A child vehicle

Abstract

This invention discloses a child carrier with a first and second interchangeable usage state, comprising a carrier body, a joint assembly, a front leg assembly, and a rear leg assembly. When the rear leg assembly rotates clockwise relative to the carrier body around a pivot, the front leg assembly rotates clockwise relative to the carrier body via the joint assembly. The upper end of the rear leg assembly then causes the front leg assembly to slide upwards along a guide slot, allowing the front and rear leg assemblies to fold together in coordination to achieve the first usage state. When the rear leg assembly rotates counterclockwise relative to the carrier body around pivot A1, the front leg assembly rotates counterclockwise relative to the carrier body via the joint assembly. The upper end of the rear leg assembly then causes the front leg assembly to slide downwards along a guide slot, allowing the front and rear leg assemblies to unfold in coordination to achieve the second usage state. This design employs a lighter structure, meeting usage requirements such as ease of carrying, easy unfolding, easy pushing, and easy storage.

Description

[Technical Field]

[0001] This application discloses information related to the field of child safety travel products, and in particular to child safety seats or strollers, scooters and other child vehicles. [Background Technology]

[0002] To facilitate travel with infants and toddlers using child safety seats (especially infant carriers), most child safety seats with this technology are assembled with other frames to form a stroller for use outside the car, allowing for pushing on the ground. When used inside the car, the seat is detached from the frame and installed on the car seat. Furthermore, these child safety seats or infant carriers require a special frame for use outside the car. This increases the number and weight of child-carrying vehicles, making them inconvenient for users to lift, and hindering quick switching between pushing and folding for storage.

[0003] In view of the above-mentioned technical problems, this invention is proposed. [Summary of the Invention]

[0004] The technical problem to be solved by the present invention is to provide a child vehicle that adopts a lighter structure and meets the usage requirements such as easy to carry, easy to unfold, easy to push and easy to store, without the need for an additional special frame.

[0005] To address the aforementioned technical problems, the present invention includes a child vehicle having a first and a second usable state that can be switched between each other, comprising:

[0006] The vehicle body 1 has a seat 11 and a backrest 12;

[0007] The joint assembly 2 is rotatably mounted on the carrier body 1, and the joint assembly 2 is provided with a guide slot 21;

[0008] The front foot assembly 3 has a front wheel 31 connected to its lower end. The front foot assembly 3 is slidably connected to the guide slot 21 and rotatably connected to the vehicle body 1 through the joint assembly 2. The upper end of the front foot assembly 3 passes through the guide slot 21.

[0009] The rear foot assembly 4 has a rear wheel 41 connected to its lower end. The upper part of the rear foot assembly 4 away from the rear wheel 41 is rotatably connected to the vehicle body 1 via a pivot A1. The upper end of the rear foot assembly 4 is pivotally connected to the upper end of the front foot assembly 3.

[0010] When the rear leg assembly 4 rotates clockwise relative to the vehicle body 1 around the pivot A1, the front leg assembly 3 rotates clockwise relative to the vehicle body 1 through the joint assembly 2, and the upper end of the rear leg assembly 4 is linked to cause the front leg assembly 3 to slide upward along the guide slot 21, so that the front leg assembly 3 and the rear leg assembly 4 work together to fold and close together to obtain the first use state.

[0011] When the rear leg assembly 4 rotates counterclockwise relative to the vehicle body 1 around the pivot A1, the front leg assembly 3 rotates counterclockwise relative to the vehicle body 1 through the joint assembly 2, and the upper end of the rear leg assembly 4 is linked to cause the front leg assembly 3 to slide downward along the guide slot 21, so that the front leg assembly 3 and the rear leg assembly 4 work together to unfold and obtain the second use state.

[0012] As described above, a child carrier is used in a first usage state for connection with a car seat or for connection with a separate base; the child carrier is used in a second usage state as an infant stroller.

[0013] The child vehicle described above also includes a usage state locking component 5, which is configured to lock the child vehicle in a first usage state and a second usage state.

