TWM554081U - Bicycle front-wheel drive device - Google Patents

Description

Bicycle front wheel drive

The present invention relates to a bicycle front wheel drive device, and more particularly to a bicycle front wheel drive device which can directly drive a front wheel hub to rotate the bicycle to drive the bicycle forward, and has a simple structure and is relatively light and labor-saving.

Since the introduction of the bicycle, it has been driven by the front wheel steering and rear wheel drive. The rider uses the legs to alternately step on the pedals on both sides of the car body, and the gear wheel is rotated by the crank to make it pass through the chain to rotate the gears on the rear wheel axle to drive the bicycle forward.

However, it is limited by the transmission between the gear wheel and the gear on the rear wheel axle. Therefore, it is not allowed to be lost by the kinetic energy of the pedals on the pedals. In addition, after the ride, the chain is easy to slack. The cause of de-chaining and breaking occurs, which increases the inconvenience of maintenance. Because the rider's legs need to follow the crank to move in a circular motion, the space distance between the front and the rear is large, so that the front and rear wheels are so large. There is a certain track distance between them, which indirectly results in a longer frame and a higher body, which limits the type of bicycle and cannot be generally applied to different purposes (such as reclining recreational vehicles, baby carriages).

To this end, we have seen a number of bicycles that have been driven by front-wheel drive, such as: Bulletin No. 566391 "Bike Front Wheel Transmission Structure Improvement", No. M285524 "Bicycle Front Wheel Drive Unit", No. M434023 "Bicycle Front Wheel Transmission" The device is the same as the previous case.

However, in the bicycle front wheel drive (transmission) device disclosed in the previous case, the combination components between the crank (rocker) and the front wheel are complicated, and cannot be avoided by indirect transmission methods such as gears and chains. Therefore, not only the difficulty of assembly is high, but also the riding time is quite laborious; especially when there is a use of both hands to pull down the steering rod or turn the rocker to drive the front wheel to rotate as a requester, but completely ignore this one The control method is very easy to cause the yaw of the direction of travel, and even the dangerous situation of dumping occurs, so there are obvious areas for improvement.

The present invention provides a bicycle front wheel drive device that uses a crank to directly drive the front wheel hub to drive the bicycle forward, and has a simple structure and is relatively light and labor-saving.

Another object of the present invention is to provide a bicycle front wheel drive that can be adapted for use in reclining recreational vehicles and strollers.

The creation system comprises: a front wheel hub, two front fork seats, a ratchet wheel, a mandrel and two cranks, the inside of the front wheel hub forms a through hole, and two spoke fixing plates are fixed on the periphery, and the two spokes are fixed Each of the outer sides of the disc is extended with a set of joints, wherein a threaded section is provided at an end edge of the one side sleeve portion, and the two front fork seats are respectively disposed at an outer edge of a circular ring seat and a plug pipe is obliquely extended. The circular ring seat is sleeved on the sleeve portion of the front wheel hub, and a bearing is disposed between the sleeves for coaxially forming with the front wheel hub, and does not rotate with the front wheel hub. The insertion tube is used for assembling the bicycle front fork, the rim of the ratchet is provided with ratchet teeth, and the inner surface of the rim is sleeved with a one-way bearing, and the one-way bearing is screwed to the side of the front wheel hub a threaded section of the portion, the mandrel is slightly longer than the front wheel hub, and passes through a through hole in the interior of the front wheel hub, and one end of the two cranks is pivoted with a pedal, and the other end is screwed to the mandrel. Then, a lever is fixed on the inner side of the crank end of the ratchet end, and the two ends of the lever are respectively bent inwardly to extend an extension section. An end edge of a section of the fork are located, The two forks are adapted to be engaged with the outer sides of the ratchet wheel rims to form a linkage, thereby forming a circular motion by using the crank to directly drive the front wheel hub and the spindle to drive the bicycle to advance, and may have a configuration It's simple, and it's light and effortless when riding. It can also be matched with the smaller outer diameter rear wheel design to suit the bicycle front wheel drive used in reclining recreational vehicles or strollers.

