JPH0444911Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention consists of a conical planetary wheel that can rotate freely on its own axis, and a conical planetary wheel that supports the conical planetary wheel so that it can freely revolve around the axis of an output shaft and rotates integrally with the input shaft. a carrier to be moved; a fixed wheel body for imparting frictional resistance to the conical planetary wheel;
The present invention relates to a continuously variable transmission including a disc-shaped output rotating body interlocked with the conical planetary wheel, and a speed change operation mechanism for slidingly operating the fixed wheel body with respect to the conical planetary wheel.

[Prior Art] Such continuously variable transmission devices are generally used with the main body of the device lying on its side, that is, with its input and output shafts being horizontal. Then, the outer peripheral edge of the output rotating body is brought into contact with the oil accumulated at the bottom of the case that houses the device, and the rotation of the output rotating body scrapes up the oil and supplies it to the friction transmission unit. Cooling is in progress.

[Problem that the invention attempts to solve]

However, in the above-mentioned method, there is a limit to the amount of oil that can be scraped up, and it cannot be said that sufficient cooling is necessarily performed.

In view of these circumstances, the present invention makes it possible to scrape up a sufficient amount of oil without increasing the amount of oil stored in the case by adding a simple modification to the output rotating body. The purpose is to improve cooling capacity.

[Means for solving problems]

The characteristic configuration of the present invention, which has been made to achieve the above object, is that a flange is formed on the outer peripheral edge of the output rotating body, and the end of the flange is connected to a transmission member that is integrated with the conical planetary wheel. In addition, an inwardly annular oil reservoir is formed inside the flange, and a small hole for circulation is formed in the oil reservoir.The functions and effects thereof are as follows.

[Effect]

In other words, the outer peripheral edge of the flange of the output rotating body is immersed in the oil collected at the bottom of the case housing the device, thereby causing oil to collect in the oil reservoir.
Then, the accumulated oil is rotated or scooped up as the output rotary body rotates, and is then scattered around by centrifugal force, and some of it is transferred to the outside through the small circulation holes in the oil reservoir. It scatters and lubricates the sliding operation part of the fixed wheel body above the level of the transmission oil, or it falls under its own weight without scattering and falls on various members. Furthermore, since the output rotor is disk-shaped and the oil reservoir formed therein is annular, the output rotor rotates as described above continuously.

[Effect of idea]

Therefore, according to the present invention, by storing oil in the oil reservoir and rotating it, it is possible to scoop up more oil than before, so the cooling capacity can be increased without increasing the oil level in the case. was increasing. Moreover, the oil accumulated in the oil reservoir can be actively leaked out through the small circulation hole by the centrifugal force generated as the output rotating body rotates to lubricate various parts. This prevents the device from seizing, and since an oil reservoir can be created at the same time when forming a transmission part on a conventional output rotating body, there is no need to use a special member for scraping up the oil.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

The continuously variable transmission shown in FIG. 1 shows three conical planetary wheels 2 distributed in the circumferential direction of an input shaft 1, each connected to a conical planetary wheel bearing bracket 3 with an axis of rotation _P2.
This bracket 3 is attached to a carrier 4 which is fitted onto the input shaft 1 and driven to revolve around the axis P1 integrally with the input shaft ₁ .
It is pivotally connected around an axis _P3 perpendicular to the input shaft 1 so as to be swingable. Then, as the input shaft 1 is driven and rotated, the conical planetary wheel 2 revolves around the axis _P1 , and the centrifugal force at that time causes the bracket 3 to move toward the axis P1.
_P3 , the conical planetary wheel 2 is urged against a fixed wheel body 7 which is non-rotatably supported by the transmission case 5 via a support rod 6.
Furthermore, the conical planetary wheel 2 urged against the fixed wheel body 7 is
Due to the frictional rotational resistance provided between the fixed wheel body 7, it rotates around the axis _P2 in conjunction with the revolution rotation.

Each of the transmission members 2a is provided with a flange 8a on the outer peripheral edge of a disc-shaped output rotating body 8 that is loosely fitted concentrically to the input shaft 1, and whose edges are integrated with each of the conical planetary wheels 2. The rotation of each of the conical planetary wheels 2 is transmitted to the output rotating body 8 by friction transmission.

Further, an annular recess formed inward on the inside of the flange 8a is used as an oil reservoir 9 to scoop up oil accumulated at the bottom of the transmission case 5 and scatter it around. In addition, the oil reservoir part 9
If a plurality of small holes 9a are bored along the circumferential direction at the bottom of the oil reservoir 9, the oil accumulated in the oil reservoir 9 can be actively removed by the centrifugal force generated as the output rotating body 8 rotates. It can be leaked out and circulated more effectively. Further, the oil level in the case only needs to be at a position slightly higher than the level sufficient to submerge the oil reservoir 9, for example, at about the height of the axis of the power take-off shaft 13.

Then, the gear shift lever 11 attached to the transmission case 5 via the fixture 10 is swung around the axis _P4 , the support rod 6 is slid in the direction of the revolution axis _P1 , and the conical planetary 2 so that the rotational speed changes by moving the contact position with the fixed wheel body 7,
The speed change operation mechanism 12 is configured so that the fixed wheel body 7 can be slidably operated with respect to the conical planetary wheel 2,
Thus, the rotational input from the input shaft 1 can be changed in speed by the action of the conical planetary wheel 2 and transmitted to the output rotary body 8, and the rotational force of the output rotary body 8 can be taken out from the power extraction shaft 13. The continuously variable transmission is constructed so that the gears can be changed continuously by swinging the shift lever 11.

Note that although numbers are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional side view showing an embodiment of the continuously variable transmission according to the present invention. DESCRIPTION OF SYMBOLS 1... Input shaft, 2... Conical planetary wheel, 2a... Transmission member, 4... Carrier, 7... Fixed wheel body, 8...
...Rotating body for output, 8a...Flange, 9...Oil reservoir, 9a...Small hole for circulation.

Claims (1)

[Scope of claim for utility model registration] A rotatable conical planetary wheel 2 and this conical planetary wheel 2
a carrier 4 that supports the input shaft 1 so as to be able to revolve around the axis of the input shaft 1 and rotates integrally with the input shaft 1; and a fixed wheel body 7 that provides frictional resistance to the conical planetary wheel 2.
and a disc-shaped output rotating body 8 interlocked with the conical planetary wheel 2, and a speed change operation mechanism 12 for slidingly operating the fixed wheel body 7 with respect to the conical planetary wheel 2. It is a step-change transmission, and a flange 8a is provided on the outer peripheral edge of the output rotating body 8.
The ends thereof serve as transmission parts for the transmission member 2a integrated with the conical planetary wheel 2, and an inwardly annular oil reservoir 9 is formed inside the flange 8a. Small circulation hole 9 in reservoir 9
A continuously variable transmission device formed by a.