[0014] As described above, in a child vehicle, the usage state locking component 5 is configured to automatically lock the front foot component 3 when the front foot component 3 rotates clockwise and abuts against the seat 11 in a preset position in the first usage state. At the same time, the rear foot component 4 is linked by the front foot component 3 and abuts against the seat 11. Furthermore, the usage state locking component 5 is configured to, after releasing the locking in the first usage state, drive the rear foot component 4 to rotate counterclockwise around the pivot A1 under its own gravity, while simultaneously driving the front foot component 3 to rotate counterclockwise relative to the vehicle body 1 through the joint component 2. The upper end of the rear foot component 4 is linked to the front foot component 3, causing the front foot component 3 to slide downward along the guide slot 21. The front foot component 3 and the rear foot component 4 are linked and unfolded in coordination. When the front foot component 3 slides downward along the guide slot 21 and unfolds to a preset position in the second usage state, the usage state locking component 5 automatically locks the front foot component 3.

[0015] As described above, in a child vehicle, the joint assembly 2 includes a joint block 20 rotatably connected to the seat portion 11 of the vehicle body 1. The guide slot 21 is provided on the joint block 20. The usage state locking assembly 5 is configured to lock the front foot assembly 3 in a first usage state and a second usage state. The usage state locking assembly 5 includes a state locking pin 51 elastically telescopically disposed on the vehicle body 1 and a state unlocking member 50 for driving the state locking pin 51 to extend or retract. The state locking pin 51 is eccentrically disposed relative to the pivot of the joint assembly 2. The front foot assembly 3 is provided with a first usage state locking hole 52 and a second usage state locking hole 53 spaced apart along its length direction.

[0016] As described above, in a child vehicle, the use state locking assembly 5 is configured to simultaneously lock the joint block 20 and the front foot assembly 3 in a first use state and a second use state. The use state locking assembly 5 further includes a first joint locking hole 54 and a second joint locking hole 55 disposed on the joint block 20, which can be aligned with the first use state locking hole 52 and the second use state locking hole 53 respectively in the first use state and the second use state.

[0017] As described above, in a child vehicle, the front foot assembly 3 includes a sliding section 32 for slidably engaging with a guide slot 21, a first use state locking hole 52 located on the sliding section 32 and near the end of the front wheel 31, and a second use state locking hole 53 located on the sliding section 32 and away from the end of the front wheel 31.

[0018] As described above, in a child vehicle, the front foot assembly 3 further includes a first limiting part 33 and a second limiting part 34 respectively disposed on both ends of the sliding section 32. When the front foot assembly 3 slides relative to the guide slot 21 such that the first limiting part 33 abuts against the edge of the opening of the guide slot 21, the state locking pin 51 aligns and elastically inserts into the first use state locking hole 52. When the front foot assembly 3 slides relative to the guide slot 21 such that the second limiting part 34 abuts against the edge of the opening of the guide slot 21, the state locking pin 51 aligns and elastically inserts into the second use state locking hole 53.

[0019] As described above, in a child vehicle, a flexible connector 7 is provided between the front foot assembly 3 and the rear foot assembly 4. The flexible connector 7 is stretched and tightened in the second use state to limit the distance between the front wheel 31 and the rear wheel 41.

[0020] As described above, a child vehicle is provided with a reinforcing crossbar 8 between the two front foot assemblies 3 and between the two rear foot assemblies 4. The reinforcing crossbar 8 or the bottom of the seat 11 is provided with a corresponding avoidance structure 81 for avoiding each other in the first use state so that the front wheel 31 and the rear wheel 41 are close to the two sides of the seat 11.

[0021] As described above, in a child vehicle, a backrest panel 120 is provided on the inner side of the backrest 12. A backrest adjustment mechanism 9 is provided between the backrest panel 120 and the backrest 12 for adjusting the highest and lowest angles between them. The backrest adjustment mechanism 9 is configured such that, in the first use state and when the child vehicle is connected to a car seat or a separate base, the backrest panel 120 rotates relative to the backrest 12 and locks at the highest angle to avoid impact during driving and to protect the infant's cervical spine. The backrest adjustment mechanism 9 is also configured such that, in the second use state, the backrest panel 120 can be switched between the highest and lowest angles.

