Lightweight stroller

Abstract

The utility model discloses a kind of lightweight baby car, it is related to baby car technical field, the lightweight baby car, including car body, further include: rear wheel assembly, it is detachably installed in the lower end surface rear side of the car body;Standby wheel assembly, it is detachably installed in the lower end surface of the car body, including single-wheel support, the upper side of the single-wheel support is fixed with the double-end connector two with through hole in middle part, lower side rotatably installed with standby idler wheel;Clamping assembly, it is fixedly installed in the lower end surface of car body, including U-shaped clamping seat, the inner side of the U-shaped clamping seat is fixed with arc-shaped fender, the fender and the tire and hub recess of standby idler wheel are interlocked;The lower end surface of the car body is close to the cavity being set in front wheel, one side of the cavity is fixed with hanging rod.The utility model is provided with single-wheel standby wheel assembly, solve the problem that current baby car riding mode is fixed, general installation is convenient to switch, stable storage and disassembly are convenient, and it is strong in functionality and interesting.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, specifically a lightweight children's vehicle. Background Technology

[0002] Strollers are transportation tools specifically designed for children, combining safety, entertainment, and educational functions, suitable for different developmental stages from infancy to school age. Their core design philosophy is to provide children with a safe and reliable mobility experience through scientific structure and material selection, based on their height, weight, and age characteristics.

[0003] However, current children's bicycles generally suffer from fixed riding modes: most products use a fixed dual rear wheel or single rear wheel structure. Younger children need dual rear wheels for stability, while older children prefer the agile handling of a single rear wheel. Existing children's bicycles struggle to meet both needs, limiting functionality and enjoyment. Furthermore, some children's bicycles with switchable modes are structurally complex (requiring replacement of the entire wheel set and the use of multiple tools), increasing overall weight and violating lightweight design principles. They also present problems such as cumbersome operation and inconvenient storage, failing to meet parents' demands for convenience. Therefore, this utility model provides a lightweight children's bicycle. Utility Model Content

[0004] This utility model provides a lightweight children's vehicle. It is equipped with a single-wheel spare wheel assembly, which solves the problem of fixed riding modes in current children's vehicles. It is universally installed for easy switching, stably stored and conveniently disassembled, and has strong functionality and fun.

[0005] This utility model provides the following technical solution: a lightweight children's stroller, including a frame, a rotating rod rotatably connected to the front end of the frame, a handle fixedly connected to the upper end of the rotating rod, and a front wheel bracket fixedly installed at the lower end of the rotating rod, with a front wheel rotatably installed on the inner side of the front wheel bracket, and further including:

[0006] Rear wheel assembly, which is detachably mounted on the rear side of the lower end face of the vehicle body;

[0007] A spare wheel assembly, which is detachably installed on the lower end face of the vehicle body, includes a single wheel bracket, a double-ended connector with a through hole in the middle fixed on the upper side of the single wheel bracket, and a spare roller rotatably installed on the lower side;

[0008] The clamping assembly is fixedly installed on the lower end face of the vehicle body, including a U-shaped clamping seat. An arc-shaped stop bar is fixed on the inner side of the U-shaped clamping seat. The stop bar engages with the groove between the tire and the hub of the spare roller.

[0009] A cavity is provided on the lower end face of the vehicle body near the front wheel. A hanging rod is fixed on one side of the cavity, and the hanging rod passes through the through hole of the double-ended connector.

[0010] In a preferred embodiment of this utility model, the rear wheel assembly includes a double-wheel bracket. A first double-ended connector with a through hole in the center is fixed to the upper side of the double-wheel bracket, and rear rollers are rotatably connected to both sides of the lower end. The first and second double-ended connectors are of the same specifications.

[0011] As a preferred embodiment of this utility model, two double-ended connectors are provided on the rear side of the lower end face of the vehicle body. The double-ended connectors are inserted into the two mounting slots. A shaft is provided at the rear end of the vehicle body, penetrating the two mounting slots and the through hole of the double-ended connectors. The other end of the shaft extends out of the vehicle body and is threaded with a sleeve.

