CN215553798U

CN215553798U - Children bicycle with stable structure

Info

Publication number: CN215553798U
Application number: CN202120935890.0U
Authority: CN
Inventors: 杨涛
Original assignee: Tianjin Ruifeng Technology Co Ltd
Current assignee: Tianjin Ruifeng Technology Co Ltd
Priority date: 2021-05-05
Filing date: 2021-05-05
Publication date: 2022-01-18
Anticipated expiration: 2031-05-05

Abstract

The utility model discloses a children bicycle with a stable structure, which comprises a frame, a rear wheel, a front wheel, a U-shaped frame and a flat plate, one side of the bottom of the frame is rotationally connected with the middle of the front wheel through a wheel shaft, the other side of the bottom of the frame is rotationally connected with the middle of the rear wheel through a wheel shaft, round blocks are respectively fixed at the front end and the rear end of the wheel shaft on the rear wheel, connecting plates are respectively fixed at the bottom ends of the two round blocks, the bottom ends of the two connecting plates are respectively fixed with the upper surfaces of the two flat plates, inner columns are respectively fixed at the lower surfaces of the two flat plates, the two inner columns are respectively inserted into the two sleeves, the spring is installed between sleeve pipe top and the dull and stereotyped lower surface, two sheathed tube bottom is fixed respectively in the centre on two U-shaped frame tops, two the both sides of U-shaped frame inner wall bottom are rotated through the pivot respectively and are installed the auxiliary wheel. The utility model has the advantages that the elastic mechanism is arranged at the joint of the auxiliary wheel and the frame, and the buffer and shock absorption effects are achieved.

Description

Children bicycle with stable structure

Technical Field

The utility model relates to the technical field of children's bicycles, in particular to a children's bicycle with a stable structure.

Background

Bicycles are typically two-wheeled small land vehicles. After a person rides the vehicle, the person steps on the pedal as power, and the vehicle is a green and environment-friendly vehicle. The bicycle can be used as an environment-friendly vehicle for riding instead of walking and going out; more and more people use bicycles as fitness equipment for riding exercise and bicycle touring.

By child bicycle is meant a bicycle suitable for 4-8 years old children, with a maximum saddle height of 435-635 mm, riding by means of a driving mechanism acting on the rear wheel. Various wheel diameters and various styles with or without balance wheels. Children's bicycles cannot be used for road riding.

The rear wheel both sides of children's bicycle can dispose the auxiliary wheel basically, and the frame of auxiliary wheel and rear wheel department is direct hard fixed, and is not comfortable enough when children ride.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a child bicycle with a stable structure, which has the advantages that an elastic mechanism is arranged at the joint of an auxiliary wheel and a frame, the effect of buffering and shock absorption is achieved, the child bicycle is more comfortable to ride, and the problem that the auxiliary wheel and the frame at the rear wheel are directly and rigidly fixed and the child bicycle is not comfortable to ride is solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a children bicycle with a stable structure, which comprises a frame, a rear wheel, a front wheel, a U-shaped frame and a flat plate, one side of the bottom of the frame is rotationally connected with the middle of the front wheel through a wheel shaft, the other side of the bottom of the frame is rotationally connected with the middle of the rear wheel through a wheel shaft, round blocks are respectively fixed at the front end and the rear end of the wheel shaft on the rear wheel, connecting plates are respectively fixed at the bottom ends of the two round blocks, the bottom ends of the two connecting plates are respectively fixed with one side of the upper surfaces of the two flat plates, inner columns are respectively fixed in the middles of the lower surfaces of the two flat plates, the two inner columns are respectively inserted into the two sleeves, the spring is installed between sleeve pipe top and the dull and stereotyped lower surface, two sheathed tube bottom is fixed respectively in the centre on two U-shaped frame tops, two the both sides of U-shaped frame inner wall bottom are rotated through the pivot respectively and are installed the auxiliary wheel.

Preferably, a handlebar is fixed at the top end of one side of the frame.

Preferably, a cushion is fixed at the top end of the other side of the frame through a locking device.

