JPH0234828B2 - JUSEIHAGURUMAKI KOORYOSHITAKAITENSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating device that uses a planetary gear mechanism, which allows the device itself to be made smaller and lighter, and allows accelerated rotation to be obtained from an output wheel. It is used by being incorporated into the drive part of a bicycle.

Conventional rotating devices have the problem that if they are formed so that the speed ratio can be set to a large value, the device itself becomes large and heavy. Various types of wheels and wheels with adjustable speed ratios have been manufactured, but the chain wheel on the drive side has a large number of teeth, a large diameter, and is heavy, and is also cumbersome and expensive to manufacture. However, it has had various problems, such as the difficulty of setting a large speed ratio on the drive side.

Therefore, the present invention aims to reduce the size and weight of the rotating device itself, and also allows the maximum range of the speed ratio to be set to a large range. In addition, the planetary gear that revolves while rotating is fixed to the rotational shaft, and the arm rod that supports and revolves this rotational shaft is rotatably attached to the pedal shaft, and the rotation of the planetary gear is transmitted to the driving side via the rotational shaft. The sprocket is formed so that the rotation of the driving sprocket is sequentially transmitted to the driven sprocket via a chain, and the rotation of the driven sprocket is sequentially transmitted to the output wheel via a connecting shaft. The invention consists in forming a rotation axis revolution mechanism which allows the rotation axis to revolve around the bicycle and allows the rotation of the bicycle to idle.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1 indicates a planetary gear, and this planetary gear 1 meshes with a sun gear 2 fixed to a frame 30 via a mounting piece 31, and is attached to an arm rod 4 so as to revolve while rotating. It is fixed to one end of the rotating shaft 3 that is supported.

The arm rod 4 rotatably supports the rotating shaft 3 at its distal end, and its base end supports the pedal shaft 10.
It is rotatably attached to the shaft 3, and is formed so that the rotation shaft 3 can rotate and revolve. Bearings 4a and 4a are provided at the tip and base ends of the arm rod 4, respectively, so that the rotation axis 3 can rotate and revolve more smoothly.

Reference numeral 5 denotes a driving side sprocket fixed approximately at the center in the longitudinal direction of the rotation shaft 3, and the rotation of the planetary gear 1 is controlled by a driven side sprocket 7 fixed to the other end of the connecting shaft 8.
The signal is transmitted through the chain 6.

The connecting shaft 8 is formed into a substantially cylindrical shape so as to be able to rotatably support the pedal shaft 10, and has an output wheel 9 (chain wheel) fixed to one end thereof. Moreover, driven side sprocket 7
is located on the other side of the sun gear 2, and the output wheel 9 is located on one side of the sun gear 2.

A pedal crank 11 having a pedal 12 at the tip is fixed to the other end of the pedal shaft 10, and a roller 13 is rotatably attached to a predetermined position of this pedal crank 11.
3 is parallel to the axis of the rotating shaft 3, and the circumferential surface of the roller 13 contacts the circumferential surface of a disk 14 fixed to the other end of the rotating shaft 3, and presses the disk 14. It is formed so that the rotation axis 3 can be revolved.

In addition, in FIG. 1, the roller 13 and the disc 1
4 constitutes the rotation axis revolution mechanism K, but the rotation axis revolution mechanism K is not limited to this. Any device may be used as long as the shaft 3 can revolve and the rotation shaft 3 can idle, and the roller 13 and disc 14 may be replaced with a pair of gears, or a third It may be configured as shown in FIGS. 5 to 5.

In FIG. 3, a roller 1 is rotatably supported between two discs 15, 15.
6, 16, 16 is pressed by the pedal crank 11 itself, the rotation axis revolution mechanism K is configured,
The revolution and rotation of the rotation axis 3 can be performed more smoothly, and the rotation axis 3 can be powerfully revolved. Note that the number of rollers 16, their arrangement positions, etc. are not limited to the illustrated example, as long as the rollers 16 can be strongly and smoothly pressed by the pedal crank 11.

In FIG. 4, a small sprocket 18 is rotatably supported at a predetermined position of a sprocket support rod 17 that rotatably supports the other end of the rotating shaft 3.
18 and a small sprocket 19 that is rotatably supported by the pedal crank 11, a revolution chain 20 is used to revolve and rotate a large sprocket 21 fixed to the other end of the rotation shaft 3. The rotation axis revolution mechanism K is configured as such, and the rotation axis 3 can be powerfully and effortlessly revolved and rotated. Note that 22 is a guide wheel that is pressed against the revolution chain 20 to prevent the revolution chain 20 from loosening. Reference numeral 23 denotes an elongated hole bored in the pedal crank 11, into which a protruding pin protruding from the sprocket support rod 17 is loosely inserted.

In Fig. 5, large gear 24, intermediate gear 2
5, 25, 25 and a sprocket 26, a large gear 24 is fixed to the other end of the rotation shaft 3, and the entire gear train 27 is connected to the arm rod 2.
8, an autorotation shaft revolution mechanism K is supported on the pedal shaft 10 so as to be able to revolve freely, and the gear train 27 is revolved and rotated by a pinion 29 that is rotatably supported at a predetermined position of the pedal crank 11. This makes it possible to rotate the rotation shaft 3 more strongly, and also makes it easier to start up the entire apparatus.
In the illustrated example, a pinion 29 is attached to the large gear 24.
are in mesh with each other, but the pinion 29 is in mesh with the intermediate gear 25.
Alternatively, as shown in FIG. 3, the roller 16 may be rotatably attached to the large gear 24, and the roller 16 may be pressed by the pedal crank 11 itself.

