JPH02266146A - Continuously variable transmission - Google Patents

Abstract

PURPOSE:To enable a start from zero rotation and a speed change of up to infinity by driving an input shaft, rocking each rocking body clockwise or counterclockwise alternately via an interlocking means, and rotating an output shaft by a one-way clutch only at time of normal rotation of a rotor. CONSTITUTION:When an input shaft 7 is driven, each rocking body 4 rocks clockwise or counterclockwise alternately via an interlocking means 6, and a link 11 advances or retreats. At time of its forward movement, a rotor 3 rotates clockwise and at time of its backward movement, it rotates counterclockwise, therefore an output shaft 1 rotates via a one-way clutch 2 only at time of normal rotation of the rotor 3. In addition, a movable body 18 capable of shifting and adjusting has a rotary plate 19 centrally supported at both ends of a fulcrum shaft 5, and when a tilting body 21 is shifted upward as rotating the rotary plate 19, a mid fold of the link 11 grows larger in proportion as the travel. Accordingly, when a backward stroke of the link 11 is changed, a turning angle of the rotor 3 is changed as well, and when a pin 16 supporting the movable body 18 comes onto a turning radius of the rocking body 4, rotation of the rotor 3 is brought to nothing so that the output shaft 1 is stopped.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a continuously variable transmission.

[Conventional technology]

Conventional continuously variable transmissions include friction wheel systems using disk wheels, conical wheels, spherical wheels, etc., planetary gear systems, and systems in which a cam clutch is rocked by a lever.

[Problem to be solved by the invention]

Continuously variable transmissions other than those in which a cam clutch is oscillated have a problem in that they cannot start from zero rotation and have a shifting range that extends to infinity.

Continuously variable transmissions that use a system that swings a cam clutch are capable of continuously changing speeds from zero rotation, but they cannot achieve smooth rotation and cannot continuously change speeds to infinity. there were.

[Means to solve the problem]

In order to solve the above problems, this invention has a plurality of rotating bodies installed in parallel on the output shaft via a one-way launch so as to drive the output shaft in one direction during forward rotation, and a corresponding one for each rotating body. A rocking body is provided to rotate the rocking body, and an interlocking means is provided to convert the rotational motion of the input shaft into a forward and backward motion to swing the rocking body, and the rocking body rotates the rotary body alternately in forward and reverse directions. a link that connects the rocking body and the rotary body so as to rotate; and a movable body that is adjustable in movement and that supports the connecting points of the links without interfering with the forward and backward sliding of the link. It is composed of.

[Effect]

When the input shaft is driven, each rotating body alternately rotates forward and reverse by each interlocking means, so the rotating body alternately rotates forward and reverse through the links that move forward and backward.
The output shaft is driven by the one-way land only when the rotating body rotates in the normal direction.

Also, when the moving body is moved and the forward/backward slide stroke of the link is changed, the rotation angle of the rotating body is displaced, and when the link support point of the moving body reaches the turning radius line of the rocking body, the rotating body rotates forward or backward. is lost, and the output shaft drive stops.

〔Example〕

In the figure, reference numeral 1 denotes an output shaft, and a plurality of rotating bodies 3 incorporating one-way clutches 2 are provided in parallel on the output shaft 1 so as to drive the output shaft 1 in one direction during forward rotation.

The above-mentioned clutch 2 is constructed, for example, in the Japanese Patent Publication No. 58-52. It is composed of a first link 14 and a second link 15 that are movably connected, and a pin 16 that rotatably connects the overlapping inward other ends of the first link 14 and the second link 15.

When the input shaft 7 is driven, the oscillator 4 is activated via the interlocking means 6.
The link 11 rotates forward and backward alternately, so the link 11 moves forward and backward. When the link 11 moves forward, the rotating body 3 rotates in the forward direction (clockwise in FIG. 1), and when the link 11 moves backward, The rotary body 3 rotates in the reverse direction (clockwise in FIG. 1), and the output shaft 1 is rotated via the one-way clutch 2 when the rotary body 3 rotates forward.

The interlocking means 6, links 11, and rotating bodies 3 are arranged in three rows to facilitate intermittent operation, and the rotating bodies 3 in the first row rotate the output shaft 1 from 0° to 120°. The rotary body 3 in the row rotates the output shaft 1 from 120° to 240°, and the rotary body 3 in the third row rotates the raceway surface of the inner ring and outer ring formed in the shape of a tapered roller bearing shown in Publication No. 092. Although a clutch with a large number of rotating bodies acting as sprags interposed therebetween has been adopted, other one-way clutches may also be used.

