CN107585242A - The bicycle turned to by castor - Google Patents

Abstract

The invention discloses a bicycle steered by casters, which comprises a front wheel mounted on the front end of the frame through a steering mechanism and a rear wheel mounted on the rear end of the frame through a rear fork, the vehicle seat is arranged on the frame, and the steering mechanism includes Steering handle, transmission shaft and front fork, the lower end of the steering handle and the upper end of the transmission shaft are connected in the steering sleeve at the front end of the frame through a universal rotating joint, and the front fork is arranged behind the front end of the frame Below, the lower end of the transmission shaft is connected to the front end of the front fork, and the front wheel is arranged in the left and right fork bodies at the rear end of the front fork; the transmission shaft, the front fork and the front wheel constitute a caster mechanism. The invention makes good use of the natural stability and orientation of the caster mechanism, and has better safety performance than the traditional bicycle mechanism.

Description

Bicycles that steer by casters

technical field

The invention relates to a road running mechanism, in particular to a bicycle steered by casters.

Background technique

Bicycle has the characteristics of simple structure, small size, fast and flexible, and is a widely used means of transportation.

Bicycles are a common riding tool for people. Compared with four-wheeled vehicles, bicycles with a small body can shuttle through the streets and alleys more freely. This advantage makes them have a wide range of application prospects in security patrols, forest operations, and fitness. .

Analysis of the characteristics of a large number of bicycles has shown that the rear offset of the wheel contact point has an important influence on the natural stability and direction of motion of the bicycle. However, the current bicycle handlebar usually adopts the installation method of the handlebar leaning forward, and the rear offset of the wheel contact point is limited, so the natural stability and directionality of the bicycle body are insufficient.

The caster mechanism is a widely used auxiliary component of the road running mechanism. It can be applied to trolleys, mobile scaffolds, workshop trucks and other transportation fields, and it is also widely used in other fields.

A large number of practices have proved that the caster mechanism can provide a large range of wheel contact point offset, and the wheeled traveling mechanism equipped with casters usually has good orientation.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a bicycle steered by casters which improves the natural stability and orientation of the vehicle body.

A bicycle steered by casters that can solve the above-mentioned technical problems, the technical proposal includes a front wheel mounted on the front end of the frame through a steering mechanism and a rear wheel mounted on the rear end of the frame through a rear fork, and the seat is arranged on the frame. The steering mechanism includes a steering handle, a transmission shaft and a front fork, the lower end of the steering handle and the upper end of the transmission shaft are connected in the steering sleeve at the front end of the vehicle frame through a universal rotating joint, and the front fork is set The lower end of the transmission shaft is connected to the front end of the front fork, and the front wheel is arranged in the left and right fork body at the rear end of the front fork; the transmission shaft, front fork and front wheel constitute a caster mechanism.

The optimal design solution is that the steering handle is arranged inclined backward, the transmission shaft is arranged vertically, and the front fork is arranged horizontally.

Further, the steering handle is installed on the upper part of the steering sleeve through an oblique handle bearing, and the transmission shaft is installed on the lower part of the steering sleeve through a horizontal transmission bearing.

In order to increase the rigidity of the caster mechanism, a reinforcing plate is provided between the transmission shaft and the front fork.

The structure under the electric vehicle mode is that the rear wheels adopt hub-type electric wheels.

Beneficial effects of the present invention:

1. In the structure of the bicycle steered by casters in the present invention, the caster mechanism is used as the steering wheel of the bicycle, which can provide a larger rear offset distance of the wheel ground contact point, so that the bicycle has better natural stability and orientation, and the bicycle has been improved. safety performance.

2. In the structure of the present invention, the steering handlebar is connected to the caster mechanism through the universal rotating joint, and people can change the walking direction of the caster mechanism according to actual road conditions, which has better steering flexibility.

Description of drawings

Fig. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a connection structure diagram of the steering handle and the transmission shaft in Fig. 1 .

