JP2012127488A - Push rotary type continuously variable transmission mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To push and turn flexible bodies by revolving power rollers changing the inner diameter of each flexible body, and to enable continuously variable transmission driving by the existing frictional power transmission means by changing the continuous reciprocating driving of the flexible bodies and the distance thereof.SOLUTION: The insides of the flexible bodies 1a, b, c supported by rotors 3a, b, c turning around the periphery of a center shaft supported by a peripheral frame 5 through rotary input and supporting the peripheral frame 5 are pushed and turned by revolution of the power rollers 2a, b, c moving between the center shaft and the peripheral frame 5. With this configuration, the continuous reciprocating driving and driving width of the flexible bodies 1a, b, c are changed, and input of the peripheral frame 5 or revolution input of the power rollers 2a, b, c which is applied to the continuously variable driving is allowed.

Description

  The present invention relates to a continuously variable transmission mechanism between power transmissions.

As a power transmission means in the continuously variable transmission mechanism, a belt type CVT and a toroidal type CVT are basically used in practice.
The speed change effect of a practical belt type CVT is great, but the belt friction is forcibly moved by forcibly changing the pulley diameter between input and output, and the transmission means of the toroidal type CVT is input and output of rotation by the force tilt means of the power roller shaft in contact with the output. Because it is a forced movement of the friction part, both of them are unable to drive and transmit without stepless transmission with a reliable meshing between gears and sprockets between transmission drives, so it is not possible to rely on frictional power transmission means It has been done with excessive friction.

  However, it is intended to provide a push rotary type continuously variable transmission mechanism by a simple configuration means for performing a free continuous speed change by a method different from both friction type power transmission means.

  The problem to be solved is that in the conventional continuously variable transmission mechanism, the frictional power transmission means with the member existing between the input and output, which transmits power with friction, cannot be escaped.

  In the present invention, in order to avoid frictional power transmission means, a flexible body and a power roller are provided, and the flexible body is pulled by means of pushing around the inside of the expansion body in a form of revolving the power roller as in a planetary gear configuration. The main feature is to change to a continuous reciprocating motion, and to change the diameter of the flexible body by pushing the flexible body with the power roller moving means between the center axis of the power roller and the outer peripheral frame region, and to apply the variable speed drive.

  The push rotary type continuously variable transmission mechanism of the present invention is partly similar to a planetary gear drive configuration, and includes an axial center rotation input of the outer peripheral frame, an axial center revolution input of the power roller, and a rotating body supporting the outer peripheral frame. There is an advantage that various input / output conditions can be selected depending on the purpose of use, such as a roller supporting the central shaft as an output side.

  The flexible body is a member that does not bend and expand freely, such as a wire and chain, and the rotating body is a roller that avoids friction due to the reciprocating motion of the flexible body, but it is flexible by incorporating an amplification member such as a sprocket parent and child gear. Drive the body and drive the ring gear and sun gear as the final output side, and the center shaft support roller is also for avoiding friction, but it is also driven as the final output side sun gear as a member such as a sprocket, Alternatively, the continuously variable transmission mechanism, such as driving of a final output amplifying member in which flexible bodies are gathered outside the outer peripheral frame, can be a transmission according to the purpose of use.

  It is explanatory drawing which showed the implementation method of a push rotary type continuously variable transmission mechanism. Example 1   It is explanatory drawing which showed the drive state of the push rotary type continuously variable transmission mechanism. (Example 2)

  The movable position of the power roller that pushes and rotates the flexible body can realize a wide range of shifting effects by moving from a position as close to the outer peripheral frame as possible to a position close to the central shaft portion.

  As shown in FIG. 1, the flexible body that is rotated by the power roller is rotated from the power roller to one revolution or the outer peripheral frame, and the extended action range pushed out by the power roller is from 0 degrees to around 140 degrees. Since the reciprocating motion is performed in a cycle in which the extended stop range is from about 140 degrees to about 220 degrees and the return range is from about 220 degrees to 380 degrees, the purpose of continuous variable speed drive with one input rotation is A continuously variable transmission mechanism is realized with a minimum number of parts in a configuration in which three support shafts and a rotating body are provided on the outer peripheral frame at positions of 120 degrees each.