[0022] As described above, in a child vehicle, the lower side of the backrest panel 120 is rotatably connected to the backrest 12. The backrest adjustment mechanism 9 includes a backrest adjustment slide rod 90, a push rod 93, a movable slide groove 91 on the backrest panel 120, and a fixed slide groove 92 on the backrest 12. The movable slide groove 91 and the fixed slide groove 92 are arranged crosswise, and the backrest adjustment slide rod 90 is slidably connected to both the movable slide groove 91 and the fixed slide groove 92. The backrest panel 120 is also provided with a drive slide groove 94. The push rod 93 is movably connected to the seat 11 along its axial direction, and the upper end of the push rod 93 is slidably connected to the drive slide groove 94. The lower end of the push rod 93 extends out of the bottom of the seat 11 in the second use state, and the lower end of the push rod 93 is pushed back into the bottom of the seat 11 by the upper surface of the car seat or independent base in the first use state.

[0023] As described above, in a child vehicle, the backrest adjustment mechanism 9 further includes a slide rod locking block 95 located on the backrest plate 120 and above the movable slide groove 91, which is used to lock the backrest adjustment slide rod 90 when the backrest plate 120 is in the highest angle. The backrest plate 120 is also provided with an adjustment release button 98 for releasing the slide rod locking block 95 in conjunction with the release action.

[0024] As described above, in a child vehicle, the backrest 120 is provided with a display window 96, and the backrest adjustment slide 90 is provided with a color-coded indicator block 97 for display and identification by the display window 96 when the backrest 120 is at its highest angle.

[0025] As described above, a child vehicle also includes a push handle assembly 100, which is rotatably connected to the vehicle body 1 via a push handle joint 200, which is configured to lock the push handle assembly 100 relative to the vehicle body 1 at multiple angles.

[0026] Compared with the prior art, the child vehicle of the present invention has the following advantages:

[0027] 1. The front leg assembly is connected by a joint assembly and a guide slot. While rotating, the front leg assembly slides relative to the joint assembly, which allows the front leg assembly and the rear leg assembly to quickly and efficiently fold to the first use state or unfold to the second use state. In the first use state, the front leg assembly, front wheel, rear leg assembly, and rear wheel are all in contact with the seat side. Since this folding and unfolding can be achieved without adding any additional linkages, the folding volume and overall weight are minimized.

[0028] 2. The child carrier of the present invention has a first use state and a second use state that can be switched between each other. When the user goes out by car, there is no need to equip a special stroller frame, which can effectively reduce the number and weight of children's equipment to be carried, and has the characteristics of convenient travel.

[0029] 3. Regardless of whether it is in the first or second usage state, locking and unlocking are performed using the state locking component, which has a one-click switching function to avoid cumbersome operation.

[0030] 4. In the second use state, the angle of the front foot assembly and the rear foot assembly is pulled by the flexible connector to make them have a stable gap and form a stable triangular unfolding structure; and by setting reinforcing crossbars between the two front foot assemblies and between the two rear foot assemblies, it is more stable and reliable in the second use state.

[0031] 5. The backrest adjustment mechanism allows the backrest to switch between the highest and lowest angle settings. When used in its initial state with an independent base or car seat, the backrest can only be used at the highest angle. This design effectively prevents neck injuries to infants and young children due to forgetting to adjust the backrest or impacts during vehicle operation, thus enhancing safety.

[0032] 6. In the second usage state, the backrest can be switched between the highest and lowest angle, increasing the personalized use of adjusting the backrest angle for a more comfortable riding experience. [Attached Image Description]

[0033] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0034] Figure 1 This is a side view of the invention in its second usage state;

[0035] Figure 2 This is one of the perspective views of the invention in its second usage state;

[0036] Figure 3 This is a second perspective view of the invention in its second usage state;

[0037] Figure 4 This is a side view of the invention in a semi-folded state;

[0038] Figure 5 This is a perspective view of the invention in a semi-folded state;

[0039] Figure 6 This is a side view of the invention in its first usage state;

[0040] Figure 7 This is one of the perspective views of the present invention in its first use state;

[0041] Figure 8 This is a second perspective view of the present invention in its first usage state;

[0042] Figure 9 This is one of the exploded views of the invention in its second usage state;

[0043] Figure 10 This is a second exploded view of the invention in its second usage state;

[0044] Figure 11 This is a cross-sectional view showing the front foot assembly being locked when the invention is in its second usage state.

[0045] Figure 12 This is a cross-sectional view of the front foot assembly being unlocked when the invention is in its second usage state.

[0046] Figure 13 This is a side view of the backrest adjustment mechanism with the top rod protruding from the bottom of the seat in the first use state of the present invention;

[0047] Figure 14 This is a three-dimensional structural diagram showing the disassembled backrest, top rod, and vehicle body in the first usage state of the present invention.

