TWI637878B - Bicycle continuous transmission - Google Patents

Abstract

The present invention relates to a bicycle continuous transmission including a drive shaft, a rotary shaft, a brake shaft and a brake device; the rotary shaft is fixed on the drive shaft, and the double-row helical gear is pivotally disposed on one side of the drive shaft near the lateral direction of the rotary shaft The brake shaft is fixed with a first alternating helical gear at one end and a brake device at the other end to control the speed of the brake shaft to rotate, thereby controlling the speed of the first alternating helical gear, the first alternating helical gear and the double helical helical gear The first helical gear is engaged with each other; the second and third alternating helical gears are respectively disposed at two ends of the rotary shaft, and the second and third alternating helical gears respectively mesh with the second helical gear of the double-row helical gear; the output helical gear It is arranged on the drive shaft, and is engaged with the second and third movable helical gears respectively, and the sprocket is fixed at the rear end of the output helical gear; when the loader, heavy object, just starting or going uphill, the friction of the brake device can be conveniently controlled. Force, easy to step on the pedal, drive the bicycle forward, to achieve the benefits of labor-saving, continuous shifting.

Description

Bicycle continuous transmission

The present invention relates to a bicycle continuous transmission, which specifically refers to a bicycle continuous transmission that utilizes control of braking friction to achieve easy and labor-saving riding and continuous shifting.

However, according to the BBC Chinese website, a 12-year European study of more than 300,000 people found that the number of people who died from exercise was twice as likely to die from obesity. The researchers found that "regardless of normal weight, overweight or obesity" Among the people, those who lack exercise are prone to die early. At the same time, the biggest cause of death from lack of exercise is cardiovascular disease, and riding a bicycle is a way to compress blood flow and accelerate blood circulation by relaxing leg movements. Strengthening microvascular tissue and aerobic exercise that makes blood vessels younger, not only can improve lung capacity, strengthen the heart, but also save a lot of fuel costs, and it is environmentally friendly, so that more and more people use bicycles as a means of transportation. Tools, however, traditional bicycles, whether or not they can automatically shift speed, when the knight steps on the pedal just started, because the tire is in static contact with the floor, the friction is greater, the knight must use very much effort to drive the bicycle forward. At the time, if the rear carries people or heavy objects, the force of trampling is relatively more laborious, especially when encountering an uphill slope. Gravity and resistance is increased, many Knight shift riding bicycle pedal is often due to heavy uphill while pedaling be a shift in the weight, that often The occurrence of broken chains, resulting in bicycle damage and the inability to continue riding, must be carried by the bicycle uphill, not only laborious and time-consuming; these lacks, not only the long-term shortcomings that traditional bicycle operators can not break through, but also cause each The bicycle rider has long been inconvenient and troubled; in view of this, how to overcome the above disadvantages is the technical problem and technical effect that the inventors want to solve.

The present inventors have in view of the above-mentioned conventional bicycles still have many problems in terms of use and efficacy, and the inventors have started research and active research and development, and have created a breakthrough in the existing technical functions. The professional experience and experience of this industry, thus inventing the invention of this case.

The main object of the present invention is to provide a bicycle continuous transmission, which utilizes the frictional force of the brake device to control the rotation speed of the first cross bevel gear to be slow, so that the speed of the first cross bevel gear to drive the double row helical gear is relatively changed. Slowly, at this time, after the interaction, the second interactive helical gear that meshes with the second helical gear of the double-row helical gear and the third interactive helical gear rotate faster, and the speed of the output helical gear is relatively reversed. Faster, according to the speed of the sprocket fixed at the rear end of the output helical gear, so that when the bicycle is loaded behind the person, the heavy object just started or ride on the slope, the Cavaliers can easily step on the pedal Easy to drive the bicycle forward, not only can save the power of stepping, improve the endurance of the climbing, and the speed is simple and fast, more visible to the situation at the time of riding, convenient and effective control of the friction of the brake device, to achieve the best benefits of continuous shifting Improve the practical convenience and superiority of bicycles and enhance the utilization value of the industry.

