JP3054012U - Rack drive bicycle - Google Patents

Abstract

(57) [Summary] [Purpose] To realize easy pedal rotation and safe and enjoyable cycling. A crankshaft and a rotary plate are connected by a pair of gears. The pin 6 provided on the rotating plate and the connecting rod 9 are connected via a bearing, and a pair of opposing racks 11 integrated with the connecting rod are provided.
12 is connected to two pinions 13 and 14 mounted on the rear wheel and transmitting rotation in only one direction, respectively, from above and below.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a method for driving a bicycle.

[0002]

[Prior art]

 A chin wheel provided on the rear wheel is driven by a chain using a chain wheel on the crankshaft and propelled.

[0003] The conventional rear-wheel drive with chains sometimes causes the chains to come off, tear the chains, bite clothes into the chain, and the like.

[0004]

[Problems to be solved by the invention]

 The purpose of the present invention is to eliminate the accidents associated with this chain drive and provide the rider with the pleasure of driving safely and, in addition, driving with the third innovative drive method after chain drive and shaft drive. Make it an issue.

[0005]

[Means for Solving the Problems]

 According to the present invention, the above problem is solved as follows. The crankshaft and the rotating plate are connected by a pair of gears. In addition, two pinions having the function of transmitting the rotational force only in the traveling direction to the rear wheel axle are attached, and these are connected from above and below by two integrated racks, and other than the slide plate integrated with this rack The end is connected to a pin on the rotating plate via a bearing.

[0006]

[Embodiment]

 The drawings show an embodiment of the present invention, in which a crankshaft (1) and a rotating plate (5) are connected by a pair of gears (2) and (3) and a middle shaft (4). The pin (6) provided on the rotary plate connects the end of the connecting rod (9) to the rotary plate via the bearing 1 (7), and the rotation of the pedal is guided at the other end. This connecting rod is caused to perform an oscillating movement with vertical movement.

As shown in FIG. 4, two pinions (13) and (14) mounted on the rear wheel axle with the bearing 2 (8) interposed therebetween drive the rear wheel axle (15) only in the traveling direction. In the opposite direction, it has a function of idling, and it is connected from above and below to two opposing racks (11) and (12), and the slide plate (10) integrated with this rack is The slide plate slides right and left so as to be guided by the bearing 2. By connecting the other end of the slide plate to the connecting rod, the rotation of the pedal is connected to the drive of the pinion.

In this manner, the rotation of the pedal causes the two pinions to rotate simultaneously and continuously to the left and right. When the rack 1 slides to the right, the pinions 1 are driven clockwise. In this direction, the rear wheel axle is driven. At this time, the pinion 2 meshing with the lower rack 2 rotates counterclockwise, and in this direction, the rear wheel axle rotates without driving. When the slide plate is slid to the right by the rotating plate to the top dead center, the driving direction of the rack is reversed and the rotation direction of the pinion is also reversed. The pinion 1 is left and the pinion 2 is right. As a result, the pinion that had been driving until now spins idle, and the pinion that had been spinning idles now drives. Thus, in the present invention, the rotation of the pedal is continuously guided to the driving of the rear wheel through one of the pinions.

[0009] In this method of driving a double rack bicycle using a rotating plate, the top dead center of the connecting rod is phased to the top dead center of the pedal, so that a conventional bicycle of chain drive or shaft drive is used. With a much lighter depressing force, it passes through the top dead center of the pedal, and has the characteristic of easy pedaling.

[0010]

[Effects of the Invention] For the above reasons, the present invention has the following effects. (A) Eliminate accidents associated with chain drive such as detachment of chain, tearing of chain, and biting of clothes into chain, and realize safe driving.

(B) Since the pedal is lightly depressed at the top dead center, gentle pedal rotation is realized.

[0012] (C) A fun driving is realized because of the novel driving method.

[Brief description of the drawings]

FIG. 1 is an overall front view of a bicycle showing an embodiment of the present invention.

FIG. 2 is a front view of a driving part showing one embodiment of the present invention.

FIG. 3 is an enlarged view as seen from arrows PP in FIG. 2;

FIG. 4 is an enlarged view of a QQ section of FIG. 2;

[Explanation of symbols]

 (1) Crankshaft (2) Gear 1 (3) Gear 2 (4) Middle shaft (5) Rotating plate (6) Pin (7) Bearing 1 (8) Bearing 2 (9) Connecting rod (10) Slide plate ( 11) Rack 1 (12) Rack 2 (13) Pinion 1 (14) Pinion 2 (15) Rear wheel axle (16) Spoke

Claims (3)

[Utility model registration claims] 1. A bicycle in which a pinion mounted on a crankshaft is driven and propelled by a rack rocked by a pedal. 2. The bicycle according to claim 1, wherein the rack is swung by a pin on a rotating plate driven by a gear mounted on a crankshaft. 3. The two pinions mounted on the rear wheel, which transmit rotational force only in one direction, are simultaneously driven in different directions by swinging of a pair of two racks to continuously obtain propulsion force. Bicycle.