Reference numeral 4 denotes a rocking body provided corresponding to each rotating body 3.

The above-mentioned rocking body 4 is provided with a support shaft 5 parallel to the output shaft 1, as shown in FIG. 1, and a central portion between both ends is rotatably supported on the support shaft 5.

Reference numeral 6 denotes an interlocking means that converts the rotational motion of the human-powered shaft 7 driven by a motor or the like into forward and backward motion, and swings the rocking body 4 alternately in the forward and reverse directions.

As shown in FIG. 1, the interlocking means 6 includes an eccentric wheel 8 provided on an input shaft 7, an eccentric rod 9 that moves forward and backward as the eccentric wheel 8 rotates, and a tip of the eccentric rod S and a rocking body. 4 and a pin 10 connecting one end of the pin.

Reference numeral 11 denotes a link that connects the oscillating body 4 and the rotating body 3 so that the oscillating body 4 rotates the rotating body 3 alternately in forward and reverse directions.

The blade shaft 1 is rotated from 240° to 360'', and the flywheel 1 is arranged in three equal parts of 120°, and the output shaft 1 has a flywheel 1 as shown in the figure.
7, the intermittent rotation of the output shaft 1 is canceled.

18 is a movable body whose movement can be adjusted, and this movable body 18 includes:
Connection points between links are supported.

In the illustrated case, the moving body 18 includes rotary plates 19 and 19', which are rotatably supported at the center at both ends of 5 and are opposed to each other.
A shaft member 20 whose ends are supported on one peripheral edge of both rotating plates 19 and 19', a tilting body 21 whose one end side is rotatably supported by this shaft member 20, and an outer periphery of one rotating body 19. Worm gear 22 provided in the required range and rotation operation shooting 23
The rotating shaft 24 has a rotating shaft 24, and a war 1.25 is provided in the middle of the rotating shaft 24 and meshes with the worm gear 22, and the pin 16 is held at the other end of the tilting body 21.

When the tilting body 21 is moved upward in FIG. 1 while rotating the rotary plate 19, 19', the link 11 is bent in the middle, and as the amount of upward movement of the tilting body 21 increases,
The bend in the link 11 becomes even larger.

Therefore, if the forward and backward stroke of the link 11 is changed, the rotating body 3
The rotation angle of the pin 16 changes, and the pin 16 is placed on the turning radius line of the rocking body 4.
When , the rotating body 3 stops rotating forward and reverse, and the drive of the output shaft 1 stops.

26 in the figure is a case.

〔effect〕

As described above, according to the continuously variable transmission according to the present invention, the rotational motion of the input shaft is converted into forward and backward movement, the rocking body is rocked, and the transmission is transmitted to one side via the link that moves back and forth as the rocking body swings. The output shaft is rotated in one direction while reversibly rotating multiple parallel rotating bodies with built-in clutches, and the rotation angle of the rotating bodies can be changed or rotated by moving the moving body that supports the connecting points of the links. Since it is designed to stop the rotation of the body, it is possible to start from zero rotation, and an infinite speed change range can be obtained.

[Brief explanation of drawings]

The drawings do not show an embodiment of the continuously variable transmission according to the present invention, and FIG. 1 is a longitudinal sectional side view, FIG. 2 is a sectional view taken along the line XX in FIG. 1, and FIG. FIG. 4 is a sectional view taken along line XX, and FIG. 4 is a sectional view taken along line 2-2 in FIG. 1... Output shaft, 3... Rotating body, 5... Support shaft, 7... Input shaft, 9... Eccentric rod, 11 ...link, 2 ... one-sided lunch, 4 ... rocking body, 6 ... interlocking means, 8 ... eccentric wheel, 10. 16...Pin, 18...Moving object. Patent Applicant: Takashi 1) Nobufudo Agent Kama J.

Claims (1)

[Claims] (1) A plurality of rotating bodies are provided in parallel on the output shaft via one-way clutches so as to drive the output shaft in one direction during forward rotation, a rocking body is provided corresponding to each rotating body, and an input interlocking means provided to convert the rotational motion of the shaft into forward and backward motion to swing the rocking body; and the rocking body and the rotary body so that the rocking body alternately rotates forward and backward by the rocking motion of the rocking body. A continuously variable transmission comprising a link that connects the two, and a movable body that is adjustable in movement and that supports the connecting points of the links so as not to impede the forward and backward sliding of the links.