A child trailer with a backrest unilaterally split quick plug type adjusting seat

Abstract

The utility model relates to children's vehicle technical field especially, more particularly to a kind of children trailer with back single-sided split fast insertion type adjusting seat, including metal frame, base, split type connecting rod, buffer spring, front wheel, first adjusting gear and second adjusting gear, the metal frame is fixedly connected by bolt with base, base is tray-like structure, its side and split type connecting rod are connected, connecting rod front end is provided with front wheel and is built-in buffer spring, for relieving the impact when acceleration and deceleration, two groups of adjusting gears of interval arrangement are set on the metal frame top, different angle is realized by the quick adjustment of plug-in back, respectively corresponding about 75 ° and 60 ° backrest inclination, this structure has fast insertion positioning, double-gear adjustment and buffering shock-absorbing function, it is convenient to operate, ride comfortably, high safety, applicable to the children riding demand under different use scenarios.

Description

Technical Field

[0001] This utility model relates to the field of children's transportation technology, and in particular to a children's trailer with a single-sided split quick-release adjustable seat with a backrest. Background Technology

[0002] With the fast pace of urban life and the diversification of family childcare methods, child trailers are becoming increasingly popular among families as a convenient tool for parent-child travel. Currently available child trailers typically include a seat, frame, wheels, and connecting parts, enabling them to be pushed, pulled, and easily folded to meet the needs of daily short trips.

[0003] However, in actual use, existing child trailers still have the following shortcomings: some trailers have a fixed backrest structure, which cannot meet the comfort needs of children in different states (such as awake / resting); while trailers with backrest adjustment function mostly rely on slide rails, levers or multi-joint connectors, which are complex in structure, expensive, and have the risk of jamming or misoperation during the adjustment process. Summary of the Invention

[0004] The purpose of this invention is to provide a child trailer with a single-sided split quick-release adjustable seat with a backrest, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a child trailer with a single-sided split quick-release adjustable seat with a backrest, including a metal frame, a base, a split connecting rod, a buffer spring, a front wheel, a first adjustment position, and a second adjustment position.

[0006] According to the above technical solution, the metal frame is formed by bending a high-strength steel pipe as a whole, and then fixedly connected to the base by bolts. The bolts pass through the reserved through holes in the base and cooperate with the threaded holes at the lower end of the metal frame to ensure the stability and connection strength of the overall structure.

[0007] According to the above technical solution, the base is a rectangular tray-shaped structure with reinforcing ribs arranged along its long side to enhance the rigidity of the base and support the upper backrest and seat cushion.

[0008] According to the above technical solution, a fixing hole is provided on one side of the base for installation with a split connecting rod. The split connecting rod is a C-shaped clamp structure, which facilitates wrapping connection and improves stress stability.

[0009] According to the above technical solution, the front end of the split connecting rod is provided with a front wheel, and a helical compression spring is provided inside as a buffer spring. One end of the buffer spring is fixed to the connecting piece, and the other end is pressed against the inner wall of the connecting rod, which is used to alleviate inertial impact during acceleration or deceleration and improve riding comfort and safety.

[0010] According to the above technical solution, a front wheel locking device is provided above the front wheel to lock the trailer when it is stationary on an inclined road surface such as a slope, so as to prevent the vehicle body from sliding.

[0011] According to the above technical solution, when the user needs to adjust the backrest to the high position, the backrest tube is inserted behind the second adjustment position, and the backrest forms an angle of about 75° with the horizontal plane; when the user needs to adjust to the low position, the backrest tube is inserted into the first adjustment position, and the backrest forms an angle of about 60° with the horizontal plane.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0013] 1. By setting a first adjustment level and a second adjustment level, and adopting a quick-connect positioning structure, the backrest angle can be quickly adjusted in two levels, avoiding the problems of cumbersome and easily worn traditional slide rail adjustment structures, thus improving the ease of operation and structural reliability.

[0014] 2. The adjustment mechanism is fixed to the metal frame by ring welding, which has high connection strength and stability. Together with the backrest insert tube, it forms a covering and positioning structure, which can effectively prevent the backrest from shaking or falling off, thus improving the safety of riding.

[0015] 3. The split connecting rod has a built-in buffer spring, which can provide effective inertial buffering when the trailer accelerates or decelerates, improving riding comfort and is especially suitable for safety protection of children during riding.

[0016] 4. The overall structure does not require complex slide rails or locking mechanisms, enabling low-cost and high-reliability production, making it suitable for large-scale manufacturing and market promotion. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a child trailer with a single-sided split quick-release adjustable seat with a backrest, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of a child trailer with a single-sided split quick-release adjustable seat with a backrest, as proposed in this utility model, from another angle.

[0020] Figure 3 This is a front view of a child trailer with a single-sided split quick-release adjustable seat with a backrest, as proposed in this utility model.

