Three-wheel baby carriage convenient to operate and carry

Abstract

The child tricycle convenient to operate and carry comprises a tricycle frame, the tricycle frame comprises a main frame, a front wheel front fork assembly and a rear wheel rear fork assembly, the main frame comprises a head pipe and a seat pipe, the front wheel front fork assembly comprises a front fork frame, the front fork frame comprises a straight pipe and a U-shaped pipe support, the straight pipe is arranged in the head pipe in a sleeved mode, and the U-shaped pipe support is arranged on the front wheel front fork assembly. The upper end of the straight pipe protrudes out of the head pipe and is fixedly connected with the head pipe through an upper cover, the lower end of the straight pipe is fixedly connected with the head pipe through a lower cover, the straight pipe is adjustably sleeved with a handle assembly, a front wheel assembly is arranged on the U-shaped pipe support, the front end of the seat pipe is connected with the head pipe, the rear end of the seat pipe upwards forms a bent section, and a tail warping plate is correspondingly arranged on the seat pipe. The rear wheel rear fork assembly comprises a rear fork frame, the upper end of the rear fork frame is detachably connected to the bent position of the rear end of the seat tube through an elastic assembly, and two rear wheels are symmetrically arranged at the lower end of the rear fork frame. The front portion and the rear portion of the frame can be detached, the containing size of the baby carriage is reduced, and the seat tube is designed to be tilted backwards and is simple and attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of baby carriages, in particular to a three-wheeled baby carriage which is easy to operate and carry. Background Art

[0002] Children's strollers are a major category of children's toys, including children's bicycles, children's strollers, baby walkers, children's tricycles, children's electric vehicles, etc. With the growth of population, the demand for children's strollers is gradually increasing. In order to provide children with better riding enjoyment and convenience of carrying, users have increasingly stringent requirements on the functions of children's strollers. One of the more obvious requirements is that the vehicle should be easy to store and carry.

[0003] For example, a children's tricycle is a common toy for children, but existing children's tricycles are generally not easy to disassemble. In order to reduce the storage volume, they can generally only be folded at the front fork, and the frame remains as a whole. In this way, when the tricycle is idle at home or transported, it still takes up a large space, which is not conducive to storage and carrying. Utility Model Content

[0004] The utility model aims to provide a three-wheeled baby carriage which is easy to operate and carry, so as to solve the problems in the prior art that the child tricycle is difficult to disassemble, has a large folding volume, and is inconvenient to store and carry.

[0005] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0006] The rear wheel fork assembly comprises a rear fork frame, the upper end of the rear fork frame is detachably connected to the rear end bending part of the seat tube through an elastic component, and two rear wheels are symmetrically arranged at the lower end of the rear fork frame.

[0007] Preferably, the front wheel assembly described above includes a front wheel fixing seat and a curved rod. On both sides of the front wheel fixing seat, a first fixing member, a second fixing member, a curved rod support piece, and a front fork foot piece are sequentially arranged, and all are inserted through the curved rod. A first curved rod disc is welded on the curved rod, and a second curved rod disc is movably sleeved. The two first fixing members, the front wheel fixing seat, the first curved rod disc, and the second curved rod disc are fixedly connected by screws and nuts. The second fixing member is tightly fitted on the first fixing member. The front fork foot piece is welded to the U-shaped tube bracket. The front fork foot piece is inserted into the curved rod support piece and is connected to the second fixing member by screws and nuts. A front wheel is sleeved on the front wheel fixing seat, and pedals are arranged at both ends of the curved rod.

[0008] Preferably, the front fork foot piece described above is an L-shaped part. A clamping groove is provided on the curved rod support piece, and one end of the front fork foot piece is clamped into the clamping groove.

[0009] Preferably, on one side of the second fixing member, a mounting platform protrudes. A decorative cover is sleeved on the mounting platform. One end of the U-shaped tube bracket penetrates into the decorative cover, and the curved rod support piece and the front fork foot piece are located inside the decorative cover.

[0010] Preferably, the above further includes a lock cover. Convex ribs are symmetrically arranged on the inner wall of the lock cover. Lock grooves are provided corresponding to the convex ribs at the upper end of the straight tube. An installation hole is also provided at the upper end of the straight tube.

