JPS5822657B2 - The prefectural government's decision to - Google Patents

Description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The present invention relates to a drive shaft having a first friction cone and a first
the first friction cone or the first friction ring is axially movable in the direction of the transmission device, and a second friction ring is engaged with the first friction ring and a second friction cone is engaged with the first friction ring; and a guide means for guiding the support member in a direction approximately perpendicular to the axial direction of the transmission device, the guide means being supported on a case of the transmission device so as to be slidable in the guide direction, i.e., the direction of adjustment movement, and the first friction cone or the first friction ring is axially slidable.

In this type of known friction plate transmission device, the second friction cone and the second friction ring are supported on a common shaft so as to be axially slidable relative to a support, so that the axial positions of the second friction cone and the second friction ring can be adjusted so that their entire friction surfaces are engaged with each other.

This configuration includes the following: the axial length of the structural part formed by the second friction cone and the second friction ring is increased;
This has the disadvantage of increasing the overall length of the transmission device.

SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a friction plate type transmission device of the above-mentioned type which has a simple structure, a short overall length of the device, an increased transmission moment, and minimized wear.

This problem is solved as follows.

The second friction cone and the second friction ring are supported on a support member such that they cannot slide in their axial direction, and the support member is supported movably approximately parallel to the axis of the first friction cone or the first friction ring, thereby ensuring that the friction surfaces always come into desired contact with each other, in which case the guide means of the support member are spaced radially from the friction ring and the friction cone and can therefore be made relatively large, without increasing the additional space that would be otherwise created and without interfering with the engagement of the friction cone with the friction ring, etc.

In a particularly advantageous embodiment of the invention, guide means for the support member are provided,
In particular, guide means for the slide are provided on the inside of the case wall,
The guide means is removably fixed to the case, for example by bolts, thus ensuring easy mounting.

Additionally, the case walls may be selectively securable to opposite sides of the case, thus allowing the friction plate transmission to be tailored to its requirements.

The invention further proposes supporting the driven shaft so that it can slide axially relative to the drive shaft with an adjustment device dependent on the torque, and arranging the axis of the intermediate shaft, which is approximately parallel to a plane containing at least the axis of the drive shaft parallel to the adjustment direction, at an angle of 6 to 9° to the axis of the driven shaft.

In this way, a particularly desirable operation of the adjustable transmission device is ensured, with fine adjustment of the control device being ensured by providing a control device on the driven side of the adjustable transmission device, which simply increases the rotational diameter between the rotating members on the driven shaft side compared to the drive shaft side.

The present invention will now be described in detail with reference to the drawings showing an embodiment thereof.

As shown in Figs. 1 and 2.3, the case 1 of the transmission device is fitted with two friction cones 2, 4 and two friction rings 3,
5 is supported rotatably, the friction cones 2,
4 engages with the friction rings 3 and 5.

The first friction cone 2 and the first friction ring 5 which does not directly engage with said friction cone are supported directly on the case 1 for rotation about a common axis 6 .

The second friction ring 3 engaging with the first friction cone 2 and the second friction cone 4 engaging with the first friction ring 5 are rotatably journalled in a support member 8 about a common axis 7, the axis 7 being slightly inclined relative to the axis 6 corresponding to the cones of the friction cones and arranged in a common plane with this axis 6.

The support member 8 is formed in a plate shape and has a bearing hole 9 for receiving the intermediate shaft 10 .

The intermediate shaft 10 is provided at its two ends with a second friction ring 3 and a second friction cone 4 .

The corresponding edge 11 of the support member 8 is bent around the central axis of the bearing hole 9 .

At the end edge opposite to the end edge 11, the support member 8 has a sliding means 12 which is substantially T-shaped in the sliding direction.

The sliding means 12 slides in a guide groove 13 of a slide 14 which is formed correspondingly to its cross section.

The support member 8 together with the sliding means 12 is slidable in a groove 13 parallel to the axis 6 of the transmission device of the arrow 15 .

