin 510, the other end of the first traction cable 530 being wound around the drive disc 410 in a first direction.

[0056] The second locking assembly 600 includes a second locking pin 610 movably disposed within the rear foot bar 300, a second elastic member 620 for holding the second locking pin 610 in a locked position, and a second traction cable 630 extending from the second locking pin 610. The other end of the second traction cable 630 is wound around the drive disc 410 in a second direction, with the first direction and the second direction being opposite.

[0057] When the push lever 400 enters the first position, the drive disc 410 tightens the second traction cable 630 and pulls the second locking pin 610 out of the locked position. The second universal wheel 310 enters the universal state. The drive disc 410 simultaneously releases the first traction cable 530. The first locking pin 510 enters or is about to enter the locked position under the action of the first elastic element 520. The first universal wheel 210 enters or is about to enter the directional state.

[0058] When the push lever 400 enters the second position, the drive disc 410 tightens the first traction cable 530 and pulls the first locking pin 510 out of the locked position, and the first swivel wheel 210 enters the swivel state (see appendix). Figure 6 The drive disc 410 synchronously releases the second traction cable 630, the second locking pin 610 enters or prepares to enter the locking position under the action of the second elastic element 620, and the second omnidirectional wheel 310 enters or prepares to enter the directional state (see appendix). Figure 7 ).

[0059] The technical solution disclosed in this application synchronously drives the first locking component 500 and the second locking component 600 by the drive disc 410 rotating with the push handle 400, thereby changing the state switching of the first universal wheel 210 and the second universal wheel 310, and synchronously realizing the reversing of the push handle 400 and the adaptation of the walking mechanism to the reversing, which is easy to operate; at the same time, the components are simple to match, which is convenient for production and assembly and has high stability.

[0060] For details on the configuration of the first locking component 500, please refer to the appendix. Figure 2 To be continued Figure 6 In the illustrated embodiment, the bottom of the front support 200 is provided with a front fixed seat 220. The first omnidirectional wheel 210 includes a first base 211 fixed to the front fixed seat 220 and a first rotating seat 212 rotatable relative to the first base 211. The first base 211 is provided with a first guide groove 2111. The first locking pin 510 is slidably engaged with the first guide groove 2111. In the locked position, the first locking pin 510 protrudes from the first base 211 and engages with the first rotating seat 212 to realize that the first omnidirectional wheel 210 enters the directional state. One end of the first guide groove 2111 is open to the first base 211 and communicates with the outside, and the other end is provided with a fixing part that fixes the outer periphery of the first traction cable 530 to ensure that the first traction cable 530 can stably drive the first locking pin 510 even under stress. The first traction cable 530 includes a protective sheath located on the outer periphery and a cable body located inside the protective sheath. The fixing part fixes the protective sheath, and the cable body passes through the fixing part and connects to the first locking pin 510. The front fixing seat 220 is hollow inside, forming a front receiving cavity, which is closed by the first base 211. (See appendix) Figure 3 and appendix Figure 4 It is understood that the front receiving cavity is semi-closed and partially open through the opening. The first base 211 includes a mounting plate that mates with the opening of the front receiving cavity. The mounting plate is fixedly connected to the front fixed base 220 by fasteners. The first locking pin 510 is located inside the front receiving cavity, and the first traction cable 530 extends from the front receiving cavity through the interior of the front foot bar 200 to the first joint 130.

[0061] The first rotating seat 212 and the first base 211 are rotatably engaged by a first pivot 213, which passes through the first base 211. The first locking pin 510 is located on one side of the first pivot 213. The first rotating seat 212 is provided with a first locking hole for engaging with the first locking pin 510. When the roller of the first omnidirectional wheel 210 is located at the front side of the bottom of the front foot rod 200, the first locking hole is aligned with the first locking pin 510. When the drive disc 410 releases the first traction cable 530 but the first omnidirectional wheel 210 is not in the preset orientation position (for example, the first locking hole is not aligned with the first locking pin 510), the first locking pin 510 presses against the first rotating seat 212 under the action of the first elastic member 520, that is, the first omnidirectional wheel 210 is ready to enter the orientation state; when the child carrier is in operation and the first locking hole is aligned with the first locking pin 510, the first locking pin 510 enters the locking position under the action of the first elastic member 520, that is, the first omnidirectional wheel 210 enters the orientation state.