  FIG. 1 is a diagram of an embodiment of the apparatus of the present invention, wherein 1a, b, c are flexible bodies, 2a, b, c are power rollers, 3a, b, c are rotating bodies, 4a, b, c. Are rollers, 5 is an outer peripheral frame, 6 is a support shaft, and 7 is a support plate.

  The central axis supports 4a, b, c rollers and 7 support plates, 6 support shafts move in the direction of the arrow with 7 support plates, and 2a, b, c power rollers for each support shaft. The flexible body of 1a is contact-supported on the outer periphery of the roller of 4a from the shaft supported by the outer peripheral frame of 5, and the power roller of 2a is arranged on the inside to support contact with the rotating body of 3a. The flexible body of 1b is The shaft supported by the outer peripheral frame 5 is contact-supported on the outer periphery of the roller 4b, and the power roller 2b is arranged on the inner side to support the rotating body 3b. The flexible body 1c is supported by the shaft supported by the outer peripheral frame 5. 4c roller outer periphery is contact-supported, 2c power roller is arranged on the inside, 3c rotating body is contact-supported, each flexible body 1a, b, c is always pressured in the direction of the arrow.

  Also, with the support plate chassis fixed at 7, the arrow of the outer peripheral frame of 5 or the reverse direction rotation input, or the support plate center axis center arrow of 7 fixed at the outer periphery frame chassis of 5 or the reverse direction rotation input, The operation in which the flexible bodies 1a, b, and c are simultaneously pushed and rotated by the power rollers 2a, b, and c is the same.

  In FIG. 1, each of the flexible bodies 1 a, b, and c is overlapped with the lines indicating the flexible bodies in the figure for convenience of explanation, and therefore, the rollers 4 a, b, and c and the power rollers 2 a, b, and c are Although illustrated separately, in practice, each 4a, b, c roller, each 2a, b, c power roller, each 3a, b, c rotating body, each flexible body 1a. , B, and c are arranged in a three-layer structure to avoid interference between members.

  The support shaft supporting each flexible body supported by the outer peripheral frame in the figure, and the mounting position of each rotary body can be supported in the opposite direction depending on the purpose of use. The maximum reciprocating drive distance of the flexible body becomes smaller as the distances between the attachments become larger, and the drive distance for pulling one flexible body by one rotation of input by each input means is 140 degrees from the position of the power roller revolution 0 degree. The distance between the revolved position and the power roller in a straight line, and the continuous drive distance pulled by three flexible bodies by one rotation of the input is the power of the position revolved 120 degrees from the position of 0 degrees power roller revolution. 3 times the distance between the rollers with a straight line.

  The embodiment of FIG. 2 drives the action of pushing out the flexible body of the 1a of the 2a power roller in each rotation range for the convenience of explanation with respect to the input of one rotation in the direction of the arrow of the outer peripheral frame when the support plate chassis is fixed to 7. FIG. 4 is a diagram of each driving state in which 2 is the front, 3 is the expansion area, 4 is the expansion stop area, and 5 is the return area.

  The shape, size, etc. of each member is a diagram for convenience of explanation. When the rotator or roller is set as the final output, each of the three rotators, the one-way mechanism member to each of the four rollers, etc. Bearings and the like are omitted, and the power roller can be moved in the direction of the support shaft arrow by lever, gear, hydraulic pressure or the like.

  The present invention has a drive structure that avoids the conventional frictional power transmission means, and is a continuously variable transmission mechanism with simple structure means for performing a variable speed drive, and can be applied to a new application different from other CVT incorporation. .

DESCRIPTION OF SYMBOLS 1a, b, c Flexible body 2a, b, c Power roller 3a, b, c Rotating body 4a, b, c Roller 5 Outer frame 6 Support shaft 7 The shape, size, etc. of each member of the support plate so

Claims (1)

  A configuration in which the inner periphery of a flexible body supported by a rotating body supported by the outer peripheral frame is pushed by rotation of a power roller that is movable between the central axis and the outer peripheral frame through a rotation input and around the outer periphery of the central axis supported by the outer peripheral frame. A push rotary type continuously variable transmission mechanism characterized by permitting an outer peripheral frame input or a power roller revolution input to be applied to a continuously variable speed drive by changing a flexible body continuous reciprocating drive and a driving width.

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