[0048] Figure 15 This is a cross-sectional view showing the connection between the push rod and the drive slide groove, and the backrest adjustment slide rod and the fixed slide groove when the backrest is adjusted to the lowest angle in this invention.

[0049] Figure 16 This is a cross-sectional view of the backrest adjustment slide rod connected to the fixed slide groove and the movable slide groove when the backrest panel is adjusted to the lowest angle in this invention.

[0050] Figure 17 This is a cross-sectional view showing the connection between the push rod and the drive slide groove, and the backrest adjustment slide rod and the fixed slide groove when the backrest is adjusted to the highest angle in this invention.

[0051] Figure 18 This is a cross-sectional view of the backrest adjustment slide rod connected to the fixed slide groove and the movable slide groove when the backrest panel is adjusted to the lowest angle in this invention.

[0052] Figure 19 This is a schematic diagram showing the lower end of the push rod abutting against the surface of the base during the first use of the present invention when it is connected to an independent base.

[0053] Figure 20 This is a schematic diagram showing the lower end of the push rod abutting against the surface of the car seat during the first use of the present invention in connection with the car seat.

Detailed Implementation Methods

[0054] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0055] like Figure 1-8 As shown, the present invention includes a child vehicle having a first and a second interchangeable use state, comprising: a vehicle body 1, joint components 2, a front leg component 3, and a rear leg component 4. The vehicle body 1 has a seat 11 and a backrest 12. The joint components 2 are rotatably disposed on both sides of the seat 11 of the vehicle body 1, and each joint component 2 is provided with a guide slot 21. The lower end of the front leg component 3 is connected to a front wheel 31, the front leg component 3 is slidably connected to the guide slot 21, and is rotatably connected to the vehicle body 1 via the joint components 2, with the upper end of the front leg component 3 passing through the guide slot 21. The lower end of the rear leg component 4 is connected to a rear wheel 41, and the upper part of the rear leg component 4 away from the rear wheel 41 is connected to the vehicle body. The main body 1 is rotatably connected via pivot A1, and the upper end of the rear leg assembly 4 is pivotally connected to the upper end of the front leg assembly 3. When the rear leg assembly 4 rotates clockwise relative to the main body 1 around pivot A1, the front leg assembly 3 rotates clockwise relative to the main body 1 via joint assembly 2, and the upper end of the rear leg assembly 4 is linked to cause the front leg assembly 3 to slide upward along the guide slot 21. This allows the front leg assembly 3 and the rear leg assembly 4 to fold together in coordination to achieve the first usage state. During this folding process, the front leg assembly is mainly connected via the joint assembly and guide slot. The front leg assembly slides relative to the joint assembly while rotating, thus allowing the front and rear leg assemblies to fold quickly and efficiently to the first usage state. And in the first usage state, as... Figure 6-8 As shown, the front foot assembly, front wheel, rear foot assembly, and rear wheel are all positioned against the side of the seat and are all higher than the bottom surface of the seat, thus not affecting connection with the car seat or independent base in the first use state. Since this folding and unfolding can be achieved without adding any additional linkages, the folded volume and overall weight are minimized.

[0056] like Figure 4-5As shown, when the rear leg assembly 4 rotates counterclockwise relative to the carrier body 1 around pivot A1, the front leg assembly 3 rotates counterclockwise relative to the carrier body 1 via joint assembly 2. Simultaneously, the upper end of the rear leg assembly 4 causes the front leg assembly 3 to slide downwards along the guide slot 21, allowing the front leg assembly 3 and rear leg assembly 4 to work together to unfold into the second usage state. During this process, the front leg assembly slides relative to the joint assembly while rotating, resulting in a fast and efficient unfolding mechanism.

[0057] like Figure 20 As shown, the child carrier is used in its first usage state for connection with a car seat, or as... Figure 19 As shown, the child carrier is designed for use with a separate base. Figure 1-3 As shown, the child carrier is used as an infant stroller in the second usage state. Therefore, users of the product of this invention can switch to this mode when driving out without the need for an additional dedicated stroller frame. This effectively reduces the number and weight of children's equipment to be carried, making it convenient for travel.