[0062] To prevent the first omnidirectional wheel 210 from wobbling during movement, please refer to the appendix. Figure 3 To be continued Figure 6 In the illustrated embodiment, the first base 211 is further provided with a first guide groove 214 and a first stabilizer 215 slidably disposed within the first guide groove 214. One end of the first stabilizer 215 abuts against the first base 211 via a first retainer 216, and the other end protrudes from the first base 211 and abuts against the first rotating seat 212. The first stabilizer 215 is generally elongated, and the elastic force of the first retainer 216 is applied to the first rotating seat 212 through the first stabilizer 215, eliminating the fitting gap between the first base 211 and the first rotating seat 212. To prevent the first stabilizer 215 from entering the first lock hole and causing the first universal wheel 210 to accidentally enter a directional state, the first stabilizer 215 can be configured to avoid the movement path of the first lock hole. For example, in the radial direction of the first pivot 213, the first stabilizer 215 and the first locking pin 510 are misaligned. Referring also to the accompanying drawings, the first guide groove 2111 and the first guide groove 214 are located on both sides of the first pivot 213, and the size of the first stabilizer 215 is larger than the size of the first locking hole. The first stabilizer 215 is provided with a limiting part that cooperates with the first base 211 to limit its own movement stroke.

[0063] The configuration details of the second locking component 600 can be implemented in conjunction with the first locking component 500, or independently of the first locking component 500. See Appendix. Figure 7In the illustrated embodiment, the rear support 300 has a rear fixed seat 320 at its bottom. The second omnidirectional wheel 310 includes a second base 311 fixed to the rear fixed seat 320 and a second rotating seat 312 rotatable relative to the second base 311. The second base 311 has a second guide groove 3111, and a second locking pin 610 is slidably engaged with the second guide groove 3111. In the locked position, the second locking pin 610 protrudes from the second base 311 and engages with the second rotating seat 312 to achieve the directional state of the second omnidirectional wheel 310. Furthermore, the rear fixed seat 320 is hollow inside, forming a rear receiving cavity. The second base 311 closes the rear receiving cavity, and the second locking pin 610 is located inside the rear receiving cavity. The second traction cable 630 extends from the rear receiving cavity through the interior of the rear support 300 to the first joint 130.

[0064] The second rotating seat 312 and the second base 311 are rotatably engaged by a second pivot 313, which passes through the second base 311. The second locking pin 610 is located on one side of the second pivot 313. The second rotating seat 312 is provided with a second locking hole for engaging with the second locking pin 610. When the roller of the second omnidirectional wheel 310 is located behind the bottom of the rear foot rod 300, the second locking hole is aligned with the second locking pin 610. When the drive disc 410 releases the second traction cable 630 but the second omnidirectional wheel 310 is not in the preset orientation position (for example, the second locking hole is not aligned with the second locking pin 610), the second locking pin 610 presses against the second rotating seat 312 under the action of the second elastic member 620, that is, the second omnidirectional wheel 310 is ready to enter the orientation state; when the second locking hole is aligned with the second locking pin 610 during the operation of the child carrier, the second locking pin 610 enters the locking position under the action of the second elastic member 620, that is, the second omnidirectional wheel 310 enters the orientation state.

[0065] To prevent the second omnidirectional wheel 310 from wobbling during movement, the second base 311 is also provided with a second guide groove 314 and a second stabilizer 315 slidably disposed within the second guide groove 314. The second stabilizer 315 can be implemented with reference to the arrangement of the first stabilizer 215, or it can be implemented independently. In this embodiment, one end of the second stabilizer 315 abuts against the second base 311 via the second retainer 316, and the other end protrudes from the second base 311 and abuts against the second rotating seat 312. To prevent the second stabilizer 315 from entering the second locking hole and causing the second omnidirectional wheel to accidentally enter a directional state, the second stabilizer 315 can be configured to avoid the movement path of the second locking hole. For example, in the radial direction of the second pivot 313, the second stabilizer 315 and the second locking pin 610 are misaligned. Referring also to the accompanying drawings, the second guide groove 3111 and the second guide groove 314 are respectively located on both sides of the second pivot 313, and the size of the second stabilizer 315 is larger than the size of the second locking hole.

