CN202863666U - Four-wheel bike capable of enabling two users to ride side by side - Google Patents

Abstract

The utility model discloses a four-wheel bike capable of enabling two users to ride side by side. Two independent bike frames are welded together in a rigid connection mode to form a mouth-shaped frame, and the rigidity is guaranteed. Two back wheels are connected with the frames through swing arms capable of swinging up and down, the swing arms are connected with the frames through pin shafts to adjust the swing amplitude of the swing arms, and a spring shock absorber further can be arranged between the swing arms and the frames to guarantee that four wheels are capable of touching the ground and receiving force uniformly under any conditions.

Description

A four-wheeled bicycle that rides side by side

technical field

The utility model relates to a four-wheeled bicycle for two people to ride side by side. the

Background technique

Usually tandem bicycles are two-wheeled bicycles that ride front and back, and two people need to cooperate with each other to keep driving stable when riding. Because two people ride in front and back, the body is longer and the turning radius of driving is larger. Four-wheeled bicycles are two people riding side by side, and the four wheels are on the ground. They can run smoothly without cooperation, but because the four-wheeled bicycles are on the ground at four points, it is impossible for all four wheels to touch the ground at the same time when the ground is uneven. less. the

Contents of the invention

The purpose of this utility model is to provide a four-wheeled bicycle for two people to ride side by side. The rear wheel adopts a swing arm type suspension, which can automatically adjust the height, so as to ensure that the four wheels can land on the ground at the same time even when the road is uneven. Uniform force. the

For carrying out above-mentioned purpose, the utility model adopts following technical scheme:

A four-wheeled bicycle for two people to ride side by side. Two independent bicycle frames are welded together in a rigid connection to form a mouth-shaped frame to ensure its strength. The two rear wheels are respectively connected to the frame through a swing arm that can swing up and down, and the swing arm is connected to the frame through a pin shaft to adjust the swing range of the swing arm to ensure that the four wheels can touch the ground under various conditions. Uniform force. the

In order to reduce the vibration caused by the swing of the swing arm, a spring shock absorber can be installed between the swing arm and the vehicle frame. the

Further, the inner walls of the two front forks of the four-wheeled bicycle of the present utility model can be connected by a steering trapezoidal mechanism. The steering trapezoidal mechanism includes a tie rod and a steering arm. on the inner wall of the front fork. the

In the four-wheeled bicycle of the utility model, the height of the rear wheels can be automatically adjusted to ensure that the four wheels can land on the ground at the same time even when the road surface is uneven, and the force is evenly applied. the

Description of drawings

Fig. 1 is the axonometric drawing of four-wheel bicycle of the present utility model;

Fig. 2 is the front view of four-wheel bicycle of the present utility model;

In the figure, 1 is the tie rod, 2 is the steering arm, 3 is the handlebar, 4 is the front beam, 5 is the frame, 6 is the seat, 7 is the rear shelf, 8 is the rear wheel, and 9 is the rear suspension arm 10 is a spring shock absorber, 11 is a rear suspension swing arm pin, 12 is a front fork, and 13 is a front wheel. the

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments. the

As shown in Figures 1 and 2, a four-wheeled bicycle for two people to ride side by side includes a tie rod 1, a steering arm 2 (2 pieces), a handlebar 3 (2 pieces), a front beam 4, and a frame 5 (2 pieces). pcs), car seat 6 (2 pcs), rear shelf 7, rear wheel 8 (2 pcs), rear suspension swing arm 9 (2 pcs), spring shock absorber 10 (2 pcs), rear suspension swing arm pin Axle 11 (2 pcs), front fork 12 (2 pcs), front wheel 13 (2 pcs). The pedals, sprocket wheels and chains of ordinary bicycles are respectively housed on the described 2 vehicle frames 5, and the rear wheels can be driven by rotating the pedals to rotate. The front ends of the two vehicle frames 5 are welded together with the front beam 4, and the rear ends are welded together with the rear shelf 7 to form a mouth-shaped frame structure. The front fork 12 is installed in the front end circular tube of the vehicle frame 5 by means of a circular tube connection, and can rotate freely. Described handlebar 3 is installed on the upper end of front fork 12, and turning handlebar 3 can control front fork 12 to rotate. One end of the steering arm 2 is welded on the inner yoke of the front fork 12, and the other end is connected with the tie rod 1 in a hinged manner to form a trapezoidal structure, so as to ensure that the two front wheels 13 rotate at different angles when turning. Meet the steering requirements of four-wheel vehicles. Described rear wheel 8 is installed on the rear end of rear suspension swing arm 9. Described rear suspension swing arm 9 front ends are fixed on vehicle frame 5 bottoms by rear suspension swing arm pin 11, and can swing up and down around suspension swing arm pin 11. The two ends of the spring shock absorber 10 are respectively connected to the vehicle frame 5 and the rear suspension swing arm 9 in a hinged manner, and the spring shock absorber 10 forms a triangular structure with the vehicle frame 5 and the rear suspension swing arm 9. The spring in the spring shock absorber 10 can be compressed when changing, so that the rear suspension swing arm 9 can swing up and down. the

In actual use, one or two people can ride on the vehicle seat 6 respectively, and the handlebar 3 is controlled to steer and ride. When the ground is uneven, the rear suspension swing arm 9 swings up or down under the action of the spring shock absorber 10 to ensure that the rear wheels 8 can land on the ground at any time. Carrying items can be placed on the rear shelf 7, or be converted into a seat for children to ride. Because the bicycle is on the ground with four wheels, the driving stability is better. the

Claims (4)

1. double quadricycle of riding side by side, it is characterized in that: two independently bicycle rack adopt the mode of being rigidly connected to connect, two trailing wheels link to each other with described vehicle frame by the swing arm that can swing up and down separately, and described swing arm links to each other by bearing pin with described vehicle frame.

2. a kind of double quadricycle of riding side by side as claimed in claim 1 is characterized in that: between swing arm and vehicle frame spring damper is housed.

3. a kind of double quadricycle of riding side by side as claimed in claim 1 is characterized in that: the front end of described two bicycle racks and front cross beam welding together, rear end and rear shelf weld together form shape of the mouth as one speaks framed structure.

4. such as each described a kind of double quadricycle of riding side by side of claim 1-3, it is characterized in that: the inwall of two front vehicle forks connects by tie rod linkage, described Ackerman steering mechanism comprises intermediate rod and spindle arm, described intermediate rod two ends connect spindle arm with articulated manner, and described spindle arm is fixed on the inwall of described front vehicle fork.

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