[0058] like Figure 9-12 As shown, in order to ensure stable and reliable use, the present invention provides a child vehicle, which further includes a use state locking component 5, the use state locking component 5 being configured to lock the child vehicle in a first use state and a second use state. Furthermore, the usage state locking component 5 is configured such that when the front foot component 3 rotates clockwise and abuts against the seat 11 at a preset position in the first usage state, the usage state locking component 5 automatically locks the front foot component 3, while the rear foot component 4 is coordinated with the front foot component 3 and abuts against the seat 11. The usage state locking component 5 is also configured such that after the first usage state is released, the front foot component 3, front wheel 31, rear foot component 4, and rear wheel 41 are subjected to their own gravity. Simultaneously, the rear foot component 4 rotates counterclockwise around pivot A1, while the front foot component 3 rotates counterclockwise relative to the vehicle body 1 via the joint component 2. The upper end of the rear foot component 4 is linked to the front foot component 3, causing the front foot component 3 to slide downwards along the guide slot 21. The front foot component 3 and the rear foot component 4 are coordinated and deployed. When the front foot component 3 slides downwards along the guide slot 21 to a preset position in the second usage state, the usage state locking component 5 automatically locks the front foot component 3. Because it utilizes its own gravity, it is labor-saving, fast, and efficient in switching to the second usage state.

[0059] like Figure 9 , 10As shown, the joint assembly 2 includes a joint block 20 rotatably connected to the seat 11 side. The guide slot 21 is provided on the joint block 20. The usage state locking assembly 5 is configured to lock the front foot assembly 3 in a first usage state and a second usage state. The usage state locking assembly 5 includes a state locking pin 51 elastically pressed by a locking spring 510 and disposed on the carrier body 1, and a state unlocking member 50 for driving the state locking pin 51 to extend and retract. The state locking pin 51 is eccentrically disposed relative to the pivot of the joint assembly 2. The state unlocking member 50 is engaged with the upper part of the backrest 12 by the state unlocking cover 501, and the state unlocking member 50 can move up and down relative to the backrest 12. Specifically, the state unlocking member 50 is connected to the state locking pin 51 by a steel cable, thereby controlling the elastic extension and retraction of the state locking pin 51.

[0060] like Figure 9 , 10 As shown, the front foot assembly 3 is provided with a first use state locking hole 52 and a second use state locking hole 53 spaced apart along its length. The use state locking assembly 5 is configured to lock the joint block 20 and the front foot assembly 3 simultaneously in the first use state and the second use state. The use state locking assembly 5 also includes a first joint locking hole 54 and a second joint locking hole 55 disposed on the joint block 20, which can be aligned with the first use state locking hole 52 and the second use state locking hole 53 respectively in the first use state and the second use state. The first joint locking hole 54 and the second joint locking hole 55 are eccentrically disposed on the joint block 20, and the central angle between the first joint locking hole 54 and the second joint locking hole 55 is equal to the angle of rotation of the front foot assembly when switching between the first use state and the second use state.

[0061] like Figure 9 As shown, the front foot assembly 3 includes a sliding section 32 for slidably engaging with the guide slot 21. The first usage state locking hole 52 is located on the sliding section 32 and near the end of the front wheel 31, while the second usage state locking hole 53 is located on the sliding section 32 and away from the end of the front wheel 31. To accurately lock the front foot assembly, the front foot assembly 3 also includes a first limiting part 33 and a second limiting part 34 correspondingly disposed on both ends of the sliding section 32. When the front foot assembly 3 slides relative to the guide slot 21 such that the first limiting part 33 abuts against the edge of the opening of the guide slot 21, the state locking pin 51 aligns and elastically inserts into the first usage state locking hole 52. When the front foot assembly 3 slides relative to the guide slot 21 such that the second limiting part 34 abuts against the edge of the opening of the guide slot 21, the state locking pin 51 aligns and elastically inserts into the second usage state locking hole 53.