Preferably, a chain wheel is rotatably arranged in the middle of the bottom of the frame, pedals are respectively fixed at the front end and the rear end of the chain wheel, a flywheel is fixed on the rear wheel, and the chain wheel is in transmission connection with the flywheel on the rear wheel through a chain.

Preferably, the axle is fixed to the frame, and the rear and front wheels are rotatable relative to the frame via the axle.

Preferably, the spring sleeve is on the inner column, and the spring is not fixed with the inner column, and the spring top is fixed with dull and stereotyped lower surface, and the spring bottom is fixed with the sleeve pipe top.

Preferably, the auxiliary wheel bottom end, the rear wheel bottom end and the front wheel bottom end are aligned.

Compared with the prior art, the utility model has the following beneficial effects: the utility model achieves the effect of buffering and damping the joint of the auxiliary wheel and the frame by arranging the inner column, the sleeve and the spring. The bicycle is provided with the inner column, the sleeve and the spring, when the bicycle runs on uneven ground, the inner column can move up and down in the sleeve when the auxiliary wheel passes through the uneven ground, along with the movement of the inner column in the sleeve, the distance between the top end of the sleeve and the lower surface of the flat plate is increased or reduced, the spring contracts or stretches, along with the contraction or stretching of the spring, the spring can generate reverse elastic force to buffer, and the connection part of the auxiliary wheel and the bicycle frame is buffered and damped through the spring.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a front view of the rear wheel attachment of the present invention;

FIG. 3 is a side view of the rear wheel attachment of the present invention;

fig. 4 is an enlarged schematic view of fig. 3 a according to the present invention.

In the figure: 1. a handlebar; 2. a frame; 3. a cushion; 4. a rear wheel; 5. a chain; 6. a foot pedal; 7. a chain wheel; 8. a front wheel; 9. a round block; 10. a connecting plate; 11. an inner column; 12. a sleeve; 13. a U-shaped frame; 14. an auxiliary wheel; 15. a spring; 16. a flat plate; 17. a wheel axle; 18. a rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, an embodiment of the present invention: the utility model provides a children bike with stable structure, includes frame 2, rear wheel 4 and

front wheel

8, and 2 one side tops of frame are fixed with handlebar hand 1, and 2 opposite side tops of frame are fixed with cushion 3 through locking device, and the height of cushion 3 can be adjusted. One side of the bottom of the frame 2 is rotatably connected with the middle of the front wheel 8 through a wheel shaft 17, the other side of the bottom of the frame 2 is rotatably connected with the middle of the rear wheel 4 through the wheel shaft 17, the wheel shaft 17 is fixed with the frame 2, and the rear wheel 4 and the front wheel 8 rotate relative to the frame 2 through the wheel shaft 17. A chain wheel 7 is rotatably arranged in the middle of the bottom of the frame 2, pedals 6 are respectively fixed at the front end and the rear end of the chain wheel 7, a flywheel is fixed on the rear wheel 4, and the chain wheel 7 is in transmission connection with the flywheel on the rear wheel 4 through a chain 5. When riding, the pedal 6 is stepped on by feet to drive the chain wheel 7 to rotate, the chain wheel 7 drives the flywheel on the rear wheel 4 to rotate through the chain 5, so that the rear wheel 4 is driven to rotate, and the bicycle moves forwards.