The rotation axis revolution mechanism K described above is not limited to the illustrated example and can be freely set as long as it allows the rotation and revolution of the rotation axis 3 to be performed powerfully and smoothly, and also makes it easy to start the device itself. It is possible.

The present invention is constructed as described above, and when the pedal crank 11 is rotated by putting the foot on the pedal 12, the disc 14 is revolved by the roller 13,
In addition, the planetary gear 1 revolves and is rotated by the sun gear 2, the driving side sprocket 5 similarly revolves and rotates, and the rotation of the driving side sprocket 5 is transmitted to the driven side sprocket 7 via the chain 6, Further, the output wheel 9 also rotates together with the connecting shaft 8, and rotational force is transmitted to the rear wheels via the drive chain 32 wound around the output wheel 9. If the number of teeth of the gear and sprocket is set so that, for example, the sun gear 2 has 36 teeth, and the planetary gear 1, driving sprocket 5, and driven sprocket 7 each have 12 teeth, the pedal crank 11 rotates once. Then, the output wheel 9 will rotate four times.

Further, the pedal crank 11 may be rotated by an electric motor or the like, or the output may be taken directly from the output wheel 9.

Therefore, the sun gear 2 is fixed to the frame 30,
A planetary gear 1 that meshes with this sun gear 2 and revolves while rotating is fixed to an autorotation shaft 3.
The arm rod 4 that supports and revolves the pedal shaft 10
The rotation of the planetary gear 1 is transmitted via the rotation shaft 3 to the driving side sprocket 5, the rotation of the driving side sprocket 5 is transmitted to the driven side sprocket 7 via the chain 6, and the rotation of the driven side sprocket 7 is transmitted through the chain 6. It is formed so that it is sequentially transmitted to the output wheel 9 via the connecting shaft 8, and by the rotation of the pedal crank 11, the rotation shaft 3 is caused to revolve so that the planetary gear 1 revolves, and the rotation of the rotation shaft 3 is caused to idle. Since the rotation axis revolution mechanism K is formed in this manner, the device itself can be made smaller and lighter, and
The maximum range of the speed ratio can be set large, and accelerated rotation can be obtained from the output wheel 9. Moreover, it becomes a highly versatile rotating device that can be used for various purposes. Also, the driving side sprocket 5
The rotation of the sprocket is transmitted to the driven side sprocket 7 via the chain 6, so it is possible to reliably transmit rotational force and to transmit a large force.In order to increase the speed ratio, the smaller driven side A sprocket 7 or a larger driving side sprocket 5 can be used, and in that case, even if the contact angle between the driven sprocket 7 and the chain 6 is reduced, rotation can be reliably transmitted.

Furthermore, due to the rotation and revolution mechanism K, the rotation of the rotation axis 3 is smooth, the rotation of the rotation axis 3 is strong, and the startability of the device itself is good, and the pedal crank 11
The force applied to the rotating shaft 3 can be effectively transmitted to the rotation axis 3.

Furthermore, it can be made smaller and lighter, the speed ratio can be set higher, and the startability is better, so these effects can be more effectively exhibited when used on a bicycle.

As explained above, according to the present invention, it is possible to reduce the size and weight of the rotating device, and the speed change range is wide, and the structure is simple and robust, and other excellent effects are achieved. It is.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a partially omitted perspective view, FIG. 2 is a partially omitted plan view, and FIGS. 3 to 5 are partially omitted front views of other embodiments. It is. 1... Planet gear, 2... Sun gear, 3... Rotating shaft, 4... Arm rod, 4a... Bearing, 5... Driving side sprocket, 6... Chain, 7... Driven side sprocket, 8... ...Connection shaft, 9...Output wheel, 10...Pedal shaft, 11...Pedal crank, 12...Pedal, K...Rotation axis revolution mechanism, 1
3...Roller, 14...Disc, 15...Disc,
16... Roller, 17... Sprocket support rod, 18... Small sprocket, 19... Small sprocket, 20... Revolution chain, 21... Large sprocket, 22... Guide wheel, 23... Long hole, 2
4... Large gear, 25... Intermediate gear, 26... Sprocket, 27... Gear train, 28... Arm rod, 29
... Pinion, 30 ... Frame, 31 ... Mounting piece, 32 ... Drive chain.

Claims (1)

[Claims] 1. A sun gear is fixed to a frame, a planetary gear that meshes with the sun gear and revolves while rotating is fixed to an autorotation shaft, and an arm rod that supports and revolves around this autorotation shaft is rotated around the pedal shaft. Mounted freely, the rotation of the planetary gear is sequentially transmitted to the driving sprocket via the rotation shaft, the rotation of the driving sprocket is transmitted to the driven sprocket via the chain, and the rotation of the driven sprocket is sequentially transmitted to the output wheel via the connecting shaft. A planetary planet, characterized in that it is formed such that the planetary gear is rotated by the rotation of a pedal crank, and is formed with a rotation axis revolution mechanism in which the rotation axis is caused to revolve so that the planetary gear revolves, and the rotation of the rotation axis is made to idle. A rotating device that uses a gear mechanism.