1‧‧‧Front wheel hub

11‧‧‧through hole

12‧‧‧ spoke fixed plate

13‧‧‧ spoke fixed plate

14‧‧‧ Sockets

15‧‧‧ Sockets

16‧‧‧Threaded section

17‧‧‧ bearing

18‧‧‧ bearing

2‧‧‧Front fork

21‧‧‧Plug

211‧‧‧Assembled holes

22‧‧‧ Bearing

3‧‧‧Front fork

31‧‧‧Plug

311‧‧‧Assembly holes

32‧‧‧ Bearing

4‧‧‧ratchet

41‧‧‧ ratchet

42‧‧‧ one-way bearing

421‧‧‧ internal thread

5‧‧‧ mandrel

51‧‧‧ external thread

52‧‧‧ external thread

6‧‧‧ crank

61‧‧‧ pedal

62‧‧‧Assembled holes

63‧‧‧ nuts

64‧‧ ‧bar

641‧‧‧ fork

642‧‧‧ fork

7‧‧‧ crank

71‧‧‧ pedal

72‧‧‧Assembled holes

73‧‧‧ nuts

8‧‧‧ Front fork

81‧‧‧fork

811‧‧‧Assembly holes

82‧‧‧ fork tube

821‧‧‧Assembly holes

83‧‧‧ bolt

84‧‧‧ bolt

The first picture is a three-dimensional exploded view of the creation.

The second figure is a cross-sectional view of the overall combined construction of the present creation.

The third picture is a schematic diagram of the assembly between the creation and the front wheel and front fork of the bicycle.

The fourth picture is a partial enlarged view of the ratchet and the lever between the creation.

The fifth picture is a reference diagram of the implementation state of the present application for the reclining recreational vehicle.

The design of the whole structure for the purpose of creation is further elaborated. The details are as follows: Please refer to the first, second and third pictures at the same time. The creation includes: a front wheel hub (1) and two front forks. The seat (2) (3), a ratchet wheel (4), a mandrel (5) and two cranks (6) (7), the front wheel hub (1) is a tubular body of appropriate length, the inside of which is formed a through hole (11) and two spoke fixing discs (12) (13) at the periphery thereof for the spokes of the front wheel and the outer sides of the spoke fixing discs (12) (13) a set of joints (14) (15), and a threaded section (16) is disposed at an end edge of the one side socket portion (14), and is separately sleeved in the two end holes of the through hole (11) A bearing (17) (18).

The two front fork seats (2) and (3) are formed by a socket tube (21) (31) extending obliquely from the outer edge of a circular ring seat, and the circular ring seat is sleeved in the ring mouth. Bearings (22) (32) can be respectively inserted into the sleeve portions (14) (15) at both ends of the front wheel hub (1), and the two front fork seats (2) (3) are respectively installed in two Outside the spoke fixing plate (12) (13) So that it is arranged coaxially with the front wheel hub (1) and does not rotate with the front wheel hub (1); then the outer diameter of the two plug pipes (21) (31) is aligned with the bicycle front fork (8) ) The diameter of the two fork tubes (81) (82) is set (as shown in the third figure), and the two plug tubes (21) (31) can be put into the two fork tubes (81) (82). There are several assembly holes (211) (311) (811) (821) corresponding to the inner wall of the pipe, and the two front forks can be rotated by bolts (83) (84). (3) Threading with the front fork (8), so that the front wheel is mounted on the bicycle frame.

The rim of the ratchet wheel (4) is surrounded by a plurality of ratchet teeth (41), and a one-way bearing (42) is disposed on the inner surface of the rim (the one-way bearing is a conventional one, and will not be described), and The inner ring is provided with an internal thread (421) so as to be screwed into the outer end of the sleeve portion (15) of the threaded section (16) of the front wheel hub (1), and screwed to the front wheel hub (1) ), and the front wheel hub (1) can be rotated in one direction in the forward direction.

The mandrel (5) is slightly longer than the length of the front wheel hub (1) for passing through the through hole (11) inside the front hub (1) and the bearing (17) (18) in the opening thereof, and The two ends of the front wheel hub (1) are pierced for flexible rotation, and external threads (51) (52) are provided on the ends of the mandrel (5).

The two cranks (6) and (7) are arranged in the left and right opposite directions, and a pedal (61) (71) is pivoted at one end thereof, and a fixed end is formed at the other end, and the center of the fixed end is integrated through an assembly. Holes (62) (72) are respectively inserted into the piercing ends of the ends of the mandrel (5), and are respectively screwed in by a male nut (51) (52) with a nut (63) (73). The two cranks (6) (7) are screwed to both ends of the mandrel (5), and a [shaped shift lever (64) is fixed to the inside of the crank (6) of the ratchet (4) end. The lever (64) is formed by bending each end of a straight section to form an extension section (please refer to the fourth figure), and the half of the straight section is fixed to the crank (6) The inner side surface has a fork (641) (642) at an end edge of the extended end portions, and the two forks (641) (642) are adapted to be engaged with the ratchet wheel (4) in a straight line corresponding to the two sides. The outer side of the tooth edge of the ratchet (41) makes it possible to connect Move, you can step on the two pedals (61) (71) with the human body's feet, so that the two cranks (6) (7) move in a circular motion to drive the spindle (5) to rotate, while the crank (6) inside the lever (64) The ratchet wheel (4) can be directly rotated, and the front wheel hub (1) and the front wheel can be rotated accordingly, thereby driving the bicycle forward.

