TWM658510U - Dual front wheel tricycle - Google Patents

Abstract

This creation is a double front wheel tricycle structure, including a traditional frame, a steering shaft and steering ball joint connecting rod assembly, a pair of swing arm assembly, a main swing arm and ball joint connecting rod assembly, a pair of front forks, a pair of front wheels and a rear wheel. The steering shaft assembly is composed of a handlebar, a faucet, a steering swing arm and a ball joint connecting rod, and the left and right front forks are connected by a left and right parallel mechanism, a main swing arm and a ball joint connecting rod. In this way, after the components are connected to each other, the left and right front wheels can be adjusted vertically up and down according to the road conditions, and when the rider turns, the three wheels can be tilted sideways with the ground, achieving safer control.

Description

Double front wheel tricycle

The invention relates to a tricycle, in particular to a tricycle structure with double front wheels, the structure of which can adjust the height of the double front wheel steering axis according to the road conditions, especially when turning, the body can be tilted sideways with the three wheels on the ground to resist the centrifugal force. The main steering mechanism is the steering axis of the traditional frame and is connected to the left and right front forks through the main steering swing arm and the left and right ball joint connecting rods. The upper and lower swing arm assemblies on the left and right sides pivoted on the frame pivot are connected to the left and right front forks to form a parallel mechanism that operates independently on the left and right sides. The main swing arm is connected to the left and right ball head connecting rods to form a complete swing component. The left and right suspension assemblies tilt sideways as the frame tilts, maintaining the three wheels on the ground, achieving the purpose of adjusting the driving stability according to the cornering and road conditions.

A steering suspension assembly with a tilting function applied to the front section of a dual front wheel tricycle. Currently, vehicles with a tilting function mainly use a double A-arm method derived from automobile technology. The method is to connect the double A-arms with the pivot arm of the shock absorber and the main frame, and connect them to each other to generate a quadrilateral structure. According to this method, the wheels are linked to generate a tilting angle as the main frame tilts left and right. Generally speaking, the vehicle with the tilting structure has the dual characteristics of comfort and active safety, but due to the complex structure, the width of the main body is increased, the manufacturing cost is increased, and the weight of the whole vehicle is increased. In view of this, there is a need to improve the above-mentioned existing technology. Therefore, trying to solve the above-mentioned problems has become the purpose of proposing this invention.

This invention is a double front wheel tricycle structure. This structure can maintain the agility of a traditional two-wheeled vehicle, especially the body tilting function when the three wheels are on the ground, which significantly improves the shortcomings of traditional two-wheeled vehicles that are unstable when driving on rough roads and turning. Its structure includes handlebars, steerer, steering shaft and main steering swing arm, and the left and right steering swing arms are connected by a steering ball joint connecting rod to form a steering structure. The left and right sides of the frame head tube are respectively provided with upper and lower end pivots, which are pivotally connected to the left and right upper and lower end pivots. , and then connected to the left and right front forks to form a parallel mechanism that can operate independently on the left and right sides; a pivot is set on the front side of the head tube of the frame, pivoting the main swing arm, and connecting the left and right lower swing arms with the left and right ball joints to form a swing structure. When the frame tilts and swings sideways, the connecting parts link the left and right parallel mechanisms to swing and displace in opposite directions, so that the two front wheels move up and down vertically in opposite directions, achieving the purpose of side tilting, thereby improving the comfort and safety of the rider.

10: Frame

11: Tire set

12: Handlebars

13: Dragon head

14: Main steering shaft

15: Main steering shaft swing arm

17: Turn to swing arm

18: Turn the ball joint to the connecting rod

19: Main rocker arm pivot

20: Main rocker arm

21: Main rocker arm bearing

22: Rocker ball joint connecting rod

23: Upper rocker arm pivot

24: Lower rocker arm pivot

25: Rocker arm bearing

26: Left arm swing

27: Left arm swing

28: Right side upper arm swing

29: Right side arm swing

30: Fixed seat

31: Front fork

32: Ball joint

33: Ball joint fixing nut

Figure 1 3D image of this work

Figure 2: Decomposition diagram of the main structure of this creation

Figure 3 Front view of this work

Figure 4 A bird's-eye view of this work

Figure 5 Left side view of this work

Figure 6 Right side view of this work

Figure 7 Left-tilted front view of this work

Figure 8: Front view of this work tilted right

Regarding the implementation of this work, please note the diagrams provided in this work. The same functional components are represented by the same numbers, and the diagrams provided are only used as auxiliary explanations and are not used to limit this work.

Please refer to Figures 1, 5 and 6, which reveal a two-wheeled tricycle before this invention, whose front suspension structure includes a frame 10, a tire set 11, a handlebar 12, a faucet 13, a main steering shaft swing arm 15, a steering swing arm 17, a steering ball joint connecting rod 18, a main swing arm 20, a swing arm ball joint connecting rod 22, a left upper swing arm 26, a left lower swing arm 27, a right upper swing arm 28, a right lower swing arm 29 and a front fork 31.

