WO2016015647A1

WO2016015647A1 - Recumbent bicycle

Info

Publication number: WO2016015647A1
Application number: PCT/CN2015/085429
Authority: WO
Inventors: 丁振辉
Original assignee: 丁振辉
Priority date: 2014-07-31
Filing date: 2015-07-29
Publication date: 2016-02-04
Also published as: CN104139819A

Abstract

A recumbent bicycle comprising a front wheel portion (1), a handlebar/steering portion (2), a rear wheel (3), a drive portion (4), a seat portion (5), and a frame (6), characterized in that the handlebar/steering portion (2) comprises a stem (21), two universal joints and a drive shaft (24); the stem (21) is horizontally set back a certain distance from the front wheel portion (1); the two universal joints are arranged, respectively, at the bottom end of the stem (21) and at the top end of the front fork (11) of the front wheel portion (1), the two universal joints being transmissively connected by means of the drive shaft (24). The recumbent bicycle has a compact structure and is comfortable to ride.

Description

Lying bicycle

Technical field

The present invention relates to the field of bicycles, and more particularly to a reclining bicycle.

Background of the invention

As a green transportation vehicle, bicycle has been widely used in China. However, with the continuous improvement of the humanized design requirements of the society, the requirements for the compactness and safety of bicycles have attracted more and more attention.

FIG. 1 is a schematic view showing the structure of a bicycle provided by the prior art. As shown in FIG. 1, the handlebar (grip), the handlebar and the front fork of the bicycle of the prior art are integrally connected, and in the same vertical plane, when the front wheel is turned, the handlebar is directly passed through the front fork. Transfer the force to the front wheel. Thus, due to the pedaling angle limitation, the rider can only ride in an upright sitting position, standing or leaning forward position, and if the lying/semi-lying type is adopted, the rider's field of view is blocked.

While riding in an upright sitting position, standing or leaning forward, the seat will compress and rub the rider's perineum and ankles and other related parts. Long-term riding will also cause muscle tension and stiffness in the back, wrists, arms and neck. Sore. In addition, due to the high body weight of the person standing upright, standing or leaning forward, the distance between the joints of the human body and the body is high. When riding, the body must lean forward to control the direction. In the event of an accident, the head will first touch the ground.

In the prior art reclining bicycle, the handle and the front fork are also integrally connected. Since the human body takes a semi-lying posture while riding, and the distance between the person's weight and the distance is far, it is difficult for the person to control the steering of the handlebar through the arm, and only the steering of the handlebar can be controlled by the human leg; however, due to the human leg The length is greater than the arm. To avoid the body being too long, the footboard can only be located in front of the front wheel. Such a reclining bicycle is not only difficult to control the steering, but the footboard also affects the rider's riding line of sight, causing safety problems.

Summary of the invention

In view of this, the embodiment of the invention provides a reclining bicycle, which is compact in structure and comfortable in riding.

A reclining bicycle according to an embodiment of the present invention includes: a front wheel portion, a handle steering portion, a rear wheel, a driving portion, a seat portion, and a frame; wherein the handle turning portion includes a handlebar, two thousand a knuckle and a drive rod; the handle is horizontally moved back relative to the front wheel portion by a certain distance; the two universal joints are respectively The lower end of the stem is mounted on the upper end of the front fork and the front end of the front wheel portion, and the two universal joints are drivingly connected by the driving rod.

Wherein, the installation manner of the two universal joints is welding.

The frame includes: a front face tube and a rear face tube; the front end of the front fork portion is connected to the lower end of the front face tube; and the handle lower end is connected to the upper end of the rear face tube.

Wherein, the angle between the front face tube and the ground perpendicular is not more than 10°.

Wherein, the upper end of the front fork of the front wheel portion is detachably inserted into the lower end of the front face tube by a fork.

Wherein the lower end of the handle is detachably inserted into the upper end of the rear face tube.

Wherein, the inner angle between the seat portion and the backrest portion of the seat portion is greater than 90 degrees.

Wherein, the front end branch pipe of the seat cushion of the seat portion is horizontally detachably fixed to the frame.

Wherein, the front end branch pipe of the seat cushion of the seat portion can be moved back and forth in the horizontal direction.

Wherein, the seat bracket front end branch of the seat portion is located behind the central axis of the driving portion.

Wherein, the horizontal distance between the front end branch of the seat cushion of the seat portion and the central axis is not less than 15 cm.

Wherein, the vertical distance between the front end branch of the seat bracket of the seat portion and the ground plane is 40 cm to 70 cm.

Wherein, the diameter of the rear wheel is larger than the diameter of the front wheel of the front wheel portion.

Wherein the rear wheel has a diameter of 20, 22, 24, 26, 27 or 28 inches and the front wheel has a diameter of 14, 16, 18 or 20 inches.