[0021] Figure 4 This is a side view of a child trailer with a single-sided split quick-release adjustable seat with a backrest, as proposed in this utility model.

[0022] In the diagram: 1 Metal frame, 2 Base, 3 Split connecting rod, 31 Fixing hole, 4 Buffer spring, 41 Connector, 5 Front wheel, 51 Front wheel locking piece, 6 First adjustment position, 7 Second adjustment position. 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. Example

[0024] Reference Figures 1-4 A child stroller with a single-sided split quick-release adjustable seat includes a metal frame 1, a base 2, a split connecting rod 3, a buffer spring 4, a front wheel 5, a first adjustment position 6, and a second adjustment position 7. The metal frame 1 is made of high-strength steel pipe, bent into shape, and then fixed to the base 2 by bolts. The bolts pass through pre-drilled holes in the base 2 and engage with threaded holes at the lower end of the frame 1. The base 2 has a rectangular tray-like structure with several horizontally arranged reinforcing ribs along its long side to support the backrest and seat cushion and enhance its strength. The rigidity is achieved by connecting the split connecting rod 3 to the side via a fixing hole 31. The front end of the split connecting rod 3 is hollow, used to house a buffer spring 4. The buffer spring 4 is a helical compression spring, with one end fixed to the connecting piece 41 and the other end pressing against the inner wall of the split connecting rod 3 to control the inertia of the trailer during rapid acceleration or deceleration. The split connecting rod 3 has a C-shaped clamp structure, and a front wheel 5 is also provided at its front end. A front wheel locking piece 51 is provided above the front wheel 5 to prevent the trailer from slipping when stationary on an inclined road surface.

[0025] The metal frame 1 extends upwards along both sides of the base 2, and a first adjustment stop 6 and a second adjustment stop 7 are fixed above the rear end of the base 2, respectively. Both are rigidly fixed to the metal frame 1 using a circumferential welding process. The first adjustment stop 6 and the second adjustment stop 7 are 20cm apart, that is, the vertical distance between them is 20cm, and their positions are fixed. When a "high position" is required, the backrest passes through the back of the second adjustment stop 7, forming an outer covering with the entire device, with the backrest at an angle of 75° to the horizontal plane. When a "low position" is required, the backrest tube passes through the first adjustment stop 6, covering the connecting rod 3, with the backrest at an angle of 60° to the horizontal plane. This achieves two-position quick-connect positioning adjustment of the backrest. No sliding rail is required; dual-position quick positioning can be achieved simply by inserting different quick-connect adjustment stops.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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 process, method, article, or apparatus.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A child trailer with a single-sided split quick-release adjustable seat with a backrest, characterized in that, It includes a metal frame (1), a base (2), a split connecting rod (3), a buffer spring (4), a front wheel (5), a first adjustment gear (6), and a second adjustment gear (7). The metal frame (1) is fixedly connected to the base (2) by bolts. The base (2) is a rectangular tray-shaped structure, and its two sides are connected to the split connecting rod (3) through fixing holes (31). The split connecting rod (3) has a front wheel (5) at its front end, and the buffer spring (4) is installed inside it. The metal frame (1) extends upward along both sides of the base (2), and a first adjustment stop (6) and a second adjustment stop (7) are fixedly installed above the rear end of the base (2); The first adjustment position (6) and the second adjustment position (7) are used to insert the backrest tube to realize two-position quick-connect positioning adjustment of the backrest, wherein: When the backrest tube is inserted into the first adjustment position (6), the angle between the backrest and the horizontal plane is 60°. When the backrest tube is inserted into the second adjustment position (7), the angle between the backrest and the horizontal plane is 75°.

2. A child trailer with a single-sided split quick-release adjustable seat with a backrest as described in claim 1, characterized in that: The vertical distance between the first adjustment gear (6) and the second adjustment gear (7) is 20cm.

3. A child trailer with a single-sided split quick-release adjustable seat with a backrest as described in claim 1, characterized in that: The first adjustment gear (6) and the second adjustment gear (7) are fixedly connected to the metal frame (1) by a ring welding process.

4. A child trailer with a single-sided split quick-release adjustable seat with a backrest as described in claim 1, characterized in that: The split connecting rod (3) is a C-shaped clamp structure.

5. A child trailer with a single-sided split quick-release adjustable seat with a backrest as described in claim 4, characterized in that: The front end of the split connecting rod (3) is hollow, and the buffer spring (4) is installed inside it.

6. A child trailer with a single-sided split quick-release adjustable seat with a backrest as described in claim 5, characterized in that: The buffer spring (4) is a helical compression spring, with one end fixed to the connector (41) and the other end pressing against the inner wall of the split connecting rod (3).

7. A child trailer with a single-sided split quick-release adjustable seat with a backrest as described in claim 1, characterized in that: A front wheel locking element (51) is provided above the front wheel (5) to prevent the trailer from slipping when it is stationary.

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