[0011] Preferably, the handlebar assembly described above includes a Y-shaped handlebar bracket. At least two groups of adjustment holes are spacedly arranged on the main rod of the Y-shaped handlebar bracket. Grips are connected to the two end struts. The adjustment holes and the installation holes are fixedly connected by screws and nuts.

[0012] Preferably, a limiting stop piece is also welded at the lower end of the straight tube, and the limiting stop piece is located below the lower cover. Two limiting grooves are formed on the limiting stop piece. Two limiting blocks protrude below the lower cover, and the two limiting blocks rotate in the two limiting grooves respectively. A convex platform also protrudes from the side of the lower cover, and a notch is provided corresponding to the convex platform at the lower end of the head tube.

[0013] Preferably, a fixing plate is provided at the bent portion of the seat tube. Two connecting sleeves are provided below the fixing plate. The rear fork frame is detachably connected to the two connecting sleeves through an elastic component.

[0014] Preferably, the elastic component includes a marble and a V-shaped spring. The rear fork includes two integrally formed connecting pipes and a support pipe. The connecting pipes and the connecting sleeve are respectively provided with corresponding marble holes. The lower end of the connecting pipe is provided with a rear wheel. The connecting pipe is sleeved outside the connecting sleeve. The marble sequentially passes through the marble holes on the connecting pipe and the connecting sleeve and is fixedly connected to the V-shaped spring located inside the connecting sleeve.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] (1) The three-wheel baby carriage of the present utility model has a simple structure. The handlebar assembly is adjustably installed on the main pipe of the front wheel fork assembly, which is convenient for adjusting the height of the handlebar, making the baby carriage suitable for different usage requirements and improving the comfort of using the baby carriage.

[0017] (2) The rear wheel rear fork assembly is detachably connected to the seat tube of the main frame through an elastic component, so that the front and rear of the frame can be disassembled, greatly reducing the storage volume of the baby carriage, facilitating packaging, transportation, outdoor carrying, etc. At the same time, it is also convenient for rapid assembly, improving the operation convenience of the baby carriage.

[0018] (3) The rearward tilt design of the seat tube enables it to function as a backrest and a rear armrest, reducing traditional designs such as backrests and rear armrests. The integrated seat tube design also makes the baby carriage more beautiful and reduces a certain storage volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is Figure 1 an enlarged schematic structural diagram of part A in

[0021] Figure 3 a schematic cross-sectional structural diagram of the front wheel assembly in the present utility model;

[0022] Figure 4 is a disassembled schematic structural diagram among the Y-shaped handlebar bracket, the front fork, the lower cover, the upper cover and the lock cover in the present utility model;

[0023] Figure 5 is a schematic structural diagram of the present utility model installed on the main frame.

[0024] In the figure: 1 - head tube; 2 - seat tube; 3 - straight tube; 4 - U-shaped tube bracket; 5 - upper cover; 6 - lower cover; 7 - rear wheel; 8 - front wheel fixing seat; 9 - curved rod; 10 - first fixing part; 11 - second fixing part; 12 - curved rod support piece; 13 - front fork foot piece; 14 - first curved rod disc; 15 - second curved rod disc; 16 - front wheel; 17 - pedal; 18 - decorative cover; 19 - lock cover; 20 - Y-shaped handle bracket; 21 - handle grip; 22 - limit stop piece; 23 - fixing plate; 24 - connecting sleeve; 25 - ball; 26 - V-shaped spring; 27 - connecting pipe; 28 - support pipe; 29 - tail winger; 30 - seat cushion; 101 - notch; 301 - lock groove; 302 - mounting hole; 601 - limit block; 602 - boss; 1901 - rib; 2001 - adjustment hole; 2201 - limit groove. Detailed implementation manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figures 1 - 5 shown, a three-wheeled baby carriage that is convenient to operate and carry includes a frame. The frame includes a main frame, a front wheel fork assembly, and a rear wheel fork assembly. The main frame includes a head tube 1 and a seat tube 2. The front wheel fork assembly includes a fork frame. The fork frame includes an integrally formed straight tube 3 and a U-shaped tube bracket 4. The straight tube 3 is sleeved in the head tube 1, and the upper end of the straight tube 3 protrudes from the head tube 1 and is fixedly connected to the head tube 1 through an upper cover 5, and the lower end is fixedly connected to the head tube 1 through a lower cover 6. A handle assembly is adjustably sleeved on the straight tube 3. A front wheel assembly is provided on the U-shaped tube bracket 4. The front end of the seat tube 1 is connected to the head tube 2, and the rear end forms a bent section upward. A tail winger 29 is correspondingly provided on the seat tube 1, and a seat cushion 30 is correspondingly provided on the tail winger 29. The rear wheel fork assembly includes a rear fork frame. The upper end of the rear fork frame is detachably connected to the bent portion at the rear end of the seat tube 1 through an elastic assembly. Two rear wheels 7 are symmetrically provided at the lower end of the rear fork frame.