Wherein, the frame is made of hollow pipe.

Wherein, the hollow pipe is made of steel, aluminum alloy, magnesium alloy or carbon fiber.

The reclining bicycle provided by the embodiment of the present invention separates the handle position from the front wheel position with respect to the bicycle in the prior art. Specifically, the handle position is moved backward by a certain distance with respect to the front wheel position, and at the same time The lower end and the upper end of the front fork are respectively provided with a universal joint and a control rod between the two universal joints, which can transmit the rotational power of the steering force to the front wheel, so that the rider can still comfortably operate while being in a semi-lying state. The handle also meets the requirements of compact structure.

BRIEF DESCRIPTION OF THE DRAWINGS

1a-1b are schematic views of a bicycle structure provided by the prior art.

FIG. 2 is a schematic structural view of a reclining bicycle according to an embodiment of the present invention.

FIG. 3 is a schematic structural view of a frame of a reclining bicycle according to an embodiment of the present invention.

Mode for carrying out the invention

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 2 is a schematic structural view of a reclining bicycle provided by the present invention. As shown in FIG. 2, the reclining bicycle includes a front wheel portion 1, a handle steering portion 2, a rear wheel 3, a driving portion 4, a seat portion 5, and a frame 6. Among them, the handle 21 of the handle steering portion 2 is horizontally moved backward by a certain distance with respect to the front wheel portion 1. Correspondingly, the face tube of the frame 6 is divided into a front face tube 61 and a rear face tube 62, and the front face tube 61 and the rear face tube 62 are connected by a cross bar. The front wheel portion 1 is connected (fixed or detachable) to the front face tube 61, and the stem 21 is connected to the rear face tube 62 (fixed or detachable).

In an embodiment of the invention, the angle between the front face tube 61 and the ground perpendicular is no more than 10°, and preferably, the face tube 61 is perpendicular to the ground.

Specifically, the front wheel portion 1 includes a front fork 11, a front wheel 12, and a fork. The center shaft of the front wheel 12 is mounted at the lower end of the front fork 11; the upper end of the front fork 11 is connected to the fork. Since the fork is detachably inserted into the front face tube 61 of the frame 6 (as shown in FIG. 3), the fork is not shown in FIG.

The handle steering portion 2 includes a handle 21, a universal joint 22, a universal joint 23, and a drive lever 24. The erecting member 21 is horizontally moved back by a certain distance with respect to the front wheel portion 1, and the universal joint 22 is attached to the lower end of the erecting member 21, and the universal joint 23 is attached to the upper end of the front fork 11 of the front wheel portion 1, and the two universal joints 22 Between the 23 and 23, the drive rod 24 is connected. Here, as shown in FIG. 3, the stem 21 is detachably inserted into the upper end of the rear face tube 62 of the frame 6.

Thus, when the rider operates the handle 21 to rotate, the lower end of the vertical 21 drives the universal joint 22 to rotate; the universal joint 22 drives the universal joint 23 to rotate by the drive rod 24; the universal joint 23 further drives the front fork 11 to rotate. Thereby, the steering force of the front wheel portion of the stem 21 is transmitted.

Those skilled in the art will appreciate that the mounting locations of the

universal joints

22 and 23 are not intended to limit the scope of the present invention. In an embodiment of the invention, the universal joint 23 can also be mounted at the upper end of the fork, as long as the control force of the handle steering portion can be transmitted to the front wheel through the drive rod to control the front wheel steering can. In an embodiment of the invention, the two

universal joints

22 and 23 are mounted in a welded manner.

The seat portion 5 includes a seat cushion portion 51, a backrest portion 52, and a cushion bracket 53. The inner angle between the seat portion 51 and the backrest portion 52 is greater than 90 degrees so that the rider can complete the riding action in a semi-recumbent position. The front end branch 54 of the cushion bracket 53 is horizontally detachably fixed to the frame 6. In an embodiment of the invention, the front end branch pipe 54 can also be moved back and forth in the horizontal direction, so that the horizontal distance of the seat portion 5 from the handle steering portion and the foot board can be controlled to meet the rider of different heights (leg length). Cycling requirements.

The driving portion 4 is located between the front wheel 12 and the rear wheel 3, and the driving portion 4 includes: a chain 41, a front sprocket 42, a rear sprocket 43, two foot plates 44 and a center shaft 45; the front sprocket 42 passes through the chain 41 The rear sprocket 43 is drivingly connected, the rear sprocket 43 is rotated to drive the rear wheel 3 to rotate, the middle shaft 45 passes through the center of the front sprocket 42, and the two foot plates 44 are respectively coupled to both ends of the center shaft 45.

In an embodiment of the invention, the diameter of the rear wheel 3 is greater than the diameter of the front wheel 12 of the front wheel portion 1. When the difference between the diameters of the rear wheel 3 and the front wheel 12 is large, the bicycle can be controlled to a suitable length when the rider lies back. When the gap between the rear wheel and the front wheel is reduced, the length of the bicycle needs to be increased to achieve reclining.

