CN108820110A - A kind of Exercycle - Google Patents

Abstract

The invention relates to the field of vehicles, and particularly discloses an exercise bicycle. It includes front wheels, rear wheels, handlebars, and the center shaft in the center shaft tube. The center shaft is provided with a large chainring, and the rear wheel is provided with a rear flywheel. Fork, the handlebar is covered with an outer fork, the outer fork is hinged to the rear fork, the upper end of the rear fork is fixed on the central shaft tube; the front flywheel is arranged on the central shaft, and the frame is fixed between the outer fork and the seat tube. An auxiliary shaft is arranged on the top, and an upper chainring and two ratchets are arranged on the auxiliary shaft. A pull rod is hinged on each ratchet. The front end of the pull rod is hinged on the outer fork, and the front flywheel and the upper chain are linked by an auxiliary chain. During the riding process, by shaking the handlebar back and forth, the V-shaped tie rod combination is continuously opened and closed, which plays a role in assisting the vehicle to move forward, and at the same time exercises the upper limbs and enhances the strength of the upper limbs.

Description

an exercise bike

technical field

The invention relates to the field of vehicles, in particular to an exercise bike.

Background technique

China is the kingdom of bicycles. Most ordinary people travel by bicycle, which is both environmentally friendly and healthy. At the same time, with the progress of society and the improvement of people's living standards, people pay more and more attention to their health. Therefore, many exercise bicycles have appeared, but these exercise bicycles are limited to Indoor, and it is only beneficial to the fitness of the lower limbs, and has little effect on the exercise of the upper limbs. Also do not have at present a kind of bicycle that can not only replace walking but also can exercise upper and lower limbs simultaneously.

Contents of the invention

In order to make up for the defects of the prior art, the present invention provides an exercise bicycle that can not only replace walking, but also exercise the upper and lower limbs at the same time.

The present invention is achieved through the following technical solutions:

An exercise bicycle, comprising front wheels, rear wheels, handlebars, and a central shaft. The central shaft is provided with a large chainring, and the rear wheel is provided with a rear flywheel. The large chainring and the rear flywheel are linked by a chain. The central shaft is located at In the central axis tube, the seat tube is fixed on the central axis tube, and the seat tube is provided with a seat that can adjust the height. The lower end of the handlebar is a front fork, and the front fork is hinged on the front wheel. It is characterized in that,

The handlebar is covered with an outer fork, the two lower ends of the outer fork are respectively hinged with the two lower ends of the rear fork, and the upper end of the rear fork is fixed on the central axis tube. When the handlebar is forward, The two lower endpoint hinge points are coaxial with the front axle of the front wheel;

A front flywheel is arranged on the center shaft, a vehicle frame is fixed between the rear fork and the seat tube, and an auxiliary shaft is arranged on the vehicle frame, and an upper tooth plate and two ratchets are arranged on the auxiliary shaft, each Pull rods are all hinged on the ratchet, and the front ends of the pull rods are hinged on the outer fork. The two pull rods are in a V-shaped structure, and the front flywheel and the upper chainring are linked by an auxiliary chain.

The front wheel diameter is smaller than the rear wheel diameter.

The handlebar is T-shaped.

The vehicle seat is a backrest vehicle seat.

A crank is fixed on the ratchet, and the crank is hinged to the pull rod.

The outer fork is provided with a swing limit post facing the vehicle frame.

The beneficial effects of the present invention are:

During the riding process, by shaking the handlebar back and forth, the V-shaped tie rod combination is driven to continuously open and close, that is to say, the two ratchets reciprocate in opposite directions, so that the two ratchets drive the auxiliary shaft to rotate continuously. Thus, the central shaft is driven to rotate through the auxiliary chain and the front flywheel, which plays a role in assisting. At the same time, it also exercises the upper limbs and enhances the strength of the upper limbs.

Description of drawings

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is a right view structure diagram of the handlebar part;

Fig. 3 is a top view structural schematic structural schematic diagram of the central axis part;

Fig. 4 is a top view structural schematic diagram of a V-shaped combination of pull rods;

Fig. 5 is a structural schematic diagram of the rear fork.

