JPS585152Y2 - transmission - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transmission using rollers, and more particularly to a transmission that applies different 2-) *M+ forces from the same drive shaft.

・Conventionally, there is a rotation mechanism using planetary rollers in Japanese Patent Publication No. 49-41681, and a transmission that obtains a variable speed output by press-contacting a brake shoe whose friction force can be adjusted from the outside to a support frame of a planetary member. are described in Japanese Utility Model Publication No. 43-14257, but all of them are configured to obtain one rotational output from the same drive shaft, so if you want to obtain two different speed change outputs at the same time, The drawback was that two transmissions had to be prepared.

It is an object of the present invention to provide a transmission that can eliminate these conventional drawbacks and obtain two different speed change outputs from the same drive shaft.

The present invention will be described below based on an embodiment shown in the drawings. A plurality of truncated cone-shaped rollers 3 circumferentially contact a surface (tapered surface) of a disk 20 fixed to a drive shaft 1.
The roller shafts 4 are each rotatably supported by roller shafts 4 disposed parallel to the surface and radially with respect to the drive shaft 1, and the roller shafts 4 are fixed to a roller frame 5 that is rotatable around an axis coaxial with the drive shaft 1. A disk 6 is provided at a position opposite to the disk 2 with respect to the roller shaft 4, and has a tapered surface that contacts the roller 3 and is rotatable around the drive shaft 1. A sprocket T for variable speed rotation output is coaxially fixed thereon, and a brake shoe 8 whose frictional force can be adjusted by an external handle 9 is pressed into contact with the roller frame 5.

Note that similar mechanisms are provided on the other side of the disk 2, but components corresponding to those described above are denoted by the same reference numerals and a ``' is added for distinction. (same).

In the figure, 10 is a radial bearing of the drive shaft 1, 11 is a bearing of the disc 6 for the drive shaft 1, 1.2 is a disc spring □ for pressing the disc 6 against the disc 2 side, and 13 is a concave spring 12. Thrust bearing to support, 14 is the output shaft, 15 is the same output shaft 14 The above sprocket is fixedly installed in the furnace) 70 rotational force is transferred to the check 71
1T is a bearing, 18 is an operating shaft that rotates in conjunction with the handle 9, and 19.20 is a link for operating the brake shoe 8.

In this invention, the disk 2 also rotates by driving the drive shaft 1 with another prime mover, and the disk 6 receives a transmitted force via the rollers 3, but the roller shaft 4 is fixed to the roller frame 5. Therefore, by adjusting the rotation of the roller frame 5 with the brake shoes 8, the rotation speed of the disc 60 changes, and the speed change output is transmitted to the output shaft 14.

By the way, the number of rotations of the drive shaft 1 is N, and the number of rotations of the roller frame 5 is N.
1. If the rotation speed of sprocket I is N2, then N2=No
−2Nt, and when the roller frame 5 is fixed by the brake shoe 8, N1=0 and the maximum rotation speed N2=
If NO is obtained and the frictional force is decreased, the value of Nf) will gradually decrease, and Nx = -zN.

In this case, N2=O.

In addition, as shown in the drawing, roller mechanisms are provided symmetrically on both sides of the disk 20, and the friction force of the roller frames 5, 5' can be adjusted independently by handles 9, 9', so that the output shaft 1
4. It is possible to obtain different shift outputs for each of 14'.

As described above, according to the present invention, since two roller mechanisms and friction adjustment mechanisms are provided on the same drive shaft and disk, two different speed change outputs can be obtained, and one
Since the roller mechanisms are arranged on both sides of the two disks, the force in the thrust direction due to pressure of the rollers against the drive shaft is canceled out, resulting in effects such as no excessive force being applied to the thrust bearing.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway side view showing a frictional force adjusting mechanism. 1... Drive shaft, 2... Disk, 3.
...Roller 4...Roller axis, 5...
Roller frame, 6... Disk, I... Sprocket, 8... Brake shoe, 9... Handle, 14... Output shaft.

Claims (1)

[Scope of utility model registration request] A plurality of rollers 3, 3' that are in contact with both surfaces of a disk 20 fixedly attached to the drive shaft 1 are connected to roller shafts 4, 4' that are arranged parallel to the surface of the disk 2 and radially with respect to the drive shaft 1.
Each of the roller shafts 4 and 4'
The roller frame 5 is rotatable around an axis coaxial with our shaft 1.
, 5" respectively:kL, and the roller shafts 4, 4'
In the position opposite to disk 2, there is a roller, 3'・K.
A circular plate 6 that can rotate freely around 1.
．． A sprocket door, 7' for outputting % speed rotation is fixed coaxially to this disc 6, and this sprocket, 7, 7. From 'Che716
, 16' to the independent output shafts 14, 14', and the roller frames 5, 5' are provided with brake shoes 8., 16' whose frictional force can be adjusted from the outside. ;8'
A transmission characterized by a configuration in which the two are pressed together.