Folding structure of three-wheel baby carriage
By adopting a clutch-type folding structure on the tricycle, and utilizing the engagement and disengagement design of the spline teeth and the fixed seat, the problem of existing tricycles being unable to fold or having complicated folding methods has been solved, achieving the effect of easy folding and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-20
AI Technical Summary
Most existing children's tricycles are either not foldable or have complex folding structures, making them inconvenient to carry and taking up a lot of space. Existing foldable tricycles are not very effective.
It adopts a clutch-type folding structure. By setting fixed seats, folding arms, spline teeth and snaps at the handlebars and rear wheels of the tricycle, folding is achieved by the engagement and disengagement of the spline teeth with the fixed seats. Combined with the design of springs and snaps, it achieves simple folding operation.
It achieves easy folding of the tricycle, reduces space occupation, is easy to carry, and has a simple structure, is easy to use, and is easy to manufacture and maintain.
Smart Images
Figure CN224013788U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a folding structure of a three-wheeled baby carriage. BACKGROUND
[0002] Most of the existing children's three-wheeled carriages cannot be folded, which is inconvenient to carry and occupies a large space when traveling (such as occupying a large space when carrying in the trunk). Some foldable three-wheeled carriages have complex folding structures and fewer foldable parts, which have poor use effect. Therefore, it is necessary to improve the prior art to solve the problems of the prior art. SUMMARY
[0003] The utility model discloses a folding structure of a three-wheeled baby carriage to solve the problems of the prior art.
[0004] The utility model discloses the technical scheme that adopts has:
[0005] A folding structure of a three-wheeled baby carriage, the folding point of the folding structure is the folding of the handlebar in the three-wheeled baby carriage and the folding of the two rear wheels in opposite directions, the folding structure adopts a clutch type folding mode to fold, and the structure comprises a fixed seat, a folding arm, a spline tooth and a buckle, the fixed seat is connected with the frame of the three-wheeled baby carriage, the folding arm is connected with the handlebar and the rear wheels respectively, the folding arm is rotatably connected to the fixed seat, the fixed seat and the folding arm are provided with spline holes in the direction of the rotation axis, the two ends of the spline tooth are engaged with the spline holes of the fixed seat and the folding arm, the buckle is elastically supported on the fixed seat, and the spline tooth is axially displaced and separated from the spline hole of the fixed seat by axially pressing the buckle, and the folding arm is bent by rotating the folding arm.
[0006] Further, a first pin shaft is fixed on the fixed seat, a first spring is sleeved on the first pin shaft, and the first spring abuts the spline tooth in the spline hole of the fixed seat.
[0007] Further, an installation seat is fixed on the fixed seat, the installation seat is coaxially arranged with the spline hole of the fixed seat, the first pin shaft is arranged through the installation seat and fixed with the installation seat, and the buckle is inserted into the installation seat and abuts the spline tooth on the inner side.
[0008] The utility model has the advantages of:
[0009] The overall folding and dismounting occupy a small space and are convenient to carry, the folding structure is simple, convenient to use, convenient to manufacture and maintain, and has good use effect. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 The utility model is a structural drawing.
[0011] Figure 2 The utility model is a structural drawing after folding.
[0012] Figure 3 is a folding structure diagram between the frame and the handle.
[0013] Figure 4 and Figure 5 is Figure 3 an explosion diagram.
[0014] Figure 6 is a structure diagram of the buckle and the mounting seat. DETAILED DESCRIPTION
[0015] The utility model will be further described below in combination with the drawings.
[0016] As Figures 1 to 6 , the utility model discloses a folding structure of three -wheel baby carriage, and the folding point of folding structure is the folding of handle 2 in three -wheel baby carriage and the opposite folding of two rear wheels 4, and the folding principle between handle 2 and frame 1 and between rear wheel 4 and frame 1 is same, all adopt the clutch type folding mode, and different due to the different installation position leads to the outline structure of partial structure not same, now with the specific folding structure between handle 2 and frame 1 to the clutch type folding mode of the utility model further described.
