Three-wheel stroller for children

Abstract

The utility model relates to a child three-wheel stroller which comprises a frame, a front wheel assembly and a seat arranged at the upper end of the frame, and further comprises a rear wheel frame and spare wheels, rear fork shafts are installed on the two sides of the rear end of the frame respectively, a plunger is installed on the lower side of the free end of each rear fork shaft, elastic pieces for supporting the plungers are installed in the rear fork shafts, and the rear fork shafts are connected with the rear wheel frame through the spare wheels. An inserting column is arranged in the middle of the upper end of the rear wheel frame, a rear wheel is rotationally installed on each of the two sides of the rear wheel frame, a butt joint cylinder is rotationally connected to each of the two sides of a rotating shaft of the spare wheel, one butt joint cylinder on the spare wheel is selected to be connected to the inserting column in a sleeving mode, and two butt joint cylinders correspondingly inserted into the rear fork shafts one to one are arranged at the front end of the rear wheel frame; a through positioning hole is formed in the bottom of each butt joint cylinder, an ejector rod is slidably mounted in each positioning hole, and an unlocking button connected with the ejector rods is further mounted at the bottom of each butt joint cylinder. The multifunctional three-wheeled child cart can be used as a normal three-wheeled child cart, can be transformed into a two-wheeled balance cart according to requirements, and is multifunctional and complete in function.

Description

Technical Field

[0001] The utility model relates to the technical field of three-wheeled children's strollers, in particular to a three-wheeled children's stroller. Background Art

[0002] Children's three-wheeled stroller is a favorite toy for many children and is also a means of transportation for children. When children ride the stroller, they can exercise the strength of their knee joint muscles, improve their athletic ability, promote their physical development, and benefit their growth.

[0003] The existing three-wheeled stroller for children has a single function, which is to be a three-wheeled stroller and cannot be transformed into a two-wheeled balance car. Although some deformable three-wheeled strollers have appeared on the market, their structures are complex and the adjustment operation is troublesome. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a three-wheeled children's stroller, which can not only be used as a normal three-wheeled children's stroller, but also can be transformed into a two-wheeled balance car according to needs. The vehicle has multiple uses and is fully functional.

[0005] The utility model solves the technical problem adopted by the utility model as follows: a three-wheeled stroller for children is provided, comprising a frame, a front wheel assembly movably inserted at the front end of the frame, and a seat arranged at the upper end of the frame, and also comprising a rear wheel frame and a spare wheel, wherein a rear fork shaft is respectively installed on both sides of the rear end of the frame, a retractable plunger is installed on the lower side of the free end of each rear fork shaft, an elastic member supporting the plunger is installed inside the rear fork shaft, a plug post is provided at the middle part of the upper end of the rear wheel frame, a rear wheel is rotatably installed on each side of the rear wheel frame, a docking tube is rotatably connected to each side of the rotating shaft of the spare wheel, one of the docking tubes on the spare wheel is selected to be sleeved on the plug post, two docking tubes are provided at the front end of the rear wheel frame, and the bottom of the four docking tubes is respectively provided with a through positioning hole, a push rod is slidably installed in the positioning hole, and an unlocking button connected to the push rod is also installed at the bottom of the docking tube, the two rear fork shafts are respectively inserted into the corresponding docking tubes of the rear wheel frame, and the plungers on the rear fork shafts are buckled into the corresponding positioning holes.

[0006] As a supplement to the technical solution described in the present invention, the front wheel assembly includes a front fork, a front wheel and a handlebar. The front end of the frame is rotatably mounted with the front fork, the lower part of the front fork is mounted with the front wheel and a pedal for controlling the front wheel, and the front fork is mounted with a handlebar for controlling the steering of the front wheel.

[0007] As a supplement to the technical solution of the present invention, a guide groove is provided at the bottom of the inlet end of the docking sleeve, and the depth of the guide groove gradually decreases from the inlet end to the fixed end.

[0008] As a supplement to the technical solution described in the present invention, a spring sheet is provided on the side of the plug post, and a protrusion that cooperates with the positioning hole is installed on the outer side of the upper part of the spring sheet.

[0009] As a supplement to the technical solution described in the present invention, a detachable push rod assembly is installed at the rear end of the frame.

[0010] As a supplement to the technical solution described in the present invention, the unlocking button includes a boss and a button plate. The boss is fixed to the bottom of the docking tube by a fastener. A button plate is provided on one side of the middle of the boss. There is a pressing gap between the button plate and the bottom of the docking tube, and the push rod is arranged on the button plate.

