CN201074006Y - Driven adjustable semi-lying bicycle - Google Patents

Abstract

The utility model relates to a driving-adjustable half-lie bicycle via which user can lie to drive front wheel and seat to drive back wheel. The utility model is composed of a handle bar, a frame, a saddle, wheels and two transmission mechanisms, wherein the handle bar (15) is in the shape of general bicycle handle bar, the frame (3) has low front and high back, an upper pipe (14) is horizontal and connected with a forkhead tube (17) and an upright tube (3), a bottom fork (5), an upright fork (8) and the upright fork (4) are connected in triangle shape, the saddle is composed of a cushion (12) and a backrest (11) which are both fixed on the frame (3) via spring pins (13), the cushion (12) has two fixing positions to provide a half-lie driving state and a seat driving state, the wheels have a large one and a small one, the two transmission mechanisms are respectively arranged at middle and the front portion of the forkhead tube (17), which are both composed of a chain wheel (21), a flywheel (1), a chain (23), a crank (19) and a pedal (18). The utility model has two driving methods, with convenience, saved power and safety.

Description

Drive adjustable semi-recumbent bike

Technical field:

The utility model belongs to a means of transport instead of walking, and relates to a semi-recumbent bicycle with adjustable driving, which can drive the front wheels forward in a semi-recumbent mode and drive the rear wheels forward in a sitting mode.

Background technique:

Since the invention of the bicycle, it has been developing toward comfort, labor-saving, fast and safe, but the development of the bicycle today is not satisfactory, and there are many shortcomings: (1) the seat is uncomfortable, the seat is a triangle, and the front end is placed on the The inside of the two thighs, so it is easy to rub the skin when riding a bicycle, and it just squeezes the perineum of the cyclist. Cycling for a long time will make people feel numb around, and it is not good for health. (2) The shoulders bear a lot of force, and the structural position of the seat and the handlebar impels the rider to lean forward, so the shoulders are under great pressure, and the shoulders will feel sore when riding for a long time. (3) the speed is slow, and the vehicle seat and the pedals are nearly vertical, and this structure is not enough to push up, so the speed is slow. (4) The seat is high, and the high center of gravity of the body is not conducive to balance, and the safety performance is poor, so it is not suitable for children and the elderly.

Invention content:

The purpose of the drive-adjustable semi-recumbent bicycle of the utility model is to overcome the above-mentioned shortcomings of existing ordinary bicycles, improve the structure of the bicycle, and realize the semi-recumbent bicycle with comfortable sitting posture, labor-saving riding, safe and stable driving, flexible operation and fast speed specialty.

Brief description of the content of the utility model driven adjustable semi-recumbent bicycle:

The utility model is made up of handlebar, vehicle frame, vehicle seat, wheel and transmission mechanism. Handlebar (15) adopts ordinary bicycle flat handlebar shape: vehicle frame (3) adopts the form of low front and high rear, upper pipe (14) horizontally connects fork head pipe (17) and standpipe (4) front and back, and flat fork (5 ) and the vertical fork (8) form a diagonal connection with the riser (4); the seat is composed of two parts, the seat cushion (12) and the backrest (11), both of which are fixed on the frame (3) by spring pins (13) ), the seat cushion (12), the backrest (11) and the rocker arm (10) are connected by hinges, and have two fixed positions, forming a semi-lying riding posture and a sitting riding posture. Wheel adopts one large and one small design, and front wheel (2) adopts the tire of eighteen inches, and rear wheel (6) adopts twenty-six inch tire. Two cover driving mechanisms are positioned at the front part of middle part and fork pipe (17) respectively, all are made up of sprocket wheel (21), flywheel (1), chain (23), crank (19), pedal (18). Its transmission principle is different from that of ordinary bicycles, and its outstanding advantage is that it has two riding modes, which are comfortable, labor-saving and safe.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

Figure 2 is a schematic diagram of the seat shape and the upper structure of the riser.

In Figure 1:

1-Flywheel, 2-Front Wheel, 3-Frame, 4-Standpipe, 5-Fork, 6-Rear Wheel, 7-Shelf, 8-Standing Fork, 9-Seat Cushion Bracket, 10-Rocking Arm, 11 -backrest, 12-seat cushion, 13-spring pin, 14-top tube, 15-handlebar, 16-handle stem, 17-fork tube, 18-pedal, 19-crank, 20-fork, 21 -Sprocket, 22-Bracket tube, 23-Chain

Detailed ways:

The utility model drives the adjustable semi-recumbent bicycle and realizes like this:

As shown in Figure 1, the rear end of the transverse main support body of the bicycle frame (3) of the present utility model is connected with a flat fork (5), and a rear wheel (6) is positioned at the rear end of the flat fork. (3) A fork tube (17) runs through the predetermined position of the front part of the tube body longitudinally to provide the penetration of the front fork (20) and the positioning of the handle standpipe (16), and a front fork (20) is positioned at the end of the front fork (20). wheel (2). This handle standpipe (16) is connected with handlebar (15), and handlebar (15) adopts the flat handle molding of common bicycle. At the appropriate position near the rear end of the vertical fork (8), a shelf (7) is provided for the seat back (11) to be placed flat and fixed.

A central axis tube (22) with a central axis assembly is arranged at the front end of the car, and the central axis assembly is arranged and positioned in front of the fork pipe (17), on which a sprocket (21) and a crank (19) are positioned. And pedal (18), sprocket wheel (21) is connected with the flywheel (1) on the front axle by chain (23), and this cover axis assembly turns to together with handlebar (15) and front wheel (2); Bicycle is the same, another set of axis assembly is provided with at flat fork (5) front end, and device is positioned with sprocket wheel, crank and pedal on it, and sprocket wheel is connected with the flywheel on the rear axle by chain.

When adopting the driving system of front part, seat cushion (12) is positioned at the upper tube (14) top, is fixed by spring pin (13), and backrest (11) is positioned at standpipe (4) front and is fixed by spring pin. When the rear drive system is used, the seat cushion (12) moves to the top of the standpipe (4) through the rocker arm (10), and is positioned by the spring pin that fixes the backrest before moving, and the backrest (11) is placed flat and fixed on the On the shelf (7) above the rear wheel (6), now the backrest (11) has a certain carrying capacity.

Claims (2)

1. A driving adjustable semi-recumbent bicycle, characterized in that: the vehicle frame (3) adopts the form of low front and high rear, and the upper tube (14) is horizontally connected to the fork tube (17) and the standpipe (4) front and rear, The flat fork (5) and the vertical fork (8) form a triangular connection with the standpipe (4); there are two sets of drive systems, one in front and one behind, on the vehicle frame (3); the first set of drive systems is on the fork tube ( 17) The front end is provided with a central axis tube (22) with a central axis assembly, on which a pedal (18), a crank (19) and a sprocket (21) are installed, and on the front wheel (2) There is a flywheel (1), and the sprocket (21) and the flywheel (1) are connected by a chain for transmission; the second set of drive system is provided with another set of central axis assembly at the front end of the flat fork (5), on which a pedal is positioned , crank and sprocket, and the sprocket is connected with the flywheel on the rear axle by a chain. 2. The drive-adjustable semi-recumbent bicycle according to claim 1, characterized in that the seat is connected to the standpipe (4) through a rocker arm (10), and can be switched between two positions.

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