Drawing number identification: 1. Frame; 2. Front wheel; 3. Rear fork; 4. Rear wheel; 5. Steering handle; 6. Transmission shaft; 7. Front fork; 8. Universal rotating joint; 9 , Reinforcement plate; 10, Steering sleeve; 11, Handle bearing; 12, Transmission bearing; 13, Car seat; 14, Bracket.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

The structure of the bicycle steered by the casters of the present invention includes a vehicle frame 1, a front wheel 2 installed by a steering mechanism, a rear wheel 4 installed by a rear fork 3 and a vehicle seat 13 installed by a bracket 14.

The vehicle frame 1 adopts front and rear longitudinal frames, the front end of the vehicle frame 1 is provided with a steering sleeve 10, and the support is arranged at the rear end of the vehicle frame 1 inclined backward, as shown in FIG. 1 .

The steering mechanism includes a rearwardly inclined steering handle 5, a vertical transmission shaft 6 and a horizontal front fork 7. The bearing 11 is installed in place, and the upper part of the transmission shaft 6 is arranged on the lower part of the steering sleeve 10 and installed in place through the horizontal transmission bearing 12. In the middle part of the steering sleeve 10, the lower end of the steering handle 5 and the upper end of the transmission shaft 6 pass through The universal rotary joint 8 is connected (when turning the steering handlebar 5, under the transmission action of the universal rotary joint 8, the rotating speed of the steering handlebar 5 and the transmission shaft 6 are equal and in the same direction), and the front fork 7 The front end is connected to the lower end of the transmission shaft 6, and the connecting portion of the two is provided with a reinforcing plate 9, and the front wheel 2 is installed in the left and right fork bodies at the rear end of the front fork 7, as shown in Figure 1 and Figure 2 .

In the above structure, the transmission shaft 6, the front fork 7 and the front wheel 2 form the casters of the bicycle.

The rear fork 3 is tilted forward, the front end of the rear fork 3 is connected to the bracket 14 at the rear end of the vehicle frame 1, the rear wheel 4 is installed in the left and right fork bodies at the rear end of the rear fork 3, and the rear wheel 4 adopts a hub Type electric wheel, as shown in Figure 1.

Claims (4)

1. the bicycle turned to by castor, including the front vehicle wheel (2) of vehicle frame (1) front end is installed on by steering mechanism and passed through Rear vehicle fork (3) is installed on the rear wheel (4) of vehicle frame (1) rear end, and vehicle seat (13) is arranged on vehicle frame (1), it is characterised in that：Described turn Include turning to hand handle (5), power transmission shaft (6) and front vehicle fork (7), the lower end for turning to hand handle (5) and power transmission shaft (6) to mechanism In being connected in the turning sleeve (10) of vehicle frame (1) front end by universal rotational joint (8), the front vehicle fork (7) is arranged at car for upper end The back lower place of frame (1) front end, lower end connection front vehicle fork (7) front end of the power transmission shaft (6), the front vehicle wheel (2) are located at front truck The left and right fork for pitching (7) rear end is internal；The power transmission shaft (6), front vehicle fork (7) and front vehicle wheel (2) form castor mechanism.

2. the bicycle according to claim 1 turned to by castor, it is characterised in that：The steering hand handle (5) is backward It is obliquely installed, the power transmission shaft (6) is vertically arranged, and the front vehicle fork (7) is horizontally disposed.

3. the bicycle according to claim 2 turned to by castor, it is characterised in that：The steering hand handle (5) passes through Tilting hand handle bearing (11) is installed on the top of turning sleeve (10), the drive bearing (12) that the power transmission shaft (6) passes through level It is installed on the bottom of turning sleeve (10).

4. the bicycle turned to by castor according to any one in claims 1 to 3, it is characterised in that：The biography Reinforcing plate (9) is provided between moving axis (6) and front vehicle fork (7).