The detailed description of the drawings and the preferred embodiments is set forth in the accompanying drawings.

(1) ‧‧‧Bicycle continuous transmission

(10)‧‧‧ drive shaft

(101) ‧‧‧1st Fixture

(11) ‧‧‧1st outer casing

(12) ‧‧‧2nd outer casing

(20)‧‧‧Rotary axis

(201) ‧‧‧2nd Fixture

(22)‧‧‧2nd interactive helical gear

(23) ‧‧‧3rd interactive helical gear

(30)‧‧‧Brake shaft

(31) ‧‧‧1st interactive helical gear

(50)‧‧‧ brakes

(51)‧‧‧1st brake order

(52) ‧‧‧2nd brake to order

(53)‧‧‧ brake hub

(530) ‧ ‧ set of holes

(55)‧‧‧ brake line

(60)‧‧‧Sprocket

(70)‧‧‧Double-row helical gears

(71)‧‧‧1st bevel gear

(72)‧‧‧2nd bevel gear

(80)‧‧‧Power output helical gear

(90)‧‧‧ pedal

(91)‧‧‧1st pedal shaft

(92)‧‧‧2nd pedal shaft

Figure 1 is a schematic view of a preferred embodiment of the invention.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

In order to provide a further understanding of the structure, features and functions of the present invention, the preferred embodiments are illustrated in the accompanying drawings.

Referring to Figures 1 and 2, the bicycle continuous transmission (1) of the present invention mainly comprises a drive shaft (10), a rotary shaft (20), a brake shaft (30) and a brake device (50); A first fastening portion (101) is provided on the shaft (10), and the rotating shaft (20) is provided with a corresponding second fastening portion (201), and the first fastening portion (101) and the first portion 2 the clamping portion (201) is engaged and fixed, and the rotating shaft (20) is fixed on the driving shaft (10) and disposed perpendicular to the driving shaft (10); wherein the driving shaft (10) is A double row helical gear (70) is pivotally disposed on one side of the lateral direction of the rotary shaft (20), and the double row helical gear (70) has a first helical gear (71) and a second helical gear (72) And one end of the drive shaft (10) and the double-row helical gear (70) is fixed to one end of a first pedal shaft (91); the first end of the brake shaft (30) is fixed with a first interaction The helical gear (31), the other end of the brake shaft (30) is provided with a brake device (50), the brake device (50) further comprises a brake wire (55) and a brake hub centered with the sleeve hole (530) (53); among them, the brake The brake hub (53) of the vehicle device (50) is sleeved and fixed to one end of the brake shaft (30) opposite to the first alternating helical gear (31) by a sleeve hole (530), and the brake hub (53) The first brake urging piece (51) and the second brake urging piece (52) are respectively disposed on the side; the two ends of the brake wire (55) are respectively fixed to the first brake urging piece (51) and the second The brake is applied to the blade (52); by controlling the tension and relaxation of the brake wire (55), the first brake to cause the blade (51) and the second brake to cause the blade (52) to clamp the brake hub inwardly (53) or relax the brake hub (53), that is, control the friction of the brake device (50) against the brake shaft (30) to control the speed of rotation of the brake shaft (30), thereby controlling the brake shaft (30) 1 The speed at which the helical gear (31) rotates, therefore, the speed at which the first helical bevel gear (31) rotates is controlled by the brake device (50), and the first cross helical gear (31) is double-row oblique The first bevel gear (71) of the gear (70) is correspondingly engaged; a second cross bevel gear (22) and a third cross bevel gear (23) are respectively