[0062] like Figure 1-3The front foot assembly 3 and the rear foot assembly 4 are provided with a flexible connector 7, which can be made of steel cable, rope or similar material. When switching to the first use state, it does not affect the folding. In the second use state, the flexible connector 7 is straightened and tightened to limit the distance between the front wheel 31 and the rear wheel 41. The flexible connector pulls the front foot assembly and the rear foot assembly to open at a stable angle, forming a stable triangular structure, making it more stable and reliable in the second use state. Furthermore, a reinforcing crossbar 8 is provided between the two front foot assemblies 3 and between the two rear foot assemblies 4. The reinforcing crossbar 8 or the bottom of the seat 11 is provided with a clearance structure 81 for mutual avoidance in the first use state so that the front wheel 31 and the rear wheel 41 are close to the two sides of the seat 11. In this embodiment, the clearance structure 81 includes a receiving groove provided on the bottom of the seat 11 for accommodating the reinforcing crossbar 8. Furthermore, the reinforcing crossbar 8 provided between the two front foot assemblies 3 adopts a U-shaped structure, which is correspondingly matched with a receiving groove. The receiving groove does not need to be designed too deep to avoid affecting the structural strength or design of the vehicle body.

[0063] like Figure 13-16 As shown, a backrest panel 120 is provided on the inner side of the backrest 12. A backrest adjustment mechanism 9 is provided between the backrest panel 120 and the backrest 12 for adjusting the highest and lowest angles. In the first usage state, when the child carrier is connected to a car seat or a separate base, the backrest panel 120 rotates relative to the backrest 12 and locks at the highest angle. This design effectively avoids the problem of cervical spine injury to infants due to forgetting to adjust the backrest and impacts during vehicle movement, thus enhancing safety. The backrest adjustment mechanism 9 is also configured in the second usage state, allowing the backrest panel 120 to switch between the highest and lowest angles, increasing personalized adjustment for a comfortable riding experience.

[0064] Specifically, such as Figure 15-18As shown, the lower side of the backrest panel 120 is rotatably connected to the backrest back 12. The backrest adjustment mechanism 9 includes a backrest adjustment slide rod 90, a push rod 93, a movable slide groove 91 on the backrest panel 120, and a fixed slide groove 92 on the backrest back 12. The movable slide groove 91 and the fixed slide groove 92 are arranged crosswise, and the backrest adjustment slide rod 90 is slidably connected to both the movable slide groove 91 and the fixed slide groove 92. The backrest panel 120 is also provided with a drive slide groove 94. The push rod 93 is movably connected to the seat 11 along its axial direction, and the upper end of the push rod 93 is slidably connected to the drive slide groove 94. The lower end of the push rod 93 extends out of the bottom of the seat 11 in the second use state, and the lower end of the push rod 93 is pushed back into the bottom of the seat 11 by the upper surface of the car seat or independent base in the first use state. The backrest adjustment mechanism 9 also includes a slide rod locking block 95 disposed on the backrest plate 120 and located above the movable slide groove 91, for locking the backrest adjustment slide rod 90 when the backrest plate 120 is at its highest angle. The backrest plate 120 also has an adjustment release button 98 for releasing the slide rod locking block 95 in conjunction with the backrest plate 120. The backrest plate 120 has a display window 96, and the backrest adjustment slide rod 90 has a color-coded indicator block 97 for display and identification when the backrest plate 120 is at its highest angle. Figure 19 , 20 As shown, when the lower end of the push rod 93 abuts against the upper surface of the car seat or independent base, the entire push rod moves upward along its axis. The upper end of the push rod slides in the drive slide groove 94 and pushes the backrest plate to rotate around its pivot axis with the backrest. This causes the moving slide groove 91 to reduce the angle with the fixed slide groove 92, thus squeezing and pushing the backrest adjustment slide rod 90 upward until the lower end of the push rod is completely submerged in the bottom of the seat. Figure 17 As shown, at this time, the sliding rod locking block 95 locks the backrest adjustment sliding rod 90, and the color indicator block 97 extends out of the display window 96 to allow the user to confirm that the backrest panel 120 is at the highest angle. The warning function of the color indicator block 97 ensures safe use.

[0065] When the backrest panel 120 needs to be adjusted to the lowest angle, press the adjustment release button 98, and the slide lock block 95 will retract elastically. The backrest adjustment slide 90 will then disengage from the slide lock block 95 and slide down along the fixed slide groove 92, causing the angle between the moving slide groove and the fixed slide groove to gradually increase. The backrest panel 120 will gradually rotate around its connection end with the backrest until the backrest adjustment slide 90 slides to the bottom of the moving slide groove. At this time, the backrest panel reaches the lowest angle.

