JPH0914381A - Rotational driving force transmission device - Google Patents

Abstract

PURPOSE: To reduce energy required for input and to improve output efficiency by supporting an inner gear on an inner gear fixing board set on a support shaft through a bearing and setting an output means smaller in diameter than the inner gear on the bearing with the inner gear setting board set on it. CONSTITUTION: When rotational driving force is input to an input means 5, a driving sprocket 7 integrated with the input means 5 through a bearing 6 is rotated around a support shaft 4 as its axis and rotates and drives a driven sprocket 11 through a chain 15. Rotational driving force against the driven sprocket 11 is transmitted to an inner gear driving gear 12 as it is through a gear shaft 9, and the inner gear driving gear 12 tries to revolve while rotating its circumference along a static gear 16 as it is engaged with the static gear 16. Rotation of an inner gear 17 is supported on an inner gear fixing board 19 integrated through a pin 18, transmitted to an output gear 21 through a bearing 20 and output.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention requires a rotary driving force transmission device, more specifically, a vehicle, a bicycle, a generator, an internal combustion engine, a used paper cutting machine (shredder), various machine tools, and other rotary driving force. In transmitting the rotary driving force from the rotary drive source such as a motor to the mechanical equipment to be used, the rotary drive is interposed between the mechanical equipment and the rotary drive source, or is used by being incorporated in the mechanical equipment. The present invention relates to a force transmission device.

[0002]

2. Description of the Related Art Conventionally, in a mechanical device such as a generator, which requires a rotational driving force, a transmission device for increasing a rotation torque may be provided although a transmission device merely converting a rotation speed is interposed. There is no consideration to intervene, and the rotation is directly driven by a drive source such as a motor.

[0003]

As described above, in a conventional device such as a generator that requires a rotary driving force, a direct motor or the like can be used without a transmission device that increases the rotary torque. It is driven, and there has been little consideration for reducing the load on the motor and improving the output efficiency. Therefore, it is an object of the present invention to provide a rotational driving force transmission device capable of reducing the load on the motor and the like, reducing the energy required for input such as power consumption, and improving the output efficiency.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a support shaft which does not rotate is provided, and a bearing on which a rotary drive force input means and a drive sprocket having a smaller diameter than the drive shaft are concentrically fixed is attached to the support shaft. A stationary gear is fixed to the support shaft, and a gear support arm is attached via a bearing so as to be located between the stationary gear and the drive sprocket, and the gear shaft is attached at an end of the gear support arm. The driven sprocket is attached to the driving sprocket-side protruding end of the gear shaft, and a chain is wound between the driven sprocket and the driving sprocket, and the stationary gear-side protruding end of the gear shaft is inserted into the inner gear. An internal gear drive gear that engages with the stationary gear and externally engages with the stationary gear is attached, and the internal gear is supported by an internal gear fixing plate installed through a bearing on the support shaft to fix the internal gear. Made by installing an output means of smaller diameter than the inner gear installed bearing the rotational driving force transmission apparatus, with a the above-mentioned problems are eliminated.

The gear mounting arm is formed so as to be symmetrical with respect to the support shaft, and has a gear shaft protruding only toward the stationary gear side at the end opposite to the side where the gear shaft is installed. It is preferable that an auxiliary gear, which meshes with the inner gear and meshes with the stationary gear, is attached to the protruding end thereof. When the present invention is applied to a bicycle, a rotatable insertion shaft is provided in the support shaft, and a crank arm of a pedal serving as an input means is fixed to the insertion shaft.

[0006]

[Operation] When the drive sprocket is rotationally driven by the rotational drive force input from the input means, the driven sprocket is rotationally driven via the chain, and the internal gear drive gear integrated with this is rotated. To do. Since the internal gear drive gear meshes with the stationary gear that does not rotate, it revolves around it while revolving around it, and as a result, the internal gear is rotationally driven in the same direction and output from the external output means integrated with it. .

[0007]

Embodiments of the present invention will be described with reference to the accompanying drawings. First, the embodiment shown in FIGS. 1 to 3 will be described. In the figure, reference numeral 1 is a base, and shaft fixing plates 2 and 3 are erected on both sides of the base, and are supported between the shaft fixing plates 2 and 3. Axis 4 is passed. The support shaft 4 is fixed to the shaft fixing plates 2 and 3 and does not rotate. 5
Is an input means directly connected to a driving device such as a motor, and includes a sprocket, a pulley and a gear. When installed in a bicycle, it replaces the pedal crank. The input means 5 is rotatably supported by the support shaft 4 via a bearing 6.

A drive sprocket 7 is fixed to the bearing 6, and the drive sprocket 7 rotates integrally with the input means 5 about the support shaft 4. The diameter of the drive sprocket 7 is considerably smaller than that of the input means 5 (for example, the diameter ratio is 1: 3). Reference numeral 8 denotes a gear support arm pivotally supported by the support shaft 4, and both ends of the gear support arm pivotally support the gear shafts 9 and 10. A driven sprocket 11 is provided at the end of one gear shaft 9 on the input means 5 side.
Is fixed, and the inner gear drive gear 12 is fixed to the opposite end. Therefore, the driven sprocket 11 and the internal gear driving gear 12 integrally rotate in the same direction. The driven sprocket 11 has a smaller diameter than the driving sprocket 7, and has a diameter ratio of about 2: 5, for example.

