JPH05172202A - Non-stage transmission - Google Patents

Abstract

PURPOSE:To provide a non-stage transmission of simple structure by supporting a pair of conical bodies of rotation in a cylinder so as to be arranged in the opposite directions respectively, and by performing speed changing operation through shifting the contact position of a rotary ring, which comes in contact with the external surfaces of both of the conical bodies of rotation. CONSTITUTION:A pair of conical bodies of rotation 2 are supported rotatably in a central portion of the inside of a cylinder 1 so that the apex sides of these conical bodies are arranged on the opposite sides respectively, and the respective input and output shafts are parallel with each other. Inverted V-shaped section drive blades 5 are formed on the conical surfaces of the respective conical bodies of rotation 2. Plural drive bars 6, which are attached elastically to an anular rotary ring 3 held rotatably by a support ring 4 through bearings are engaged with the drive blades 5 of the respective conical bodies of rotation 2. On the inner periphery of the cylinder 1, plural threads of a helicoidal guide groove 7 are formed. The support ring 4 is held so as to move along these guide grooves 7. A speed change regulating system is constituted so as to rotatably shift the support ring 4 by means of a regulating bar 9 attached to the external surface of this support ring 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission that facilitates continuously variable transmission.

[0002]

2. Description of the Related Art Among speed change gears, a speed change gear based on a difference in the number of teeth of a gear rotating body has an advantage of reliably transmitting power, and is therefore put into practical use as a gear speed changer.
A practical gear transmission is a means for transmitting rotational force from power to drive it, and it can be used regardless of the size of equipment such as a transportation vehicle or precision equipment, so it is practically used as a mechanical transmission mechanism. Was enough.

However, when the transmission is used for a transmission in which the input speed and the output speed change rapidly and frequently, the power and the transmission are separated and the gears are switched for each shift, and the speed of the power also changes each time. Since it is necessary to tune in consideration of the rotational speed output from each transmission, the number of devices and parts required for the transmission increases and the weight increases, and smooth shifting does not result in smooth shifting. There were drawbacks such as.

In a transmission such as a general automobile, this drawback results in a heavy vehicle body due to its structure, which is a major obstacle to fuel efficiency and operability. Specifically, the heavy vehicle body requires more engine displacement than necessary, which reduces fuel efficiency, requires skill to operate the clutch, and causes a problem of unstable running for rapid gear shifting. .

As a countermeasure for this, there is a method of utilizing the fluidity of oil. However, even with this method, if the rotation speed changes significantly, slippage occurs, so it is necessary to enlarge the device and expand the area that receives fluid friction. Further, although there is a method of utilizing centrifugal force, it is difficult to surely transmit the rotation and the force of the power to drive the operation.

[0006]

The problem to be solved is that it is not possible to eliminate the shift shock which is an obstacle in a rapid shift operation.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a gear shift transmission system surrounding a biaxial conical rotor is moved in order to surely and smoothly rotate an input rotation from a power when a gear shift is rapidly transmitted. The main feature is to do.
The purpose of facilitating stepless speed change of rotation speed has been realized with a minimum number of parts and a compact structure without impairing efficiency.

[0008]

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

A pair of conical rotors 2 installed at the center of the inside of the cylinder 1 have their input and output shafts 8 with their apexes in opposite directions.
The two axes are parallel and fixed to the conical rotor, and the input and output axes are inclined so that the generatrix intersecting the extension of the center line passing between the two axes of the input and output axes and the inner surface of the cylinder are parallel. It is rotatably movable via a bearing and fixedly installed in a cylinder.

The driving blades 5 on the side surface of the conical rotary member 2 have an inverted V-shaped cross section, and the V-shaped apex is inclined to the side where both the input-side and output-side conical members mesh with each other so that the driving rod 6 can be pushed down easily during rotation. As shown in the figure, the surface has an arcuate shape, and when the drive rod slides during gear shifting, the force is applied at a right angle so that no force other than the moving force acts. It has multiple schools.

The speed change adjusting system includes an inner peripheral portion of a support wheel 4 provided so that the outer peripheral portion closely synchronizes with an inner peripheral surface of an annular rotary member 3 which surrounds the outer peripheral surfaces of a pair of conical rotors. Is provided so as to be rotatably movable through a bearing so as to be held inside, and countless drive rods 6 are individually extruded from the inside via a spring in a piston shape on the inner peripheral portion of the annular rotary member 3 and are equidistantly spaced. Is attached to. Further, the tip body portion of the drive rod is mounted in an arc shape so as to be easily meshed with the tip portion of the drive blade and driven.

The guide groove 7 is provided with a plurality of spiral guide grooves on the inner surface of the cylinder. The guide groove is provided on the outer peripheral portion of the support wheel with a protrusion that closely synchronizes with the guide groove. The speed change system is rotated by the adjustment rod.

[0013]

As described above, in the continuously variable transmission of the present invention, the distance between the side surfaces of the pair of conical rotors surrounded by the speed change control system and the inner peripheral surface of the annular rotary wheel of the speed change control system is always constant. When the speed change control system moves and the gap between the drive blades changes, the drive blades can push in the drive rods to engage with the drive rods that match the gaps. There is an advantage that there is no impact due to the elimination of steps, and an advantage that the rotation speed can be easily reversed in the input rotation and the output rotation and that the input and output rotation shafts can be operated in the reverse rotation. Further, the present invention can be applied to applications in which rapid shift operation is indispensable as a medium device when converting a braking force of a vehicle or the like into air energy and converting the braking force into stable power generation.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a method of mounting a stepless transmission.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 2 Conical rotor 3 Annular rotary transport 4 Support wheel 5 Drive blade 6 Drive rod 7 Guide groove 8 Input / output shaft 9 Adjusting rod 10 Open / close plate

Claims (4)

[Claims] 1. A transmission means for transmitting an input rotation speed by means of a diameter difference of a rotating body, wherein a rotating shaft system is constituted by a pair of conical rotating bodies installed at the center of the inside of a cylinder and an input / output shaft.
A shift adjusting system is composed of an annular rotary wheel having a drive rod attached to the inner peripheral portion thereof and a supporting wheel for supporting the rotation of the annular rotary wheel, and the annular rotary wheel surrounds the outer circumference of a pair of conical rotors and is of a supporting wheel. An outer peripheral portion is provided so as to be in close contact with the inner surface of the cylinder, and the guide groove of the inner surface of the cylinder and the adjusting rod of the supporting wheel move the speed change adjusting system to change the rotational speed. 2. The stepless transmission according to claim 1, wherein a plurality of drive blades are attached to the side surface of the cone rotating body in a straight line along a generatrix of the cone at equal intervals with respect to the outer circumference. 3. The continuously variable transmission according to claim 1, wherein the drive rod is movably mounted so as to be individually pushed and pushed in a piston shape from the inside of the annular rotary wheel toward the inner peripheral portion. 4. The continuously variable transmission according to claim 1, wherein a plurality of rows of spiral guide grooves are provided on the inner surface of the cylinder so as to be closely aligned with the outer peripheral projections of the support wheel.