[0017] The structure of realizing clutch type folding mode includes fixed seat 81, folding arm 82, spline tooth 83 and buckle 84, fixed seat 81 is connected with the frame 1 of three -wheel baby carriage, handle 2 connects folding arm 82, two connecting ears are equipped on fixed seat 81, rotating column is equipped on folding arm 82, and rotating column is placed between two connecting ears, spline hole 80 is equipped in the direction of rotating shaft of left connecting ear and rotating column, spline tooth 83 is placed in rotating column, and both ends are engaged with spline hole 80 of fixed seat 81 and folding arm 82, and buckle 84 is elastically connected on one connecting ear, and axial pressing buckle 84 makes spline tooth 83 axial displacement and disengages spline hole 80 of fixed seat 81, then rotating folding arm 82 realizes the bending of folding arm 82. After bending to the angle required, buckle 84 is loosened, and spline tooth 83 resets and reengages with spline hole 80 of fixed seat 81.
[0018] To realize the elastic reset of spline tooth 83 and buckle 84, first pin shaft 85 is fixed on fixed seat 81, first spring 86 is sleeved on first pin shaft 85, right end of first spring 86 is abutted on the connecting ear on right side, left side is abutted on spline tooth 83, and spline tooth 83 is abutted in spline hole 80 of fixed seat 81.
[0019] The mounting seat 87 is fixed in the left connecting lug, the first pin shaft 85 is arranged in the mounting seat 87 and fixed with the mounting seat 87, the snap buckle 84 is provided with a cylindrical pin and a limiting buckle, the snap buckle 84 is inserted in the mounting seat 87 and axially limited by the limiting buckle, and the cylindrical pin on the snap buckle 84 abuts against the spline tooth 83.
[0020] When the folding arm 82 needs to be folded, the snap buckle 84 is pressed inward, the snap buckle 84 abuts against the spline tooth 83 and axially moves against the spring force of the first spring 86, and after the spline tooth 83 is separated from the spline hole 80 of the fixed seat 81, the folding arm 82 is folded.
[0021] The folding principle between the rear wheel 4 and the frame 1 is the same as the folding principle between the handlebar 2 and the frame 1, except that the outer contour structure of the fixed seat 81 and the folding arm 82, so the folding structure between the rear wheel 4 and the frame 1 is not described again. When the rear wheel 4 is folded, the two rear wheels 4 are folded towards each other by 180°.
[0022] The rear wheel frame 7 is folded towards the front wheel 3, so that the front wheel 3 is arranged between the two rear wheels 4.
[0023] The above only is the preferred embodiment of the present application, it should be pointed out, for the ordinary skilled in the art, without departing from the principles of the present application under the premise that still can make a number of improvements, these improvements also should be considered as the protection scope of the present application.
Claims
1. A folding structure for a three-wheeled children's vehicle, wherein the folding points of the folding structure are the folding of the handlebars (2) and the folding of the two rear wheels (4) in opposite directions, characterized in that: The folding structure adopts a clutch-type folding method for folding. The structure includes: a fixed seat (81), a folding arm (82), a spline tooth (83), and a snap button (84). The fixed seat (81) is connected to the frame (1) of the tricycle. The rear wheel (4) and the handlebar (2) are connected to the folding arm (82) respectively. The folding arm (82) is rotatably connected to the fixed seat (81). Both the fixed seat (81) and the folding arm (82) are provided with spline holes (80) in the direction of the rotation axis. The two ends of the spline tooth (83) are engaged with the spline holes (80) of the fixed seat (81) and the folding arm (82). The snap button (84) is elastically supported on the fixed seat (81). Axially pressing the snap button (84) causes the spline tooth (83) to be axially displaced and disengaged from the spline hole (80) of the fixed seat (81). Rotating the folding arm (82) realizes the bending of the folding arm (82).
2. The folding structure of the tricycle as described in claim 1, characterized in that: A first pin (85) is fixed on the fixed seat (81), and a first spring (86) is sleeved on the first pin (85). The first spring (86) abuts the spline teeth (83) against the spline hole (80) of the fixed seat (81).
3. The folding structure of the tricycle as described in claim 2, characterized in that: The mounting base (87) is fixed on the fixed base (81). The mounting base (87) and the spline hole (80) on the fixed base (81) are arranged coaxially. The first pin (85) passes through the mounting base (87) and is fixed to the mounting base. The snap fastener (84) is inserted into the mounting base (87) and its inner side abuts against the spline tooth (83).