[0011] Beneficial effect: The utility model relates to a three-wheeled stroller for children, which can not only be used as a normal three-wheeled stroller for children, but can also be transformed into a two-wheeled balance car according to needs. It has multiple uses, complete functions, easy operation, simple structure and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model after the rear wheel frame is removed;

[0014] Figure 3 It is a structural schematic diagram of the rear wheel frame of the utility model;

[0015] Figure 4 This is a schematic structural diagram of the spare wheel described in the utility model;

[0016] Figure 5 It is a structural diagram of the unlocking button described in the utility model;

[0017] Figure 6 It is a structural schematic diagram of the utility model transformed into a two-wheeled vehicle.

[0018] Illustration: 1. Frame, 2. Front fork, 3. Front wheel, 4. Foot pedal, 5. Handlebar, 6. Seat, 7. Rear fork shaft, 8. Push rod assembly, 9. Rear wheel frame, 10. Rear wheel, 11. Spare wheel, 12. Plunger, 13. Elastic member, 14. Docking tube, 15. Positioning hole, 16. Guide groove, 17. Unlock button, 18. Insert column, 19. Shrapnel, 20. Raised part, 21. Push rod, 22. Boss, 23. Button plate, 24. Mounting hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0020] The embodiment of the present utility model relates to a three-wheeled stroller for children, such as Figure 1-6 As shown, it includes a frame 1, a front wheel assembly movably inserted at the front end of the frame 1, and a seat 6 arranged at the upper end of the frame 1, and also includes a rear wheel frame 9 and a spare wheel 11. A rear fork shaft 7 is installed on both sides of the rear end of the frame 1, and a retractable plunger 12 is installed on the lower side of the free end of each rear fork shaft 7. An elastic member 13 supporting the plunger 12 is installed inside the rear fork shaft 7. The elastic member 13 can be a spring or a shrapnel. A plug post 18 is provided at the middle of the upper end of the rear wheel frame 9. A rear wheel 10 is rotatably installed on each side of the rear wheel frame 9. The two sides of the rotating shaft of the spare wheel 11 are Each side is rotatably connected to a docking tube 14, and one of the docking tubes 14 on the spare wheel 11 is selected to be sleeved on the plug post 18. The front end of the rear wheel frame 9 is provided with two docking tubes 14 that are plugged into the rear fork shaft 7 one by one. The bottom of the above four docking tubes 14 is provided with a through positioning hole 15, and a push rod 21 is slidably installed in the positioning hole 15. The bottom of the docking tube 14 is also equipped with an unlocking button 17 connected to the push rod 21. The two rear fork shafts 7 are respectively inserted into the corresponding docking tubes 14 of the rear wheel frame 9, and the plungers 12 on the rear fork shaft 7 are buckled into the corresponding positioning holes 15.

[0021] Figure 1 The three-wheeled stroller is shown in a normal use, but it can also be transformed into other forms. First, the two unlocking buttons 17 on the rear wheel frame 9 are pressed. The push rod 21 on the unlocking button 17 pushes out the plunger 12 in the positioning hole 15. The two docking sleeves 14 on the rear wheel frame 9 can then be pulled out of the two rear fork shafts 7, thus separating the rear wheel frame 9 from the frame 1. Next, the spare wheel 11 placed on the rear wheel frame 9 is removed. The two docking sleeves 14 on the spare wheel 11 are respectively aligned with the corresponding rear fork shafts 7 and inserted. At the same time, the plungers 12 on the rear fork shafts 7 are buckled into the positioning holes 15 of the corresponding docking sleeves 14, thus connecting and fixing the rear wheel frame 9 and the spare wheel 11. In this way, the two-wheeled balance vehicle is transformed.

[0022] As a preferred embodiment of the front wheel assembly, the front wheel assembly includes a front fork 2, a front wheel 3 and a handlebar 5. The front fork 2 is rotatably mounted on the front end of the frame 1. The front wheel 3 and a pedal 4 for controlling the front wheel 3 are mounted on the lower part of the front fork 2. The handlebar 5 for controlling the steering of the front wheel 3 is mounted on the front fork 2.

[0023] As a preferred solution for the docking tube 14, a guide groove 16 is provided at the bottom of the inlet end of the docking tube 14, and the depth of the guide groove 16 gradually decreases from the inlet end to the fixed end; the guide groove 16 is provided to guide the entry direction of the plunger 12, so that the plunger 12 on the rear fork shaft 7 can be smoothly buckled into the corresponding positioning hole 15.

