JPS5822657B2 - I can't wait to see what's going on. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a drive shaft having a first friction cone;
a driven shaft having a friction ring, movable in the axial direction of the device and further bearing on a support member between the drive shaft and the driven shaft, and movable in the axial direction of the transmission device and further mounted on a first friction cone; an intermediate shaft having an engaging second friction ring and a second friction cone engaging the first friction ring; and a guide for guiding the support member in a direction substantially perpendicular to the axial direction of the transmission device. means, the guide means being slidably supported in the case of the transmission device in the guiding direction, i.e. in the direction of the adjustment movement, and the first friction cone or the first friction ring being slidable in the axial direction. The present invention relates to an adjustable friction plate type transmission device.

In known friction plate transmissions of this type, the second friction cone and the second friction ring are supported on a common shaft so as to be slidable in the axial direction of the support. As a result, the axial positions of the second friction cone and the second friction ring can be adjusted so that all of their friction surfaces engage with each other.

This configuration includes increasing the axial length of the structural part formed by the second friction cone and the second friction ring;
Therefore, there is a disadvantage that the length of the entire transmission device is increased.

SUMMARY OF THE INVENTION An object of the present invention is to construct a friction plate type transmission device of the above-mentioned type, which has a simple structure, has a short overall length, increases the transmitted moment, and reduces wear as much as possible.

This problem is solved as follows.

The second friction cone and the second friction ring are supported on the support member so as not to be able to slide in the axial direction thereof, and the support member is relative to the axis of the first friction cone or the first friction ring. movably supported substantially parallel, thus ensuring that the friction surfaces are always in the desired contact with each other, in which case guiding means of the support member are provided radially spaced from the friction ring and the friction cone. It can therefore be made relatively large, without increasing the additional space created by this and without interfering with the engagement of the friction cone and the friction ring.

In a particularly advantageous embodiment of the invention, guiding means for the support member;
In particular, guide means for the slides are provided inside the walls of the case,
The guide means are removably fixed to the case, for example by bolts, thus ensuring easy installation.

Furthermore, it is also possible that the walls of the housing can be selectively fastened to opposite sides of the housing, so that the friction plate transmission is adapted to the requirements thereof.

Furthermore, the driven shaft is supported slidably in the axial direction relative to the drive shaft with an adjustment device that depends on rotational moment, and an intermediate position parallel to the adjustment direction and substantially parallel to at least a plane containing the axis of the drive shaft. According to the invention, it is proposed to arrange the axis of the shaft at an angle of 6 to 9 degrees with respect to the axis of the driven shaft.

In this way, a particularly desirable operation of the adjustable transmission device is ensured, with the adjustable transmission device simply increasing the rotational diameter between the rotating parts on the driven shaft side relative to the drive shaft side. By providing the control device on the driven side, a fine adjustment of the control device is ensured.

Next, the present invention will be explained in detail with reference to the drawings showing one embodiment.

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

The first friction cone 2 and the first friction ring 5 which does not engage directly with this friction cone are rotatably supported directly on the housing 1 about a common axis 6 .

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

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

A second friction ring 3 and a second friction cone 4 are provided at both ends of the intermediate shaft 10.

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

On the edge opposite to this edge 11, the support member 8 has a sliding means 12 which is approximately T-shaped in the direction of its sliding force.

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

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

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

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

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

The guide means 16 is formed by two grooves facing each other on the open side, in which the slide 14 is slidably guided with transverse sliding projections, and on the other hand the end of the guide groove 13 of the slide 14 is guided by the guide means. 16 so as not to be closed.

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

The rotational speed control device that engages the slide 14 is not shown.

The slide 14 is adjusted and fixed in the direction of the arrow 17 by this control device.

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

The driven shaft 19 has two shaft parts that are slidable relative to each other in the nesting hole, of which the shaft part 20 protruding from the case 1 carries a sleeve part of the shaft part 21, and the sleeve part is connected to the friction ring 5. A portion 21 is supported slidably parallel to the axis 6 in the direction of the arrow 22.

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

The shaft portion 21 is axially slidably and rotatably supported on the shaft portion 20.

The pressing device presses the entire friction surface to a greater or lesser degree depending on the rotational moment, with the second friction ring 3 and the second friction cone 4 moving in the direction of the arrow 15.

Since the support element 8 is supported movably 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 element 8 in its axial direction.