A second friction ring 3 is directly adjacent to one side of the support member and a second friction cone 4 is directly adjacent to the other side of the support member.

The slide 14 is journalled in a guide means 16 at right angles to the axis 6 and parallel to a plane in the direction of the arrow 17, in which both axes 6, 7 are located.

This sliding property allows the transmission ratio of the friction plate type transmission device to be changed continuously.

The guide means 16 is formed by two grooves facing each other on the open side, in which the slide 14 is slidably guided by a lateral sliding protrusion, while the end of the guide groove 13 of the slide 14 is engaged by the guide means 16 so as not to be closed.

The guide means 16 is provided on the wall 25 of the case.
5 is removably fixed to the case 1 by, for example, a bolt.

The speed control device engaged with the slide 14 is not shown.

The control device adjusts the slide 14 in the direction of the arrow 17 and fixes it.

The shaft 18 connected to the first friction cone 2 and protruding from the case 1 is provided as a drive shaft, while the first friction ring 5
A shaft 19 is connected to the case and protrudes from the case, and serves as a driven shaft.

The driven shaft 19 has two shaft portions which can slide relative to each other in the nesting hole. The shaft portion 20 protruding from the case 1 carries a sleeve portion of the shaft portion 21, and the portion 21 connected to the friction ring 5 is supported in the sleeve portion so as to be slidable parallel to the shaft 6 in the direction of the arrow 22.

The end of this portion 21 forms a cam surface 23 cut into a square shape, in which a cross pin 24 fixed to the sleeve portion of the shaft portion 20 engages.

The shaft portion 21 is supported on the shaft portion 20 so as to be axially slidable and rotatable.

The pressing device presses the entire friction surface more or less strongly in accordance with the torque, during which the second friction ring 3 and the second friction cone 4 move in the direction of the arrow 15 .

Since the support member 8 is supported so as to be movable in the direction of the arrow 15, the friction ring 3 and the friction cone 4 can also be supported immovably relative to the support member 8 in their axial direction.

In the embodiment shown in FIG. 4.5.6, the intermediate shaft 10a
The axis 7a of the friction cones 2a and 4a is approximately twice the cone angle.
That is, they are arranged at an angle of 6° to 9° to the axis 6a, but the friction cones 2a, 4a are always in a plane containing the axis common to the axis 6a so as to contact the friction rings 3a, 5a with the maximum radius of rotation.

At the edge opposite edge 11, the support member 8a has a forwardly projecting slide 12a formed as a plate integrally or attached to the support member 8a,
The slide 12a has balls 2γ on its opposite side edges.
The ball 27 further includes two grooves 28a for
It is guided in a groove 13a of a slide 14a.

The support member 8a together with the slide 12a is slidable by balls 27 in the direction of the arrow 15a a small distance parallel to the axis 6a.

The slide 14a, which is configured as an adjustment plate, engages at its open side with laterally projecting rolls 29 in mutually opposing parallel grooves 16a which are rectangular or approximately square in cross section.

In this case, a single roll 2 is attached to each side of the slide 14a.
9, in which the roll 29 is connected to the slide 1 arranged one behind the other in the direction of the control movement direction arrow 17a.
4a, are parallel to axis 6a and are equidistant from an axis which intersects axis 7a at the centre between the friction surfaces of rotating members 3a, 4a.

The rolls 29 are respectively provided on the sides of the slide 14a, which slide is further arranged away from the side portion of the support member 8a, so as to press the rotating members 2a to 5a against the support member 8a and thus the slide 14a via the ball guide.
The rotational moment acting on the shaft 4a presses the roll 29 against the bottom surface of the guide groove 16a without any gap, around an axis perpendicular to the common axial plane of the shafts 6a and 7a.

The cylindrical roll 29 has a thickness that corresponds approximately to the width of the guide groove 16a.
The shaft is prevented from moving perpendicular to the axial plane of the shaft.

The adjustable transmission device has an adjustment device 30 for pressing the rotary members 2a to 5a against one another according to the torque, which adjustment device engages with the driven shaft.