[0027] The three-wheeled baby stroller of the utility model has a simple structure. The handlebar assembly is adjustably mounted on the main pipe 1 of the front wheel front fork assembly, which is convenient for adjusting the height of the handlebar, so that the baby stroller is suitable for different use requirements and the use comfort of the baby stroller is improved; the rear wheel rear fork assembly is detachably connected to the seat pipe 2 of the main frame through an elastic component, so that the frame can be disassembled front and back, which greatly reduces the storage volume of the baby stroller, is convenient for packaging and transportation, and is easy to carry out, and is also convenient for quick assembly, which improves the convenience of operation of the baby stroller; the rear tilted design of the seat pipe 2 makes it play the role of a backrest and a rear armrest, reducing the traditional designs of a backrest, a rear armrest, etc. The integrated seat pipe 2 design also makes the baby stroller more beautiful and reduces a certain storage volume.

[0028] Furthermore, the front wheel assembly includes a front wheel fixing seat 8 and a crankshaft 9, and a first fixing member 10, a second fixing member 11, a crankshaft support piece 12 and a front fork leg piece 13 are sequentially arranged on both sides of the front wheel fixing seat 8, and are all penetrated on the crankshaft 9, a first crankshaft disc 14 and a second crankshaft disc 15 are welded on the crankshaft 9, the two first fixing members 10, the front wheel fixing seat 8, the first crankshaft disc 14 and the second crankshaft disc 15 are fixedly connected by screws and nuts, the second fixing member 11 is tightly mounted on the first fixing member 10, the front fork leg piece 13 is welded on the U-shaped pipe bracket 4, the front fork leg piece 13 is inserted into the crankshaft support piece 12, and is connected to the second fixing member 11 by screws and nuts, a front wheel 16 is sleeved on the front wheel fixing seat 8, pedals 17 are arranged at both ends of the crankshaft 9, the front fork leg piece 13 is an L-shaped member, a slot is arranged on the crankshaft support piece 12, and one end of the front fork leg piece 13 is inserted into the slot.

[0029] When installing the above design, first pre-install the first fixing member 10 to the two ends of the front wheel fixing seat 8, then pass the bent rod 9 welded with the first bent rod disc 14 through the first fixing member 10 and the front wheel fixing seat 8 in sequence, then set the second bent rod disc 15 on the bent rod 9, and then install the above accessories through the holes with screws and nuts, that is, the installation of the bent rod 9 is completed; then, the second fixing member 11 is tightly installed at the opening of the first fixing member 10, and then the bent rod support piece 12 is sleeved on the bent rod 9, and the front foot insert 13 is inserted into the bent rod support piece 12, and then it is installed with the second fixing member 11 through screws and nuts, and finally the required front wheel 16 and pedal 17 are conventionally installed. The whole structure is tightly connected and easy to operate, which can improve the use stability of the front wheel and fork assembly, thereby improving the use stability and safety of the entire baby carriage.