[0024] As a preferred solution for the insertion column 18, a spring clip 19 is provided on the side of the insertion column 18, and a protrusion 20 that cooperates with the positioning hole 15 is installed on the outer side of the upper part of the spring clip 19; the guide groove 16 can also be used to guide the entry direction of the protrusion 20, so that the protrusion 20 can be buckled into the corresponding positioning hole 15 very smoothly; the insertion column 18 is used to install the spare wheel 11, and a spring clip 19 is provided on the side of the insertion column 18, and the protrusion 20 on the spring clip 19 is buckled with the positioning hole 15, so that the docking sleeve 14 on the spare wheel 11 is not easy to fall off after being sleeved on the insertion column 18, and the docking sleeve 14 can be pulled out only with great effort.

[0025] A detachable push rod assembly 8 is installed at the rear end of the frame 1.

[0026] As a structural description of the unlocking button 17, the unlocking button 17 includes a boss 22 and a button plate 23. A mounting hole 24 is opened in the middle of the upper end of the boss 22. The mounting hole 24 fixes the boss 22 to the bottom of the docking tube 14 through a fastener. A button plate 23 is provided on one side of the middle of the boss 22. There is a pressing gap between the button plate 23 and the bottom of the docking tube 14, so that the button plate 23 has sufficient pressing space, and the push rod 21 is set on the button plate 23.

[0027] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0030] The above is a detailed introduction to a children's three-wheeled stroller provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A three-wheeled stroller for children, comprising a frame (1), a front wheel assembly movably inserted at the front end of the frame (1), and a seat (6) arranged at the upper end of the frame (1), characterized in that: The vehicle also includes a rear wheel frame (9) and a spare wheel (11). A rear fork shaft (7) is installed on each side of the rear end of the frame (1). A retractable plunger (12) is installed on the lower side of the free end of each rear fork shaft (7). An elastic member (13) supporting the plunger (12) is installed inside the rear fork shaft (7). A plug post (18) is provided at the middle of the upper end of the rear wheel frame (9). A rear wheel (10) is rotatably installed on each side of the rear wheel frame (9). A docking sleeve (14) is rotatably connected to each side of the rotating shaft of the spare wheel (11). One of the docking sleeves on the spare wheel (11) is selected. (14) is sleeved on the plug column (18), and the front end of the rear wheel frame (9) is provided with two docking tubes (14) which are plugged into the rear fork shafts (7) in a one-to-one manner. The bottom of the above four docking tubes (14) is provided with a through positioning hole (15), and a push rod (21) is slidably installed in the positioning hole (15). The bottom of the docking tube (14) is also provided with an unlocking button (17) connected to the push rod (21). The two rear fork shafts (7) are respectively inserted into the corresponding docking tubes (14) of the rear wheel frame (9), and at the same time, the plunger (12) on the rear fork shaft (7) is buckled into the corresponding positioning hole (15).

2. A three-wheeled stroller for children according to claim 1, characterized in that: The front wheel assembly comprises a front fork (2), a front wheel (3) and a handlebar (5); the front fork (2) is rotatably mounted on the front end of the frame (1); the front wheel (3) and a pedal (4) for controlling the front wheel (3) are mounted on the lower part of the front fork (2); and the handlebar (5) for controlling the steering of the front wheel (3) is mounted on the front fork (2).

3. The three-wheeled stroller for children according to claim 1, characterized in that: A guide groove (16) is provided at the bottom of the inlet end of the docking tube (14), and the depth of the guide groove (16) gradually decreases from the inlet end toward the fixed end.

4. The three-wheeled stroller for children according to claim 1, characterized in that: A spring piece (19) is provided on the side of the plug post (18), and a protrusion (20) that matches the positioning hole (15) is installed on the outer side of the upper part of the spring piece (19).

5. The three-wheeled stroller for children according to claim 1, characterized in that: A detachable push rod assembly (8) is installed at the rear end of the vehicle frame (1).

6. The three-wheeled stroller for children according to claim 1, characterized in that: The unlocking button (17) includes a boss (22) and a button plate (23), wherein the boss (22) is fixed to the bottom of the docking tube (14) by a fastener, and a button plate (23) is provided on one side of the middle of the boss (22), and a pressing gap exists between the button plate (23) and the bottom of the docking tube (14), and the push rod (21) is provided on the button plate (23).

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