This creation can be fixed by a lever (64) on the inner side of the crank (6), and the fork (641) (642) at the end of the extending end of the lever (64) is suitable for engaging the ratchet. (4) The straight line on the rim corresponds to the outer side of the tooth edges of the two ratchet teeth (41), so as to be surely interlocked therebetween, and the complicated transmission components such as chains and gears can be completely discarded, so that it is not only simple in construction, It is more convenient for assembly; when riding, you can step on the two pedals (61) (71) with your feet to make the two cranks (6) (7) move in a circular motion to directly transfer the ratchet with the lever (64). (4) Rotating, driving the front wheel hub (1) and the front wheel to rotate, thereby driving the bicycle forward, thereby effectively reducing the kinetic energy loss of the pedaling pedal (61) (71), achieving a light and labor-saving creative effect.

Please refer to the fifth figure. It can be seen that the front wheel of this creation can be combined with a rear wheel with a significantly smaller diameter to shorten the frame length and the height of the car, effectively reducing the weight of the car, and improving the ride. The stability and safety of the time are suitable for the use of reclining recreational vehicles and strollers.

The above description is based on the specific description of the embodiments shown in the drawings. Therefore, those who have the same creative appeals, such as simple modifications, changes, or similar items, are the same as the case. The scope of protection.

In summary, this creation has obvious industrial use value, and its overall structural design to achieve the purpose of creation, has not been publicly seen in the publication and use, since it can be easily completed according to the prior art, it should have been met. For the application requirements of the new patent, please apply for the patent right.

1‧‧‧Front wheel hub

11‧‧‧through hole

12‧‧‧ spoke fixed plate

13‧‧‧ spoke fixed plate

14‧‧‧ Sockets

15‧‧‧ Sockets

16‧‧‧Threaded section

17‧‧‧ bearing

18‧‧‧ bearing

2‧‧‧Front fork

21‧‧‧Plug

211‧‧‧Assembled holes

22‧‧‧ Bearing

3‧‧‧Front fork

31‧‧‧Plug

311‧‧‧Assembly holes

32‧‧‧ Bearing

4‧‧‧ratchet

41‧‧‧ ratchet

42‧‧‧ one-way bearing

421‧‧‧ internal thread

5‧‧‧ mandrel

51‧‧‧ external thread

52‧‧‧ external thread

6‧‧‧ crank

61‧‧‧ pedal

62‧‧‧Assembled holes

63‧‧‧ nuts

64‧‧ ‧bar

641‧‧‧ fork

642‧‧‧ fork

7‧‧‧ crank

71‧‧‧ pedal

72‧‧‧Assembled holes

73‧‧‧ nuts

Claims (4)

The bicycle front wheel drive device comprises: a front wheel hub, wherein a through hole is formed therein, and two spoke fixing discs are arranged on the periphery, and a pair of joints are respectively extended on the outer sides of the two spoke fixing discs, wherein one side sleeve portion a threaded section is provided at the end edge; the two front fork seats are formed by a plug pipe extending obliquely from the outer edge of a circular ring seat, and a bearing is arranged in the ring mouth of the circular ring seat. And a sleeve portion respectively sleeved on the two sides of the front wheel hub; a ratchet wheel having a rim on the rim and screwed to the threaded portion at the edge of the sleeve portion of the front wheel hub; a mandrel, The length of the front wheel hub is slightly longer than that of the front wheel hub, and is passed through the through hole of the front wheel hub, and is pierced by the two ends of the front wheel hub; the two cranks are respectively provided with a pedal at one end and the other ends are screwed together. At the two ends of the mandrel, a lever is fixed on the inner side of the crank end of the ratchet end, and the lever is formed by bending an extension section inwardly at both ends of a straight section, and at the end of the extension section A fork is formed at the edge, and the two forks are adapted to be engaged with the ratchet rim in a straight line corresponding to the outer edges of the two ratchet teeth, To even move. The bicycle front wheel drive device according to claim 1, wherein a bearing is disposed in each of the two ends of the inner through hole of the front wheel hub, and the mandrel is threaded through the bearing so that each of them has a flexible rotation. . The bicycle front wheel drive device according to the first aspect of the invention, wherein the outer diameters of the insertion pipes of the two front fork seats are opposite to the pipe diameters of the two fork pipes of the bicycle front fork, and correspondingly arranged on the pipe wall therebetween There are assembly holes, and a screwing group can be applied therebetween. The bicycle front wheel drive device of claim 1, wherein the inner surface of the rim of the ratchet wheel is provided with a one-way bearing, and the inner ring of the one-way bearing is provided with an internal thread for screwing the front wheel The threaded section at one end of the hub causes the front wheel hub to rotate in one direction in the forward direction.