[0030] Furthermore, one side of the second fixing member 11 protrudes to form a mounting platform, on which a decorative cover 18 is sleeved, one end of the U-shaped pipe bracket 4 penetrates the decorative cover 18, and the curved rod support piece 12 and the front fork leg piece 13 are located in the decorative cover 18. In the above design, the decorative cover 18 can be a left and a right half shell, which are then fixedly connected by self-tapping screws. The design of the decorative cover 18 can cover and protect accessories such as the curved rod support piece 12 and the front fork leg piece 13, thereby ensuring the effectiveness of the product and improving the aesthetics of the baby carriage.

[0031] Furthermore, it also includes a lock cover 19, on the inner wall of which convex ribs 1901 are symmetrically arranged, and the upper end of the straight tube 3 is provided with a lock groove 301 corresponding to the convex ribs 1901, and the upper end of the straight tube 3 is also provided with a mounting hole 302. The above design allows the lock cover 19 to be tightly mounted on the straight tube 3, and when a landmark structure is provided on the lock cover 19, the lock cover 19 can also be positioned and installed in the left and right directions, thereby improving the decorative aesthetics of the product.

[0032] Furthermore, the handle assembly includes a Y-shaped handle bracket 20, at least two groups of adjustment holes 2001 are arranged at intervals on the main rod of the Y-shaped handle bracket 20, and the two end rods are connected with a handle sleeve 21, and the adjustment hole 2001 and the mounting hole 302 are fixedly connected by screws and nuts. The above design can design multiple groups of adjustment holes 2001 of different heights according to needs, and adjust the height of the handle in turn to meet different usage needs.

[0033] Furthermore, a limit stopper 22 is welded to the lower end of the straight tube 3, and the limit stopper 22 is located below the lower cover 6. Two limit slots 2201 are formed on the limit stopper 22. Two limit blocks 601 are formed on the lower part of the lower cover 6, and the two limit blocks 601 are respectively located in the two limit slots 2201 for rotation. A boss 602 is formed on the side of the lower cover 6, and a notch 101 is provided at the lower end of the head tube 1 corresponding to the boss 602. In the above design, the boss 602 cooperates with the notch 101, which is convenient for positioning, installation and fixing; the limit slot 2201 cooperates with the limit block 601, which limits a rotation range of the limit block 601, that is, limits a steering range of the handlebar, thereby improving the stability and safety of the baby carriage.

[0034] Furthermore, a fixing plate 23 is provided at the bend of the seat tube 2, two connecting sleeves 24 are provided below the fixing plate 23, and the rear fork frame is detachably connected to the two connecting sleeves 24 through an elastic component. The above design, the design of the fixing plate 23 and the connecting sleeve 24, on the one hand, strengthens the supporting strength of the seat tube 2, and on the other hand, facilitates the disassembly and assembly of the rear fork frame.

[0035] Furthermore, the elastic component includes a marble 25 and a V-shaped spring 26. The rear fork includes two integrally formed connecting pipes 27 and a support pipe 28. Corresponding marble holes are provided on both the connecting pipe 27 and the connecting sleeve 24. A rear wheel 7 is provided at the lower end of the connecting pipe 27. The connecting pipe 27 is sleeved outside the connecting sleeve 24. The marble 25 sequentially passes through the marble holes on the connecting pipe 27 and the connecting sleeve 24 and is fixedly connected to the V-shaped spring 26 located inside the connecting sleeve 24. With the above design, using the marble structure, the rear fork can be removed by simply pressing the marble 25. Conversely, when the connecting pipe 28 is sleeved into the connecting sleeve 24, when the marble hole on the connecting pipe 28 approaches the marble 25 connected to the connecting sleeve 24, the marble will be squeezed in and then pop out of the marble hole to complete the installation of the two, enabling quick assembly and disassembly, with convenient operation, small volume after disassembly, and being easy to package and carry.