[0012] As a preferred embodiment of this utility model, the shaft and the threaded sleeve are both embedded in the inner side of the vehicle body, and the outer ends of the shaft and the threaded sleeve are provided with hexagonal grooves, which are suitable for tightening with a hexagonal wrench.

[0013] As a preferred technical solution of this utility model, a seat is provided on the upper surface of the vehicle body. The seat includes a rigid base, and the upper surface of the rigid base is covered with a soft pad. A plurality of protruding strips are fixedly provided at intervals on the upper surface of the soft pad.

[0014] As a preferred technical solution of this utility model, a storage cavity is provided on the upper end surface of the vehicle body below the seat, and a stepped groove is provided on the upper edge of the storage cavity, and the rigid base is snapped into the inner side of the stepped groove.

[0015] As a preferred technical solution of this utility model, the curvature of the stop bar matches the curvature of the spare roller, and both the U-shaped clamp and the stop bar are made of elastic plastic.

[0016] Compared with the prior art, this utility model provides a lightweight stroller with the following advantages:

[0017] This invention utilizes a spare wheel assembly for a single wheel, along with a clamping component and a cavity, to achieve dual storage and fixation of the spare wheel. While ensuring the lightweight design of the children's vehicle, it solves the problem of existing children's vehicle models having fixed riding modes, making it inconvenient to switch between single and dual rear wheel modes. The spare wheel assembly uses a double-ended connector of the same specifications as the rear wheel assembly, allowing for a universal installation structure and easy switching between riding modes. The clamping component engages with the spare wheel groove via an elastic retaining strip, combined with a hanging rod within the cavity, achieving stable storage and easy disassembly of the spare wheel. The overall structural design balances portability and practicality, significantly enhancing the functionality and fun of the children's vehicle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembly structure of the vehicle seat in this utility model;

[0020] Figure 3 This is a bottom view of the present invention;

[0021] Figure 4 This is a schematic diagram of the disassembly structure of the rear wheel assembly and the spare wheel assembly in this utility model.

[0022] In the diagram: 1. Vehicle body; 2. Rotary rod; 3. Handlebar; 4. Front wheel bracket; 5. Front wheel; 6. Seat; 601. Hard base; 602. Soft padding; 603. Raised strip; 7. Rear wheel assembly; 701. Double wheel bracket; 702. Double-end connector one; 703. Rear roller; 8. Spare wheel assembly; 801. Single wheel bracket; 802. Double-end connector two; 803. Spare roller; 9. Storage cavity; 10. Stepped groove; 11. Clamping assembly; 1101. U-shaped clamping seat; 1102. Stop bar; 12. Mounting groove; 13. Shaft; 14. Screw sleeve; 15. Cavity; 16. Hanging rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model discloses a lightweight children's stroller, including a body 1. The body 1 has a streamlined structure to reduce weight. A rotating rod 2 is rotatably connected to the front end of the body 1 via a bearing. A handle 3 is welded and fixed to the upper end of the rotating rod 2, and the outer surface of the handle 3 is covered with an anti-slip rubber sleeve. A front wheel bracket 4 is installed through the lower end of the rotating rod 2 through the body 1 and fixed with bolts. A front wheel 5 is rotatably installed on the inner side of the front wheel bracket 4 via an axle. The front wheel 5 facilitates steering.

[0025] A rear wheel assembly 7 is detachably installed on the rear side of the lower end face of the vehicle body 1. The rear wheel assembly 7 includes a double wheel bracket 701, which is made of stamped steel plate. A double-end connector 702 is integrally formed on the upper side, and a through hole is opened in the middle of the double-end connector 702. The lower ends of the double wheel bracket 701 are rotatably connected to the rear rollers 703 through wheel axles. The diameter of the rear rollers 703 is larger than that of the front wheels 5, which improves driving stability.