The gear shaft 10 projects only on the side where the internal gear drive gear 12 is installed, and an auxiliary gear 13 is fixed to the end of the gear shaft 10. A chain 15 is wound between the drive sprocket 7 and the driven sprocket 11. The inner gear drive gear 12 and the auxiliary gear 13 have the same diameter and the same number of teeth, and both of them have the support shaft 4
It externally meshes with a stationary gear 16 that is fixed to the stationary gear 16 and does not rotate. Further, the internal gear drive gear 12 and the auxiliary gear 13 internally mesh with the internal gear 17 rotating about the support shaft 4 at symmetrical positions.

The internal gear 17 is fixed to and supported by an internal gear fixing plate 19 via a plurality of pins 18. The inner gear fixing plate 19 is pivotally supported by a bearing 20 installed on the support shaft 4.
Output means 21 is further fixed to the bearing 20. The output means 21 has a sprocket, pulley, and
A transmission means such as a gear is used.

In the above structure, when the rotational driving force is input to the input means 5, the drive sprocket 7 integrated with the input means 5 through the bearing 6 is integrated with the input means 5 to support the support shaft 4. The driven sprocket 11 is rotated about the shaft and rotationally driven through the chain 15. At that time, since the diameter of the input means 5 is considerably larger than the diameter of the drive sprocket 7, the drive sprocket 7 outputs a force considerably larger than the input to the input means 5 due to the principle of work in the wheel axle. .

The rotational driving force for the driven sprocket 11 is directly transmitted to the inner gear driving gear 12 via the gear shaft 9, and the inner gear driving gear 12 tries to rotate at that position about the gear shaft 9. However, the internal gear drive gear 12
Since it meshes with the stationary gear 16 that is fixed to the support shaft and does not rotate, it exhibits a motion of revolving around the stationary gear 16 while revolving around it by the action of attempting to rotate.

Considering the rotation of the internal gear drive gear 12, a couple of forces act on the contact point with the stationary gear 16 and the contact point with the internal gear 17, but the stationary gear 16 does not rotate. All the rotational driving force of the internal gear drive gear 12 is reflected on the internal gear 17, the internal gear 17 is rotationally driven in the rotation direction of the internal gear drive gear 12, and the internal gear drive gear 12 revolves along the stationary gear 16. The rotation of the inner gear 17 is supported by an inner gear fixing plate 19 integrated through a pin 18, and is also output through a bearing 20 as an output gear 2 as an output means.
1 is transmitted and output.

Since the inner gear fixing plate 19 to which the inner gear 17 is fixed and the output means 21 having a smaller diameter than the inner gear 17 are fixed to the same bearing 20, the rotational driving force for the inner gear 17 is also here due to the work principle of the wheel set. As a result, a larger force is output, and efficient rotational force transmission with less friction loss is performed overall.

When the gear support arm 8 is provided symmetrically with respect to the support shaft 4 and the gear shaft 10 is provided, and the gear shaft 10 is provided with the auxiliary gear 13 which meshes with the stationary gear 16 and the inner gear 17,
The rotation of the gear support arm 8 is stable, and the internal gear 17 can be comfortably rotated.
Can be driven to rotate.

When the present apparatus is incorporated in a bicycle, the base 1 and the shaft fixing plates 2 and 3 are unnecessary, and a rotatable insertion shaft is inserted into the support shaft 4, and the rotation shaft is inserted into the insertion shaft. Bearing 6
Attach the pedal crank fixed to. Thus, when the pedal is depressed, this becomes an input, and its rotational force is transmitted in the same manner as described above, then output, and transmitted to the rear wheels.

[0017]

The present invention is as described above. By interposing the present device in the rotational driving force transmission process, it is possible to increase the rotational torque, improve the output efficiency, and save. There is an effect that it can contribute to energy and can be used for various devices that require rotational driving force such as vehicles, generators, machine tools and the like.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of an embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA in FIG.

[Explanation of symbols]

 4 Support shaft 5 Input means 6 Bearing 7 Drive sprocket 8 Gear support arm 9 Gear shaft 10 Gear shaft 11 Driven sprocket 12 Inner gear Drive gear 13 Auxiliary gear 15 Chain 16 Stationary gear 17 Inner gear 19 Inner gear fixed plate 20 Bearing 21 Output gear

Claims (3)

[Claims] 1. A support shaft which does not rotate is provided, and a bearing having a rotational drive force input means and a drive sprocket having a diameter smaller than this concentrically fixed to the support shaft is attached to the support shaft, and a stationary gear is fixed to the support shaft. At the same time, the gear support arm is attached via a bearing by being positioned between the stationary gear and the drive sprocket, and the gear shaft is rotatably supported at the end of the gear support arm. A driven sprocket is attached to the driving sprocket-side protruding end, and a chain is wound between the driven sprocket and the driving sprocket, and the stationary gear-side protruding end of the gear shaft is internally meshed with the stationary gear. An internal gear drive gear that externally meshes with is attached to the internal gear fixing plate installed on the support shaft via a bearing, and the internal gear is attached to the bearing on which the internal gear fixing plate is installed. (A) A rotary drive force transmission device which is provided with an output means having a diameter smaller than that of the rotary drive force transmission device. 2. The gear support arm has a symmetrical shape with respect to the support shaft, and the end of the gear support arm opposite to the side where the gear shaft is installed has a gear shaft protruding only toward the stationary gear side. The auxiliary gear, which meshes inwardly with the inner gear and meshes with the stationary gear, is attached to the projecting end of the auxiliary gear.
The rotational driving force transmission device described. 3. The rotary drive force transmission device according to claim 1, wherein a rotatable insertion shaft is provided in the support shaft, and the insertion shaft is fixed to the input means.