[0066] For details on setting up drive disk 410, please refer to the appendix. Figure 8 To be continued Figure 10 In the illustrated embodiment, the drive disc 410 is provided with a first drive groove 411 for the first traction cable 530 to pass through and a second drive groove 412 for the second traction cable 630 to pass through. The ends of both the first traction cable 530 and the second traction cable 630 are engaged or inserted into the top of the drive disc 410 in the height direction. During the rotation of the drive disc 410, the first traction cable 530 and the second traction cable 630 are respectively wound into or unwound from their respective drive grooves. In the axial direction of the drive disc 410, the first drive groove 411 and the second drive groove 412 are offset to avoid interference between the traction cables. The first joint 130 is open in the left-right direction of the child vehicle. The bottom of the push handle 400 closes the first joint 130 and includes a drive shaft 430 extending into the first joint 130, which is coupled to the drive disc 410. In the figure, the bottom of the push handle 400 has a second joint 420 that opens in the left-right direction of the child carrier. The second joint 420 is engaged with the first joint 130. The drive shaft 430 extends from the inside of the second joint 420 to the inside of the first joint 130 and is inserted into the drive disc 410. The cross-sectional shape of the drive shaft 430 is non-circular. The second joint 420 has a push handle locking mechanism for locking the relative position of the push handle 400 and the first joint 130. The drive shaft 430 can be shared by components of the push handle locking mechanism, that is, the drive shaft participates in the working process of the push handle locking mechanism. The specific structure of the push handle locking mechanism can be implemented in conjunction with existing technology, and will not be described in detail here.

[0067] In the overall child vehicle, the drive discs 410 between the two side frames 100 can be interconnected. For example, the two drive discs 410 can be synchronized through the middle crossbar 110. Alternatively, referring to the embodiment shown in the attached drawings, the push handles 400 of each side frame 100 are connected by the crossbar 110 to form a U-shaped structure. The two ends of the U-shaped structure drive the drive discs 410 on each side frame 100 to rotate synchronously. A single drive disc 410 is used to control the first omnidirectional wheel 210 and the second omnidirectional wheel 310 on a single side frame 100. When the drive discs 410 on both side frames 100 rotate synchronously, the child vehicle can easily change the position of the push handle 400 and switch the state between the omnidirectional wheels, improving the user experience.

[0068] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0069] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A reversible child vehicle, comprising two opposing side frames and a crossbar connecting the two side frames, characterized in that, Each side frame includes: A front support bar, the top of which is connected to a first joint, and the bottom of which is provided with a first omnidirectional wheel; The rear foot bar has its top connected to the first joint and its bottom provided with a second omnidirectional wheel; A push handle is hinged to the first joint. The push handle has a first position near the front leg and a second position near the rear leg. The first joint is provided with a drive disc that rotates with the swing of the push handle. The first locking assembly includes a first locking pin movably disposed within the front foot bar, a first elastic member for holding the first locking pin in a locked position, and a first traction cable extending from the first locking pin, the other end of the first traction cable being wound around the drive disc in a first direction. The second locking assembly includes a second locking pin movably disposed within the rear foot bar, a second elastic member for holding the second locking pin in a locked position, and a second traction cable extending from the second locking pin, the other end of the second traction cable being wound around the drive disc in a second direction, the first direction being opposite to the second direction. When the push rod enters the first position, the drive disc tightens the second traction cable and pulls the second locking pin out of the locked position, the second universal wheel enters the universal state, the drive disc releases the first traction cable simultaneously, the first locking pin enters or prepares to enter the locked position under the action of the first elastic element, and the first universal wheel enters or prepares to enter the directional state. When the push rod enters the second position, the drive disc tightens the first traction cable and pulls the first locking pin out of the locked position. The first omnidirectional wheel enters the omnidirectional state. The drive disc simultaneously releases the second traction cable. Under the action of the second elastic element, the second locking pin enters or is about to enter the locked position. The second omnidirectional wheel enters or is about to enter the directional state.