pivoted at two ends of the rotary shaft (20). The second alternating helical gear (22) and the third alternating helical gear (23) are respectively double-row helical gears The second bevel gear (72) of (70) corresponds to the phase engagement; the bicycle continuous transmission (1) of the present invention further comprises a power output helical gear (80) and a sprocket (60), the output helical gear (80) The second cross-helical gear is pivotally disposed on one end of the double-row helical gear (70) opposite to the double-row helical gear (70) and adjacent to the other side of the rotary shaft (20), and is disposed on the rotary shaft (20) (22) and the third cross bevel gear (23) respectively engage with the output helical gear (80), and the sprocket (60) is sleeved on the drive shaft (10) opposite to the first pedal shaft (91) One end is fixed to the rear end of the output helical gear (80); the end of the drive shaft (10) extending out of the sprocket (60) is fixed to the second step One end of the plate shaft (92), the second pedal shaft (92) is pivoted with a pedal (90) opposite to one end of the drive shaft (10); when the bicycle is loaded with a person, a heavy object, just getting started or riding On the uphill, the knight steps on the pedal (90), but the pedal (90) is too heavy to drive the sprocket (60) to rotate. At this time, the brake device (50) is in a relaxed state, so the double-row helical gear (70) The first cross bevel gear (31) will always rotate. At this time, the knight can control the friction of the brake device (50), and the brake wire (55) of the brake device (50) is tightened to allow the brake hub (53). The first brake (51) and the second brake (52) on both sides sandwich the brake hub (53) to slow the rotation of the brake shaft (30), and the first interaction is controlled. When the speed of the helical gear (31) is slow or does not rotate, the speed of the rotation of the double-row helical gear (70) by the first cross-helical gear (31) can be slowed down, and at this time, the interaction is made. The second helical helical gear (70) of the helical gear (70) is engaged with the second alternating helical gear (22) and the third alternating helical gear (23) to rotate faster, thereby driving the output helical gear (80) to rotate. The speed is also relatively fast, according to The speed of the sprocket (60) fixed to the rear end of the output helical gear (80) allows the rider to easily step on the pedal (90), so that the first pedal shaft (91) and the second pedal shaft (92) When the drive shaft (10) is rotated and the rotary shaft (20) is rotated synchronously, the bicycle is easily driven forward, the force of pedaling is saved, the endurance of the climbing is enhanced, and the shifting is simple and fast, and the situation at the time of riding is convenient. Effectively controlling the friction of the brake device (50) can not only achieve the best benefit of continuous shifting, but also make the rider easy and labor-saving, improve the fun of riding a bicycle, and improve the practical convenience and superiority of the bicycle; The transmission (1) further includes a first outer casing (11) and a second outer casing (12), the first outer casing The shell (11) and the second outer casing (12) are integrally wrapped around the drive shaft (10), the rotary shaft (20), the brake shaft (30), and the brake device (50), and the periphery of each gear is used to make the bicycle The continuous transmission (1) is more holistic and easy to install.