The driven shaft 19a is formed by two shaft portions 20a, 21a which can slide relative to each other in a rotating manner. Of these, the shaft portion 20a protruding from the case of the transmission device is formed as a shaft portion having a sleeve portion, and within this sleeve portion, the shaft portion 21a connected to the friction ring 5a is supported so as to be slidable parallel to the shaft 6a in the direction of the arrow 22a.

The end face side end of this inner shaft portion 21a is provided with a V-shaped cam surface 23a to form an inclined cam, and a cross pin 24a, which is fixed at both ends adjacent to the bottom wall of the sleeve portion of the shaft portion 20a, engages in this cam surface 23a.

The outer shaft portion 20a has a protruding shaft 31 on the outside of the end wall of the sleeve portion.

When a reverse moment is applied to the protruding shaft 31, the shaft portion 20
a and 21a are rotated relative to each other about the axis 6a, so that the pin 24a causes the shaft portion 21a and thus the friction ring 5a
is pressed against the friction cone 4a.

In this case, the second friction ring 3a is pressed against the friction cone 2a by sliding the support member 8a in the direction of the arrow 15a.

A sleeve portion of the outer shaft portion 20a is supported directly on the case 1a by a bearing 32 for supporting the driven shaft 19a.

It is also an essential part of the present invention that the adjustment device 30 is located substantially inside the driven shaft.

The shaft 10a is supported by a ball bearing, and an adjustment device 30 that acts in the axial direction
By providing the drive shaft on the inside, the length of the entire device can be made as short as possible even if the structure is simplified and the transmission moment is increased.

By inclining the intermediate shaft at an angle of 6° to 9° into the support member 8a, a larger rotation diameter can be created for the conical IJ song on the driven shaft side, which increases capacity and wear resistance.

The sliding members providing the control sliding motion and the axially parallel sliding motion are supported on balls or rollers for ease of installation and removal.

[Brief description of the drawings]

Fig. 1 is a partial vertical sectional view of a friction ring type transmission device according to the present invention, Fig. 2 is a right side view of a support member of the transmission device shown in Fig. 1, Fig. 3 is a right plan view of Fig. 2, and Figs. 4 to 6 show another embodiment of the present invention shown corresponding to the embodiment of Figs. 1 to 3. 3.3a...second friction ring, 4, 4a...
.... second friction cone, 8, 8a.... support member, 12° 13.12a, 13a, 27.28a...
...guiding means, 15.15a...axial direction of the transmission device, 2,2a...first friction cone, 1
, 1a... case, 5°5a... first
Friction ring, 18.18a....drive shaft, 19
, 19a... Driven shaft, 10.10a...
Intermediate shaft, 7, 7a.... Shaft of intermediate shaft, 6, 6a
....Drive shaft and driving shaft.

Claims (1)

[Claims] 1. In an adjustable friction plate transmission, the transmission comprises a drive shaft having a first friction cone, a driven shaft having a first friction ring, an intermediate shaft which is movable in the axial direction of the transmission and is supported on a support member between the drive shaft and the driven shaft, and which is movable in the axial direction of the transmission and has a second friction ring engaged with the first friction cone and a second friction cone engaged with the first friction ring, and a guide means for guiding the support member in a direction approximately perpendicular to the axial direction of the transmission, the guide means being supported on a case of the transmission so as to be slidable in the guiding direction, i.e., the adjustment movement direction, and the first friction cone or the first friction ring is slidable in the axial direction. In this case, the intermediate shaft 10.10a having the second friction cone 4,4a and the second friction ring 3,3a is supported so as not to slide in the axial direction relative to the support members 8,8a, and the support members 8,8a are supported by the guide means 1212a,13,13a in the axial direction of the transmission.
5°15a It is supported movably and the intermediate shaft 1
0°10a shafts 7, 7a are driven and driving shafts 6, 6a
A transmission device characterized in that it is inclined at an angle of 6 to 9 degrees relative to the