[0066] Furthermore, the present invention provides a child vehicle that also includes a push handle assembly 100, which is rotatably connected to the vehicle body 1 via a push handle joint 200. The push handle joint 200 is configured to lock the push handle assembly 100 relative to the vehicle body 1 at multiple angles. For a specific embodiment of the push handle joint 200, Chinese Patent ZL201680018456.8 discloses the corresponding structure, which will not be repeated here.

[0067] In summary, the present invention provides a child vehicle with a design scheme that makes the overall structure lighter and meets the usage requirements of easy carrying, easy unfolding, easy pushing, and easy storage.

Claims

1. A child vehicle, characterized in that... It has a first usage state and a second usage state that can be switched between each other, including: The vehicle body (1) has a seat (11) and a backrest (12). The joint assembly (2) is rotatably mounted on the vehicle body (1) and has a guide slot (21) on it. The front foot assembly (3) has a front wheel (31) connected to its lower end. The front foot assembly (3) is slidably connected to the guide slot (21) and rotatably connected to the vehicle body (1) via the joint assembly (2). The upper end of the front foot assembly (3) passes through the guide slot (21). The rear foot assembly (4) is connected to the rear wheel (41) at its lower end. The upper part of the rear foot assembly (4) away from the rear wheel (41) is rotatably connected to the vehicle body (1) via a pivot (A1). The upper end of the rear foot assembly (4) is pivotally connected to the upper end of the front foot assembly (3). The child vehicle also includes a usage state locking component (5), which is configured to lock the child vehicle in a first usage state and a second usage state. The child vehicle also includes a push handle assembly (100), which is rotatably connected to the vehicle body (1) via a push handle joint (200), which is configured to lock the push handle assembly (100) relative to the vehicle body (1) at multiple angles. When the rear leg assembly (4) rotates clockwise relative to the vehicle body (1) around the pivot (A1), the front leg assembly (3) rotates clockwise relative to the vehicle body (1) through the joint assembly (2), and the upper end of the rear leg assembly (4) is linked to cause the front leg assembly (3) to slide upward along the guide slot (21), so that the front leg assembly (3) and the rear leg assembly (4) work together to fold and close together to obtain the first use state; When the rear leg assembly (4) rotates counterclockwise relative to the vehicle body (1) around the pivot (A1), the front leg assembly (3) rotates counterclockwise relative to the vehicle body (1) through the joint assembly (2), and the upper end of the rear leg assembly (4) is linked to cause the front leg assembly (3) to slide downward along the guide slot (21), so that the front leg assembly (3) and the rear leg assembly (4) work together to unfold and obtain the second use state; The child carrier is used in a first usage state to connect with a car seat or to connect with a separate base; the child carrier is used as a stroller in a second usage state.

2. The child vehicle according to claim 1, characterized in that... The usage state locking component (5) is configured such that when the front foot component (3) rotates clockwise and rests against the seat (11) in a preset position in the first usage state, the usage state locking component (5) automatically locks the front foot component (3), and at the same time, the rear foot component (4) is coordinated with the front foot component (3) and rests against the seat (11); and the usage state locking component (5) is also configured such that after the locking of the first usage state is released, the front foot component (3), the front wheel (31), the rear foot component (4) and the rear wheel (41) are driven by their own gravity, driving the rear foot. While the component (4) rotates counterclockwise around the pivot (A1), it also drives the front foot component (3) to rotate counterclockwise relative to the vehicle body (1) through the joint component (2). The upper end of the rear foot component (4) is linked to the front foot component (3) and causes the front foot component (3) to slide down along the guide slot (21). The front foot component (3) and the rear foot component (4) are linked together and unfold in coordination. When the front foot component (3) slides down along the guide slot (21) to the preset position and is in the second use state, the use state locking component (5) automatically locks the front foot component (3).

3. A child vehicle according to claim 1, characterized in that... The joint assembly (2) includes a joint block (20) rotatably connected to the seat (11) side of the vehicle body (1). The guide slot (21) is provided on the joint block (20). The use state locking assembly (5) is configured to lock the front foot assembly (3) in a first use state and a second use state. The use state locking assembly (5) includes a state locking pin (51) elastically telescopically provided on the vehicle body (1) and a state unlocking member (50) for driving the state locking pin (51) to extend and retract. The state locking pin (51) is eccentrically provided relative to the pivot of the joint assembly (2). The front foot assembly (3) is provided with a first use state locking hole (52) and a second use state locking hole (53) spaced apart along its length direction.