The above is only the preferred embodiments of the present invention and the preferred embodiments of the present invention are not intended to limit the scope of the present invention. Any other changes and modifications made in accordance with the same spirit and scope of the present invention. Or the arrangement of equality is covered by the technical scope and patent scope of the invention.

The invention is based on the above characteristics and is a rather outstanding and excellent design; it is not found in the publication or public use, and is suitable for the application requirements of the invention patent, and is filed according to law.

Claims (9)

A bicycle continuous transmission mainly comprises a drive shaft, a rotary shaft, a brake shaft and a brake device; the rotary shaft is fixed on the drive shaft; wherein the drive shaft is adjacent to one side of the rotary shaft and is pivoted with a double a helical bevel gear having a first bevel gear and a second bevel gear; one end of the drive shaft and the double-row helical gear is fixed to one end of the first pedal shaft; One end of the brake shaft is fixed with a first cross-helical gear, and the other end is provided with a brake device. By controlling the frictional force of the brake device on the brake shaft, the speed of the brake shaft is controlled to control the speed of the first interactive helical gear; The first cross bevel gear is coupled to the first bevel gear of the double row helical gear; the second cross bevel gear and the third cross bevel gear are respectively pivoted at two ends of the rotary shaft, and the second interaction The helical gear and the third alternating helical gear are respectively engaged with the second helical gear of the double-row helical gear; wherein the bicycle continuous transmission further comprises a power output helical gear and a sprocket; the output helical gear is pivoted The shaft is opposite to one end of the double-row helical gear, and is adjacent to the other side of the rotary shaft, so that the second alternating helical gear and the third alternating helical gear pivoted on the rotary shaft respectively engage with the output helical gear; The sprocket is sleeved on one end of the drive shaft opposite to the first pedal shaft and is fixed The end of the output shaft of the output sprocket is fixed to one end of the second pedal shaft. A bicycle continuous transmission mainly comprises a drive shaft, a rotary shaft, a brake shaft and a brake device; the rotary shaft is fixed on the drive shaft; wherein the drive shaft is adjacent to one side of the rotary shaft and is pivoted with a double a helical bevel gear having a first bevel gear and a second bevel gear; one end of the drive shaft and the double-row helical gear is fixed to one end of the first pedal shaft; One end of the brake shaft is fixed with a first cross-helical gear, and the other end is provided with a brake device. By controlling the frictional force of the brake device on the brake shaft, the speed of the brake shaft is controlled to control the speed of the first interactive helical gear; The first cross bevel gear is coupled to the first bevel gear of the double row helical gear; the second cross bevel gear and the third cross bevel gear are respectively pivoted at two ends of the rotary shaft, and the second interaction The helical gear and the third alternating helical gear are respectively engaged with the second helical gear of the double-row helical gear; wherein the bicycle continuous transmission further comprises a power output helical gear and a sprocket; the output helical gear is pivoted The shaft is opposite to one end of the double-row helical gear, and is adjacent to the other side of the rotary shaft, so that the second alternating helical gear and the third alternating helical gear pivoted on the rotary shaft respectively engage with the output helical gear; The sprocket is sleeved on one end of the drive shaft opposite to the first pedal shaft and is fixed The end of the drive shaft extending from the sprocket is fixed to one end of the second pedal shaft; the frictional force of the brake device is controlled to slow the rotation of the brake shaft, and the relative control The speed of the first interactive helical gear rotates slowly, so that the speed of the first cross helical gear to drive the double-row helical gear is also slowed, and the second interactive helical gear that meshes with the double-sided helical gear second helical gear is The third interactive helical gear rotates faster, and the speed of the output helical gear rotates relatively faster. According to the speed of the sprocket fixed at the rear end of the output helical gear, the labor saving and continuous shifting are achieved. Good efficiency. The bicycle continuous transmission according to claim 1 or 2, wherein the bicycle continuous transmission further includes a first outer casing and a second outer casing; the first outer casing and the second outer casing are integrally wrapped around the drive shaft and rotated The shaft, brake shaft and brakes, and the periphery of each gear, make the bicycle continuous transmission a one-piece. The bicycle continuous transmission according to claim 1 or 2, wherein the drive shaft is provided with a first fastening portion, and the rotary shaft is provided with a corresponding second fastening portion, by the first fastening portion The second locking portion is engaged with the second fastening portion to fix the rotary shaft to the drive shaft. The bicycle continuous transmission of claim 1 or 2, wherein the brake device comprises a brake wire and a brake hub centered with a sleeve hole; the brake hub is fixed to the brake shaft by a sleeve hole thereof One end of the first alternating helical gear; a first brake is arranged on each side of the brake hub to make a piece and a second brake The two ends of the brake wire are respectively fixed on the first brake urging piece and the second brake lining; and by controlling the tightness of the brake wire, the speed of the brake shaft is controlled to control the brake shaft. The speed at which the first interactive helical gear rotates. The bicycle continuous transmission according to claim 1 or 2, wherein the second cross bevel gear and the third cross bevel gear are respectively pivoted at both ends of the longitudinal direction of the rotary shaft. The bicycle continuous transmission according to claim 1 or 2, wherein the double row helical gear that is sleeved on the drive shaft is disposed on one side of the lateral direction of the rotary shaft. The bicycle-continuous transmission of claim 1 or 2, wherein the output helical gear pivoted to one end of the drive shaft opposite to the double-row helical gear is disposed on the other side of the lateral direction of the rotary shaft. The bicycle continuous transmission according to claim 1 or 2, wherein the rotary shaft system fixed to the drive shaft is perpendicular to the drive shaft.