[0026] Two mounting slots 12 are provided on the rear side of the lower end face of the vehicle body 1. A double-ended connector 702 is inserted into the two mounting slots 12. An axle 13 is provided at the rear end of the vehicle body 1. The axle 13 passes through the side wall of the two mounting slots 12 and the through hole on the double-ended connector 702. The other end of the axle 13 extends out of the vehicle body 1 and is threaded with a threaded sleeve 14. The rear wheel assembly 7 is fixed by tightening the threaded sleeve 14. Both the axle 13 and the threaded sleeve 14 are embedded inside the vehicle body 1 to avoid protrusion and scratches; and both have hexagonal grooves on their outer ends, which can be quickly tightened with a hex wrench, facilitating the disassembly and replacement of the rear wheel assembly 7.

[0027] A spare wheel assembly 8 can also be detachably installed on the lower end face of the vehicle body 1. The spare wheel assembly 8 includes a single wheel bracket 801. A double-ended connector 802 is integrally formed on the upper side of the single wheel bracket 801. The double-ended connector 802 has the same specifications as the double-ended connector 702, including the through hole diameter and thickness, to ensure that it can share the installation structure with the rear wheel assembly 7. A spare roller 803 is rotatably installed on the lower side of the single wheel bracket 801 through the wheel axle. The size of the spare roller 803 matches the rear roller 703 and can be used as a replacement part.

[0028] A clamping assembly 11 is fixed to the lower end face of the vehicle body 1. The clamping assembly 11 includes a U-shaped clamping seat 1101. An arc-shaped stop bar 1102 is glued and fixed to the inner side of the U-shaped clamping seat 1101. The arc of the stop bar 1102 matches the arc of the groove between the tire and the hub of the spare roller 803. Both the U-shaped clamping seat 1101 and the stop bar 1102 are made of elastic plastic (such as PE material). The elastic deformation is used to achieve a tight engagement between the stop bar 1102 and the groove of the spare roller 803, thereby achieving clamping and positioning behind the spare wheel assembly 8.

[0029] A cavity 15 is provided on the lower end face of the vehicle body 1 near the front wheel 5. A hanging rod 16 is welded and fixed to one side of the cavity 15. The diameter of the hanging rod 16 matches the diameter of the through hole on the double-ended connector 802. The spare wheel assembly 8 can be suspended and stored in the cavity 15 through the through hole. By setting the clamping assembly 11 and the hanging rod 16, the spare wheel assembly 8 can be suspended and stored under the vehicle body 1, avoiding the spare wheel assembly 8 from being exposed and occupying space.

[0030] The upper surface of the vehicle body 1 is provided with a seat 6, which includes a hard base 601. The hard base 601 is injection molded from ABS engineering plastic, and the upper surface is covered with a soft pad 602. The soft pad 602 is filled with memory foam to improve the comfort of the ride. Multiple raised strips 603 are bonded at intervals on the upper surface of the soft pad 602. The raised strips 603 are made of silicone material and serve as anti-slip and massage functions.

[0031] A storage cavity 9 is provided on the upper surface of the vehicle body 1 below the seat 6. The storage cavity 9 can be used to store children's products. A stepped groove 10 is provided on the upper edge of the storage cavity 9. A rigid base 601 is snapped into the inner side of the stepped groove 10 to realize the detachable installation of the seat 6 and facilitate the opening of the storage cavity 9.

[0032] The working principle and usage process of this utility model: During daily use, the spare wheel assembly 8 can be stored: it is temporarily fixed by the clamping strip 1102 of the clamping assembly 11 in the groove of the spare roller 803, and suspended on the hanging rod 16 of the cavity 15 by the clamping force of the elastic plastic. The storage is achieved by the through hole of the double-end connector 802 cooperating with the hanging rod 16, without affecting the normal driving of the stroller.