In the figure, 1 front wheel, 2 rear wheel, 3 handlebar, 4 center shaft, 5 large crankset, 6 rear flywheel, 7 chain, 8 center shaft tube, 9 seat tube, 10 adjustment lever, 11 seat, 12 front fork , 13 outer fork, 14 rear fork, 15 connecting rod, 16 front flywheel, 17 frame, 18 auxiliary shaft, 19 upper chainring, 20 ratchet, 21 crank, 22 tie rod, 23 auxiliary chain, 24 front axle, 25 swing Limit post, 26 bearings.

Detailed ways

Accompanying drawing is the specific embodiment of the present invention. As shown in Fig. 1 to Fig. 5, this kind of fitness bicycle, it comprises front wheel 1, rear wheel 2, handlebar 3, central shaft 4, and large chainring 5 is fixedly installed on central shaft 4, rear wheel 2 is provided with rear flywheel 6. The big chainring 5 and the rear flywheel 6 are connected by a chain 7. The central axis 4 is located in the central axis cylinder 8, and the seat tube 9 is fixed on the central axis cylinder 8. The seat tube 9 can be adjusted by installing an adjustment rod 10 The height of the vehicle seat 11, the vehicle seat 11 is a backrest vehicle seat 11, wherein,

The handlebar 3 is T-shaped, the lower end of the handlebar 3 is a front fork 12, and the two lower ends of the front fork 12 are hinged on the front wheel 1;

Outer fork 13 is sleeved on handlebar 3, and outer fork 13 is U-shaped, and the upper middle part of outer fork 13 is installed on the handlebar 3 by bearing 26, and two lower ends of outer fork 13 are connected with two ends of rear fork 14 respectively. The two lower end points are hinged, and when the handlebar 3 was forward, the line of the two hinged points was coaxial with the front axle 24 on the front wheel 1, and the rear fork 14 is also U-shaped, with a connecting rod 15 welded in the middle , the other end of the connecting rod 15 is welded and fixed on the central axis cylinder 8; no matter how the handlebar 3 is twisted, the midpoint of the front axle 24 and the above-mentioned two hinge points are always coaxial;

The front flywheel 16 is fixedly installed on the center shaft 4, and an inclined vehicle frame 17 is welded between the rear fork 14 and the seat tube 9, that is to say, the rear end is high and the front end is low, and an auxiliary shaft is installed on the vehicle frame 17 18. An upper chainring 19 is fixedly installed on one end of the auxiliary shaft 18, and two ratchets 20 are installed on the other end, and a crank 21 is welded on each ratchet 20, and each crank 21 is hinged to a pull rod 22, and the other end of the pull rod 22 That is, the front end is hinged on the outer fork 13, and the two pull rods 22 are distributed in a V-shaped structure. During the continuous reciprocating movement of the two pull rods 22 one by one, the two ratchets 20 are driven to reciprocate in the opposite direction all the time. Specifically, if If one ratchet 20 is named A and the other ratchet 20 is named B, driven by the two pull rods 22, A rotates clockwise, then B rotates counterclockwise at the same time, and then A rotates counterclockwise, then B Rotate clockwise simultaneously, link by auxiliary chain 23 between front flywheel 16 and upper crankset 19.

In order to facilitate the rotation of the front wheel 1 and make it more stable, and the leverage point of the handlebar swing structure is stronger, the diameter of the front wheel 1 is smaller than that of the rear wheel 2 .

In order to be comfortable and stable and exert strength with back muscles, the vehicle seat 11 is a backrest vehicle seat.

Weld a swing limit post 25 on the outer fork 13, the swing limit post 25 faces the vehicle frame 17 side, when parking, the lower end of the swing limit post 25 leans against the vehicle frame 17, and the swing limit On the one hand, the column 25 plays a supporting role, and on the other hand, it plays a role of limiting the excessive backward swing of the handlebar.