[0036] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-wheeled baby carriage that is easy to operate and carry, comprising a frame, wherein the frame comprises a main frame, a front wheel fork assembly and a rear wheel fork assembly, characterized in that: The main frame includes a head tube and a seat tube, the front wheel front fork assembly includes a front fork frame, and the front fork frame includes an integrally formed straight tube and a U-shaped tube bracket, the straight tube is sleeved in the head tube, and the upper end of the straight tube protrudes from the head tube and is fixedly connected to the head tube through an upper cover, and the lower end is fixedly connected to the head tube through a lower cover, and a handlebar assembly is also adjustably sleeved on the straight tube, a front wheel assembly is arranged on the U-shaped tube bracket, the front end of the seat tube is connected to the head tube, and a bending section is formed upward at the rear end, a tail rocker is correspondingly arranged on the seat tube, and a seat cushion is correspondingly arranged on the tail rocker, and the rear wheel rear fork assembly includes a rear fork frame, the upper end of the rear fork frame is detachably connected to the rear end bending part of the seat tube through an elastic component, and two rear wheels are symmetrically arranged at the lower end of the rear fork frame.

2. A three-wheeled baby carriage that is easy to operate and carry according to claim 1, characterized in that: The front wheel assembly includes a front wheel fixing seat and a crankshaft, and the first fixing piece, the second fixing piece, the crankshaft support piece and the front fork leg piece are sequentially arranged on both sides of the front wheel fixing seat, and are all inserted into the crankshaft, the crankshaft is welded with a first crankshaft round piece and a second crankshaft round piece is movably sleeved, the two first fixing pieces, the front wheel fixing seat, the first crankshaft round piece and the second crankshaft round piece are fixedly connected by screws and nuts, the second fixing piece is tightly mounted on the first fixing piece, the front fork leg piece is welded to the U-shaped tube bracket, the front fork leg piece is inserted into the crankshaft support piece and is connected to the second fixing piece by screws and nuts, the front wheel is sleeved on the front wheel fixing seat, and pedals are arranged at both ends of the crankshaft.

3. A three-wheeled baby carriage that is easy to operate and carry according to claim 2, characterized in that: The front fork leg piece is an L-shaped piece, and a slot is provided on the curved rod support piece, and one end of the front fork leg piece is inserted into the slot.

4. A three-wheeled baby carriage that is easy to operate and carry according to claim 3, characterized in that: One side of the second fixing member protrudes to form a mounting platform, and a decorative cover is sleeved on the mounting platform. One end of the U-shaped tube bracket penetrates the decorative cover, and the curved rod support piece and the front fork leg piece are located in the decorative cover.

5. A three-wheeled baby carriage that is easy to operate and carry according to claim 1, characterized in that: It also includes a lock cover, the inner wall of which is symmetrically provided with convex ribs, the upper end of the straight tube is provided with a lock groove corresponding to the convex ribs, and the upper end of the straight tube is also provided with a mounting hole.

6. A three-wheeled baby carriage that is easy to operate and carry according to claim 5, characterized in that: The handle assembly comprises a Y-shaped handle bracket, wherein at least two groups of adjustment holes are arranged at intervals on the main rod of the Y-shaped handle bracket, and handle sleeves are connected to the support rods at both ends, and the adjustment holes and the mounting holes are fixedly connected by screws and nuts.

7. A three-wheeled baby carriage that is easy to operate and carry according to claim 1, characterized in that: A limit baffle is welded to the lower end of the straight tube, and the limit baffle is located below the lower cover. Two limit grooves are formed on the limit baffle. Two limit blocks are formed on the lower protrusion of the lower cover, and the two limit blocks are respectively located in the two limit grooves for rotation. A boss is also protruded to form a side of the lower cover, and a notch is provided at the lower end of the head pipe corresponding to the boss.

8. A three-wheeled baby carriage that is easy to operate and carry according to claim 1, characterized in that: A fixing plate is arranged at the bending part of the seat tube, two connecting sleeves are arranged below the fixing plate, and the rear fork frame is detachably connected to the two connecting sleeves through an elastic component.

9. A three-wheeled baby carriage that is easy to operate and carry according to claim 8, characterized in that: The elastic component includes a marble and a V-shaped spring, and the rear fork frame includes two integrally formed connecting tubes and a supporting tube. The connecting tube and the connecting sleeve are correspondingly provided with marble holes, and the lower end of the connecting tube is provided with a rear wheel. The connecting tube is sleeved on the outer side of the connecting sleeve, and the marble passes through the marble holes on the connecting tube and the connecting sleeve in turn, and is connected and fixed to the V-shaped spring located on the inner side of the connecting sleeve.

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