[0033] When you want to switch to single-wheel driving, or if the rear wheel assembly 7 is damaged, use a hex wrench to unscrew the nut 14 and the axle 13 to remove the rear wheel assembly 7; remove the spare wheel assembly 8 from the storage position, insert the double-ended connector 802 into the corresponding mounting slot 12, pass it through the axle 13 and tighten the nut 14 to complete the replacement of the spare wheel. The operation is convenient.

[0034] The seat 6 is secured to the stepped groove 10 via a rigid base 601. Lifting it upwards opens the storage cavity 9, making it easy to put in and take out items, thus combining practicality and portability.

[0035] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight children's stroller, comprising a frame (1), wherein a rotating rod (2) is rotatably sleeved at the front end of the frame (1), a handle (3) is fixedly sleeved at the upper end of the rotating rod (2), and a front wheel bracket (4) is fixedly installed at the lower end of the rotating rod (2) through the frame (1), wherein a front wheel (5) is rotatably installed on the inner side of the front wheel bracket (4), characterized in that, Also includes: The rear wheel assembly (7) is detachably mounted on the rear side of the lower end face of the vehicle body (1); The spare wheel assembly (8) is detachably installed on the lower end face of the vehicle body (1), including a single wheel bracket (801). The upper side of the single wheel bracket (801) is fixed with a double-ended connector (802) with a through hole in the middle, and the lower side is rotatably installed with a spare roller (803). The clamping assembly (11) is fixedly installed on the lower end face of the vehicle body (1), including a U-shaped clamping seat (1101), and an arc-shaped stop bar (1102) is fixed on the inner side of the U-shaped clamping seat (1101). The stop bar (1102) is engaged with the groove between the tire and the hub of the spare roller (803). A cavity (15) is provided on the lower end face of the vehicle body (1) near the front wheel (5). A hanging rod (16) is fixed on one side of the cavity (15). The hanging rod (16) passes through the through hole of the double-ended connector (802).

2. The lightweight stroller according to claim 1, characterized in that: The rear wheel assembly (7) includes a double wheel bracket (701). The upper side of the double wheel bracket (701) is fixed with a double-ended connector (702) with a through hole in the middle, and the lower two sides are rotatably connected with rear rollers (703). The double-ended connector (702) and the double-ended connector (802) have the same specifications.

3. A lightweight stroller according to claim 2, characterized in that: Two double-ended connectors (702) are provided on the rear side of the lower end face of the vehicle body (1). The double-ended connectors (702) are inserted into the two mounting slots (12). The rear end of the vehicle body (1) is provided with a shaft (13) that passes through the two mounting slots (12) and the through hole on the double-ended connectors (702). The other end of the shaft (13) extends out of the vehicle body (1) and is threaded with a threaded sleeve (14).

4. A lightweight stroller according to claim 3, characterized in that: The shaft (13) and the threaded sleeve (14) are both embedded in the inner side of the vehicle body (1), and the outer ends of the shaft (13) and the threaded sleeve (14) are provided with hexagonal grooves, which are suitable for tightening with a hexagonal wrench.

5. A lightweight stroller according to claim 1, characterized in that: The upper surface of the vehicle body (1) is provided with a seat (6), the seat (6) includes a hard base (601), the upper end of the hard base (601) is covered with a soft cover (602), and the upper surface of the soft cover (602) is provided with a plurality of protrusions (603) at intervals.

6. A lightweight stroller according to claim 5, characterized in that: The upper end face of the vehicle body (1) is provided with a storage cavity (9) located below the seat (6). The upper edge of the storage cavity (9) is provided with a stepped groove (10), and the rigid base (601) is snapped into the inner side of the stepped groove (10).

7. A lightweight stroller according to claim 1, characterized in that: The curvature of the stop bar (1102) matches the curvature of the spare roller (803), and both the U-shaped clamp (1101) and the stop bar (1102) are made of elastic plastic.

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