4. A child vehicle according to claim 3, characterized in that... The usage state locking component (5) is configured to lock the joint block (20) and the front foot component (3) simultaneously in the first usage state and the second usage state. The usage state locking component (5) further includes a first joint locking hole (54) and a second joint locking hole (55) disposed on the joint block (20) that can be aligned with the first usage state locking hole (52) and the second usage state locking hole (53) respectively in the first usage state and the second usage state.

5. A child vehicle according to claim 3, characterized in that... The front foot assembly (3) includes a sliding section (32) for slidingly engaging with a guide slot (21), a first use state locking hole (52) located on the sliding section (32) and close to the end of the front wheel (31), and a second use state locking hole (53) located on the sliding section (32) and away from the end of the front wheel (31).

6. A child vehicle according to claim 5, characterized in that... The front foot assembly (3) also includes a first limiting part (33) and a second limiting part (34) respectively disposed on both ends of the sliding section (32). When the front foot assembly (3) slides relative to the guide slot (21) such that the first limiting part (33) abuts against the edge of the opening of the guide slot (21), the state locking pin (51) is aligned and elastically inserted into the first use state locking hole (52). When the front foot assembly (3) slides relative to the guide slot (21) such that the second limiting part (34) abuts against the edge of the opening of the guide slot (21), the state locking pin (51) is aligned and elastically inserted into the second use state locking hole (53).

7. A child vehicle according to claim 1, characterized in that... A flexible connector (7) is provided between the front foot assembly (3) and the rear foot assembly (4). The flexible connector (7) is stretched and tightened in the second use state to limit the distance between the front wheel (31) and the rear wheel (41).

8. A child vehicle according to claim 1, characterized in that... A reinforcing crossbar (8) is provided between the two front foot assemblies (3) and between the two rear foot assemblies (4). A clearance structure (81) is provided on the reinforcing crossbar (8) or on the bottom of the seat (11) for mutual clearance during the first use state so that the front wheel (31) and the rear wheel (41) are close to the two sides of the seat (11).

9. A child vehicle according to claim 1, characterized in that... The backrest (12) is provided with a backrest panel (120) on the inner side. A backrest adjustment mechanism (9) is provided between the backrest panel (120) and the backrest (12) for adjusting the highest and lowest angles between them. The backrest adjustment mechanism (9) is configured such that when the child carrier is connected to a car seat or an independent base in the first use state, the backrest panel (120) rotates relative to the backrest (12) and locks itself at the highest angle. The backrest adjustment mechanism (9) is also configured such that in the second use state, the backrest panel (120) can be switched between the highest and lowest angles.

10. A child vehicle according to claim 9, characterized in that... The backrest panel (120) is rotatably connected to the backrest (12) on its lower side. The backrest adjustment mechanism (9) includes a backrest adjustment slide rod (90), a top rod (93), a movable slide groove (91) on the backrest panel (120), and a fixed slide groove (92) on the backrest (12). The movable slide groove (91) and the fixed slide groove (92) are arranged crosswise, and the backrest adjustment slide rod (90) is slidably connected to both the movable slide groove (91) and the fixed slide groove (92). 92), the backrest (120) is also provided with a drive groove (94), the push rod (93) is movably connected to the seat (11) along its axial direction, and the upper end of the push rod (93) is slidably connected to the drive groove (94). The lower end of the push rod (93) extends out of the bottom of the seat (11) in the second use state, and the lower end of the push rod (93) is pushed back into the bottom of the seat (11) by the upper surface of the car seat or independent base in the first use state.

11. A child vehicle according to claim 10, characterized in that... The backrest adjustment mechanism (9) also includes a slide rod locking block (95) located on the backrest plate (120) and above the movable slide groove (91) for locking the backrest adjustment slide rod (90) when the backrest plate (120) is in the highest angle. The backrest plate (120) is also provided with an adjustment release button (98) for releasing the slide rod locking block (95) in conjunction with the release action.

12. A child vehicle according to claim 10 or 11, characterized in that... The backrest panel (120) is provided with a display window (96), and the backrest adjustment slide (90) is provided with a color display mark (97) for the display window (96) to display and identify when the backrest panel (120) is at the highest angle.

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