Please refer to FIG. 2, which shows that in order to allow smooth control and tilting movement, the upper swing arm pivot 23 and the lower swing arm pivot 24 are respectively connected to the left upper swing arm 26, the left lower swing arm 27, the right upper swing arm 28 and the right lower swing arm 29 by means of the upper swing arm pivot 23 and the lower swing arm pivot 24 arranged on both sides of the head tube of the frame 10, and are connected to the front fork 31 by the ball joint 32 arranged on the upper and lower ends of the left and right front forks 31, so as to form a parallel mechanism in which the left and right sides can be independently pivoted and swung; the front side of the head tube of the frame 10 is also provided with a main swing arm pivot 19 to pivot the main swing arm 20, and the left and right ends of the main swing arm 20 are each provided with a connecting The connecting hole is used to fix one end of the rocker ball joint connecting rod 22, and a fixing seat 30 is welded on each of the left lower rocker arm 27 and the right lower rocker arm 29 to fix the other end of the rocker ball joint connecting rod 22. The purpose is to make the left and right parallel mechanisms mutually connected through the connection between the main rocker arm 20 and the rocker ball joint connecting rod 22; the handlebar 12 and the faucet 13 are fixed to the upper end of the main steering shaft 14 passing through the head tube of the frame 10, and the main steering shaft rocker arm 15 is fixed to the lower end of the main steering shaft 14 and connected to the left and right steering rocker arms 17 by the left and right steering ball joint connecting rods 18 to form a complete steering mechanism.

Please refer to Figure 7, which shows that when the three-wheeled vehicle is on the ground and the frame 10 tilts to the left, the left parallel mechanism is limited by the connection limit, and the left upper swing arm 26 and the left lower swing arm 27 pivot upward with the pivot as the axis, and the left swing arm ball head connecting rod 22 connected to the left fixed seat 30 links the main swing arm 20 Upward, the main rocker arm 20 is pivoted by the main rocker arm pivot 19, limiting the displacement direction, so that the main rocker arm 20 is converted into a counterclockwise circular motion. At the same time, the right upper rocker arm 28 and the right lower rocker arm 29 of the right parallel mechanism are linked by the right rocker arm ball head connecting rod 22, pivoting and swinging downward with the rocker arm pivot as the axis.

Please refer to FIG. 8 , which shows that when the three-wheeled vehicle is on the ground and the frame 10 tilts to the right, the right parallel mechanism is limited by the connection limit, and the right upper swing arm 28 and the right lower swing arm 29 pivot upward with the pivot as the axis, and the right swing arm ball head connecting rod 22 connected to the right side fixing seat 30 links the main swing arm 20 Upward, the main rocker arm 20 is pivoted by the main rocker arm pivot 19, limiting the displacement direction, so that the main rocker arm 20 is converted into a circular motion in the clockwise direction. At the same time, the left upper rocker arm 26 and the left lower rocker arm 27 of the left parallel mechanism are linked by the left rocker arm ball head connecting rod 22, pivoting and swinging downward with the rocker arm pivot as the axis.

This invention provides a dual front wheel tricycle with the function of tilting the body to the left or right when turning, which can effectively improve the comfort and safety of the rider, while maintaining a stable travel and turning axis. In summary, there is no similar product before the application, so this invention is practical and novel, so I have filed an application in accordance with the law, and I kindly ask for your review.

10: Frame

11: Tire set

12: Handlebars

13: Dragon head

15: Main steering shaft swing arm

17: Turn to swing arm

18: Turn the ball joint to the connecting rod

20: Main rocker arm

22: Rocker ball joint connecting rod

26: Left arm swing

27: Left arm swing

28: Right side upper arm swing

29: Right side arm swing

30: Fixed seat

31: Front fork

Claims (6)

A double front wheel tricycle structure includes: a frame, including a main swing arm pivot arranged on the front side of the frame head tube, upper swing arm pivots and lower swing arm pivots arranged on the left and right sides of the frame head tube, and lower ends; a left parallel mechanism, including a left upper swing arm, a left lower swing arm and a left front fork connected by upper and lower end ball joints and other components pivoted to the left upper and lower ends of the frame head tube pivot; a right parallel mechanism, including a right upper swing arm, a right lower swing arm and a right front fork pivoted to the right upper and lower ends of the frame head tube pivot It is composed of the right front fork and other parts connected by upper and lower ball joints; a main swing arm, which is pivoted on the pivot on the front side of the head tube of the frame, and has a connecting hole at the left and right ends; and a steering mechanism, including a handlebar, a faucet, a main steering shaft, a main steering shaft swing arm, a steering swing arm, and a steering ball joint connecting rod, wherein the main steering shaft passes through the head tube of the frame, the faucet is fixed on the upper end of the main steering shaft, the main steering shaft swing arm is fixed on the lower end of the main steering shaft and connected to the left and right steering swing arms by left and right steering ball joint connecting rods. As described in item 1 of the patent application scope, the structure of a double front wheel tricycle, wherein the upper and lower end ball joints are respectively mounted and fixed on the upper end and lower end of the front fork upper tube. As described in the first item of the patent application scope, the structure of the double front wheel tricycle has a fixed seat welded on the left lower swing arm, and one end of the left swing arm ball head connecting rod is installed and fixed thereon; a connecting hole is provided at the left end of the main swing arm, and the other end of the left swing arm ball head connecting rod is installed and fixed thereon. As described in the first item of the patent application scope, the structure of the double front wheel tricycle has a fixed seat welded on the right lower rocker arm, and one end of the right rocker arm ball head connecting rod is installed and fixed thereon; a connecting hole is provided at the right end of the main rocker arm, and the other end of the right rocker arm ball head connecting rod is installed and fixed thereon. The structure of a three-wheeled vehicle with two front wheels as described in Item 1 of the patent application, wherein the front wheel assembly is mounted on the front fork fixing hole. As described in item 1 of the patent application scope, the double front wheel tricycle structure, wherein the rear wheel assembly is mounted on the rear fork fixing hole of the frame.

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