Example 2

Referring to fig. 1 to 4, an embodiment of the present invention includes: the utility model provides a children bike with stable structure, including rear wheel 4, U-shaped frame 13 and dull and stereotyped 16, rear wheel 4 goes up the front and back both ends of shaft 17 and is fixed with the boss 9 respectively, two boss 9 bottoms are fixed with connecting plate 10 respectively, the bottom of two connecting plates 10 is fixed with two dull and stereotyped 16 upper surface one sides respectively, the centre of two dull and stereotyped 16 lower surfaces is fixed with interior post 11 respectively, two interior posts 11 inject two sleeve pipes 12 respectively in, install spring 15 between sleeve pipe 12 top and the dull and stereotyped 16 lower surface, spring 15's coefficient of elasticity is selected by oneself to use by the technical staff of this specialty according to actual conditions. The spring 15 is sleeved on the inner column 11, the spring 15 is not fixed with the inner column 11, the top end of the spring 15 is fixed with the lower surface of the flat plate 16, and the bottom end of the spring 15 is fixed with the top end of the sleeve 12. The bottom ends of the two sleeves 12 are respectively fixed in the middle of the top ends of the two U-shaped frames 13, the two sides of the bottom of the inner walls of the two U-shaped frames 13 are respectively rotatably provided with an auxiliary wheel 14 through a rotating shaft 18, and the bottom ends of the auxiliary wheels 14, the bottom ends of the rear wheels 4 and the bottom ends of the front wheels 8 are aligned. When riding, the auxiliary wheel 14 runs through uneven ground, the inner column 11 can move up and down in the sleeve 12, along with the movement of the inner column 11 in the sleeve 12, the distance between the top end of the sleeve 12 and the lower surface of the flat plate 16 is increased or reduced, the spring 15 contracts or stretches, along with the contraction or stretching of the spring 15, the spring 15 can generate reverse elastic force to buffer, and the connection between the auxiliary wheel 14 and the frame 2 is buffered and damped through the spring 15.

The working principle is as follows: when the auxiliary wheel 14 passes through an uneven ground, the inner column 11 moves up and down in the sleeve 12, the distance between the top end of the sleeve 12 and the lower surface of the flat plate 16 is increased or reduced along with the movement of the inner column 11 in the sleeve 12, the spring 15 contracts or stretches, and the spring 15 generates reverse elastic force to buffer along with the contraction or stretching of the spring 15.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A children's bicycle with stable structure, includes frame (2), rear wheel (4), preceding wheel (8), U-shaped frame (13) and flat board (16), its characterized in that: one side of the bottom of the frame (2) is rotatably connected with the middle of a front wheel (8) through a wheel shaft (17), the other side of the bottom of the frame (2) is rotatably connected with the middle of a rear wheel (4) through the wheel shaft (17), round blocks (9) are respectively fixed at the front end and the rear end of the wheel shaft (17) on the rear wheel (4), connecting plates (10) are respectively fixed at the bottom ends of the two round blocks (9), the bottom ends of the two connecting plates (10) are respectively fixed at one side of the upper surfaces of the two flat plates (16), inner columns (11) are respectively fixed in the middle of the lower surfaces of the two flat plates (16), the two inner columns (11) are respectively inserted into the two sleeves (12), a spring (15) is installed between the top end of each sleeve (12) and the lower surface of the corresponding flat plate (16), and the bottom ends of the two sleeves (12) are respectively fixed in the middle of the top ends of the two U-shaped frames (13), two sides of the bottom of the inner wall of each of the two U-shaped frames (13) are respectively provided with an auxiliary wheel (14) in a rotating way through a rotating shaft (18).

2. A children's bicycle with stabilized structure, as claimed in claim 1, wherein: and a handlebar (1) is fixed at the top end of one side of the frame (2).

3. A children's bicycle with stabilized structure, as claimed in claim 1, wherein: and a cushion (3) is fixed at the top end of the other side of the frame (2) through a locking device.

4. A children's bicycle with stabilized structure, as claimed in claim 1, wherein: a chain wheel (7) is rotatably mounted in the middle of the bottom of the frame (2), pedals (6) are respectively fixed to the front end and the rear end of the chain wheel (7), a flywheel is fixed to the rear wheel (4), and the chain wheel (7) is in transmission connection with the flywheel on the rear wheel (4) through a chain (5).

5. A children's bicycle with stabilized structure, as claimed in claim 1, wherein: the wheel shaft (17) is fixed with the frame (2), and the rear wheel (4) and the front wheel (8) rotate relative to the frame (2) through the wheel shaft (17).

6. A children's bicycle with stabilized structure, as claimed in claim 1, wherein: the spring (15) is sleeved on the inner column (11), the spring (15) is not fixed with the inner column (11), the top end of the spring (15) is fixed with the lower surface of the flat plate (16), and the bottom end of the spring (15) is fixed with the top end of the sleeve (12).

7. A children's bicycle with stabilized structure, as claimed in claim 1, wherein: the bottom ends of the auxiliary wheels (14), the rear wheels (4) and the front wheels (8) are aligned.