In an embodiment of the present invention, the frame 6 is made of hollow tubing, thereby reducing the weight of the vehicle body and making the reclining bicycle more lightweight to ride. In an embodiment, the hollow tubing may be made of steel, aluminum alloy, magnesium alloy or carbon fiber.

In an embodiment of the present invention, the front end branch pipe of the seat cushion bracket is located behind the center shaft, and the horizontal distance from the center axis is not less than 15 cm; the vertical distance between the front end branch pipe of the seat cushion bracket and the ground plane is 40 cm to 70 cm.

The rear wheel diameter or/and the front wheel diameter may be standard, such as 14 inches, 16 inches, 18 inches, 20 inches, 22 inches, 24 inches, 26 inches, 27 inches, 28 inches. In one embodiment of the invention, it may be that the rear wheel has a diameter of 20, 22, 24, 26, 27 or 28 inches and the front wheel has a diameter of 14, 16, 18 or 20 inches.

With the reclining bicycle provided by the present invention, since the handle is horizontally moved back relative to the front wheel portion by a certain distance, the steering portion of the handle is closer to the seat portion, thereby being closer to the center of gravity of the person; thus, even if the rider adopts the lying posture, it is freely Steering steering. Moreover, the pedal can also be located between the front wheel and the rear wheel during the structural design. The rider's riding line of sight is not disturbed by the foot board, the field of view is wider and there is no blind zone, and the road condition can be easily observed, and the safety is improved. .

By using the reclining bicycle provided by the embodiment of the present invention, even if riding for a long time, there is no occurrence of low back pain, neck pain, wrist pain, back pain, inflammation of the frictional genital area, and even blood circulation caused by riding a regular bicycle. Obstructed and other conditions, suitable for people of all ages. At the same time, the movement of the human body during cycling can fully drive the force, the efficiency of riding work is higher, the riding speed is faster, and the maximum speed can reach 40 kilometers or even higher.

The above-mentioned embodiments are only intended to illustrate the technical concept and the features of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, and the like made within the spirit and principles of the present invention should be included in the scope of the present invention. within.

Claims

A reclining bicycle includes: a front wheel portion, a handle steering portion, a rear wheel, a driving portion, a seat portion, and a frame; wherein the handle turning portion includes a stem, two universal joints, and a driving rod The handle is horizontally moved back relative to the front wheel portion by a certain distance; the two universal joints are respectively mounted on the lower end of the stem and the upper end of the front fork of the front wheel portion, the two The universal joints are connected by the drive rod.
The reclining bicycle according to claim 1, wherein the two universal joints are mounted by welding.
The reclining bicycle according to claim 1, wherein the frame comprises: a front face tube and a rear face tube; and an upper end of the front fork of the front wheel portion is connected to a lower end of the front face tube; The lower end is connected to the upper end of the rear face tube.
The reclining bicycle according to claim 3, wherein the front face tube and the ground perpendicular have an angle of not more than 10°.
The reclining bicycle according to claim 3 or 4, characterized in that the upper end of the front fork of the front wheel portion is detachably inserted into the lower end of the front face tube by a fork.
The reclining bicycle according to claim 3, wherein said lower end is detachably inserted into an upper end of said rear face tube.
The reclining bicycle according to claim 1, wherein an inner angle between the seat portion and the back portion of the seat portion is greater than 90 degrees.
The reclining bicycle according to claim 1 or 7, wherein a front end branch of the seat cushion of the seat portion is horizontally detachably fixed to the frame.
The reclining bicycle according to claim 1 or 7, wherein the front end branch of the seat cushion of the seat portion is movable back and forth in the horizontal direction.
The reclining bicycle according to claim 1, wherein the seat bracket front end branch of the seat portion is located rearward of a central axis of the driving portion.
The reclining bicycle according to claim 10, wherein the seat bracket front end branch of the seat portion has a horizontal distance from the center shaft of not less than 15 cm.
The reclining bicycle according to claim 1 or 7, wherein a vertical distance between the front end branch pipe of the seat portion of the seat portion and the ground plane is 40 cm to 70 cm.
The reclining bicycle according to claim 1, wherein a diameter of the rear wheel is larger than a front wheel diameter of the front wheel portion.
The reclining bicycle according to claim 1, wherein the rear wheel has a diameter of 20, 22, 24, 26, 27 or 28 inches and the front wheel has a diameter of 14, 16, 18 or 20 inches.
The reclining bicycle according to claim 1, wherein the frame is made of a hollow pipe.
The reclining bicycle according to claim 15, wherein the hollow tube is made of steel, aluminum alloy, magnesium alloy or carbon fiber.