2. The reversible child vehicle according to claim 1, characterized in that, The bottom of the front foot rod is provided with a front fixed seat. The first universal wheel includes a first base fixed to the front fixed seat and a first rotating seat that rotates relative to the first base. The first base is provided with a first guide groove. The first locking pin is slidably engaged with the first guide groove. In the locked position, the first locking pin protrudes from the first base and engages with the first rotating seat to realize that the first universal wheel enters the orientation state. The bottom of the rear foot rod is provided with a rear fixed seat. The second universal wheel includes a second base fixed to the rear fixed seat and a second rotating seat that rotates relative to the second base. The second base is provided with a second guide groove. The second locking pin is slidably engaged with the second guide groove. In the locked position, the second locking pin protrudes from the second base and engages with the second rotating seat to realize that the second universal wheel enters the orientation state.

3. The reversible child vehicle according to claim 2, characterized in that, The front fixed seat is hollow inside and forms a front receiving cavity. The first base closes the front receiving cavity. The first locking pin is located inside the front receiving cavity. The first traction cable extends from the front receiving cavity through the inside of the front foot bar to the first joint. The rear fixing seat is hollow inside and forms a rear receiving cavity. The second base closes the rear receiving cavity. The second locking pin is located inside the rear receiving cavity. The second traction cable extends from the rear receiving cavity through the interior of the rear foot bar to the first joint.

4. The reversible child vehicle according to claim 2, characterized in that, The first rotating seat and the first base are rotatably engaged by a first pivot, the first pivot passing through the first base, and the first locking pin located on one side of the first pivot; The second rotating seat and the second base are rotatably engaged by a second pivot, which passes through the second base, and the second locking pin is located on one side of the second pivot.

5. The reversible child vehicle according to claim 4, characterized in that, The first rotating seat is provided with a first locking hole for engaging with the first locking pin. When the roller of the first universal wheel is located at the front side of the bottom of the front foot rod, the first locking hole is aligned with the first locking pin. The second rotating seat is provided with a second locking hole for engaging with the second locking pin. When the roller of the second universal wheel is located on the rear side of the bottom of the rear foot rod, the second locking hole is aligned with the second locking pin.

6. The reversible child vehicle according to claim 5, characterized in that, The first base is also provided with a first guide groove and a first stabilizing member slidably disposed in the first guide groove. One end of the first stabilizing member abuts against the first base through a first retaining member, and the other end protrudes out of the first base and abuts against the first rotating seat. The second base is also provided with a second guide groove and a second stabilizer slidably disposed in the second guide groove. One end of the second stabilizer abuts against the second base through a second retainer, and the other end protrudes out of the second base and abuts against the second rotating seat.

7. The reversible child vehicle according to claim 6, characterized in that, The first guide groove and the first guide slot are respectively located on both sides of the first pivot, and the size of the first stabilizer is larger than the size of the first lock hole; The second guide groove and the second guide slot are located on both sides of the second pivot, and the size of the second stabilizer is larger than the size of the second lock hole.

8. The reversible child vehicle according to claim 1, characterized in that, The drive disk is provided with a first drive groove for the first traction cable to pass through and a second drive groove for the second traction cable to pass through. The first drive groove and the second drive groove are misaligned in the axial direction of the drive disk.

9. The reversible child vehicle according to claim 1, characterized in that, The first joint opens in the left-right direction of the child vehicle, the bottom of the push handle closes the first joint and includes a drive shaft extending into the first joint, the drive shaft being coupled to the drive disc.

10. The reversible child vehicle according to claim 1, characterized in that, The push rods of each side frame are connected by crossbars to form a U-shaped structure. The two ends of the U-shaped structure drive the drive discs on each side frame to rotate synchronously.

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