The movement process is as follows: in the riding process, in addition to normal pedaling, both hands can hold the handlebar 3 and shake the handlebar 3 back and forth, and the handlebar 3 drives the outer fork 13 around the hinge point of the outer fork 13 and rear fork 14. Rotate within a limited range, when the handlebar 3 is pushed forward, the two pull rods 22 hinged on the outer fork 13 respectively pull the ratchet 20 to rotate, one of the pull rods 22 drives the ratchet 20 to move clockwise, and the other pull rod 22 drives The ratchet 20 moves counterclockwise, and the V-shaped opening between the two pull rods 22 becomes smaller. As shown in FIG. , the auxiliary chain 23 and the front flywheel 16 drive the center shaft 4 to rotate, thereby driving the whole bicycle to move forward through the large chainring 5, the chain 7 and the rear flywheel 6, while the other ratchet 20 does not work and does not work; At 3 o'clock, the V-shaped opening between the two pull rods 22 becomes larger, and the ratchet 20 that works just now turns counterclockwise, and does not work when it does not perform work, and the ratchet 20 that does not work and does not work just now turns clockwise The rotation drives the center shaft 4 to rotate through the upper chainring 19, the auxiliary chain 23 and the front flywheel 16, thereby driving the entire bicycle to move forward through the large chainring 5, the chain 7 and the rear flywheel 6, and so on, and the two ratchets 20 work in turn to drive the bicycle Moving forward plays an auxiliary role, while the upper limbs also play a role in exercising the upper limbs by pushing and pulling the handlebar 3 . The front fork 12 of the handlebar 3 and the front axle 24 are fixed and hinged as a whole, so the handlebar 3 can swing back and forth freely, and when the handlebar 3 is turning smoothly, the midpoint of the front axle 24 of the front wheel 1 is always the supporting point. The two hinge points of the outer fork 13 and the rear fork 14 are on the same straight line, which keeps the overall stability.

Except for the technical features described in the description, the rest of the technical features are known to those skilled in the art.

Claims (6)

1. An exercise bicycle, comprising a front wheel (1), a rear wheel (2), a handlebar (3), a central shaft (4), the central shaft (4) is provided with a large chainring (5), and the rear wheel (2 ) is equipped with a rear flywheel (6), and the chain (7) is connected between the big chainring (5) and the rear flywheel (6). The central shaft (4) is located in the central shaft cylinder (8), and the central shaft The seat tube (9) is fixed on the tube (8), and the seat tube (9) is provided with a height-adjustable seat (11). The lower end of the handlebar (3) is a front fork (12), and the front fork ( 12) Hinged on the front wheel (1), characterized by, The handlebar (3) is covered with an outer fork (13), the two lower ends of the outer fork (13) are respectively hinged with the two lower ends of the rear fork (14), and the upper end of the rear fork (14) It is fixed on the central shaft cylinder (8), when the handlebar (3) is in the forward direction, the hinge points of the two lower ends are coaxial with the front axle (24) of the front wheel (1); A front flywheel (16) is arranged on the center shaft (4), a frame (17) is fixed between the rear fork (14) and the seat tube (9), and an auxiliary shaft is arranged on the frame (17) (18), the auxiliary shaft (18) is provided with an upper tooth plate (19) and two ratchets (20), and each ratchet (20) is hinged with a pull rod (22), and the pull rod (22) The front end is hinged on the outer fork (13), and the two pull rods (22) are in a V-shaped structure, and the front flywheel (16) and the upper chainring (19) are linked by an auxiliary chain (23). 2. The exercise bicycle according to claim 1, characterized in that, the diameter of the front wheel (1) is smaller than that of the rear wheel (2). 3. The exercise bicycle according to claim 1, characterized in that, the handlebar (3) is T-shaped. 4. The exercise bicycle according to claim 1, characterized in that, the seat (11) is a backrest seat. 5 . The exercise bicycle according to claim , characterized in that, a crank ( 21 ) is fixed on the ratchet ( 20 ), and the crank ( 21 ) is hinged to the pull rod ( 22 ). 6. The exercise bicycle according to claim 1, characterized in that, the outer fork (13) is provided with a swing limit post (25) facing the frame (17).