In the embodiment shown in FIG. 4.5.6, the intermediate shaft 10a
The axis 7a of is approximately twice the cone angle of the friction cones 2a and 4a,
That is, although it is arranged at an angle of 6° to 9° with respect to the axis 6a, the friction cone 2a4a is in common with the axis 6a so that it is always in contact with the friction rings 3a, 5a with the maximum radius of rotation. lies in the plane containing the axis.

At the edge opposite the edge 11, the support element 8a has a forwardly projecting slide 12a, which is formed integrally with the support element 8a or is formed as a plate attached thereto;
This slide 12a has a ball 2γ on its opposite side edge.
The ball 27 is further provided with two grooves 28a for
It is guided by the groove 13a of the slide 14a.

The support member 8a can be slid along with the slide 12a by the ball 27 over a small distance in the direction of the arrow 15a parallel to the axis 6a.

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

In this case, each side of the slide 14a has a single roll 2
9 is provided, in which case the roll 29 has slides 1 arranged one behind the other in the direction of the controlled movement direction arrow 17a.
4a, parallel to the axis 6a, and equally spaced from the axis cutting the axis 7a at the center between the friction surfaces of the rotating members 3a, 4a.

The rolls 29 are each provided on the sides of the slides 14a, which are further spaced apart from the side parts of the support member 8a, so that they press the rotating members 2a to 5a against the support member 8a and thus prevent the guidance of the ball. Slide through 1
The rotational moment generated in 4a presses the roll 29 about an axis perpendicular to the common axial plane of the shafts 6a, 7a against the bottom surface of the guide groove 16a without any gap.

The cylindrical roll 29 has a thickness that approximately corresponds to the width of the guide groove 16a, so that the slide 14a can be attached to the roll 29.
movement perpendicular to the axial plane of is prevented.

The adjustable transmission device has an adjusting device 30 for pressing the rotary members 2a to 5a against each other according to the rotational moment, which adjusting device 30 engages with the driven shaft.

The driven shaft 19a is formed by two shaft parts 20a, 21a which are slidable relative to each other in a fixed position, of which the shaft part 20a protruding from the case of the transmission device is formed as a shaft part with a sleeve part, A shaft part 21a connected to the friction ring 5a is supported in the sleeve part so as to be slidable parallel to the shaft 6a in the direction of the arrow 22a.

The end side end of this inner shaft portion 21a is provided with a V-shaped cam surface 23a for forming an inclined cam, in which cam surface 23a is provided adjacent to the bottom wall of the sleeve portion of the shaft portion 20a. A horizontal pin 24a fixed at both ends thereof is engaged.

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

When a reverse moment is applied to this protruding shaft 31, the shaft portion 20
a, 21a are rotated relative to each other about the axis 6a, so that the shaft portion 21a is rotated by the pin 24a 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 directly supported by a bearing 32 on the case 1a for bearing the driven shaft 19a.

It is also an important part of the invention that the adjustment device 30 is provided substantially inside the driven shaft.

An adjustment device 30 that supports the shaft 10a with a ball bearing and operates in the axial direction.
By providing this inside the driven shaft, the overall length of the device can be made as short as possible even if the structure is simplified and the transmitted moment is increased.

By tilting the intermediate shaft at an angle of 6° to 9° in the support member 8a, a large rotational diameter can be created in the conical IJ song on the driven shaft side, which increases capacity and wear resistance. It turns out.

The sliding member, which provides controlled sliding movement and sliding movement parallel to the axis, is supported on balls or rollers for ease of attachment and removal.

[Brief explanation of the drawing]

FIG. 1 is a partial vertical sectional view of the friction ring type transmission device according to the present invention, FIG. 2 is a right side view of the support member of the transmission device shown in FIG. 1, and FIG. It is a right plan view, and FIGS. 4 to 6 show another embodiment according to the present invention corresponding to the embodiment shown in 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...1st
Friction ring, 18.18a... Drive shaft, 19
, 19a... Driven shaft, 10.10a...
・Intermediate shaft, 7, 7a... Axis of intermediate shaft, 6, 6a
・・・・・・Axes of driven shaft and driving shaft.

Claims (1)

[Claims] 1 a drive shaft with a first friction cone, a driven shaft with a first friction ring, movable in the axial direction of the device on a support member between the drive shaft and the driven shaft, and furthermore supported, and of the transmission device; an intermediate shaft that is axially movable and further has a second friction ring that engages the first friction cone and a second friction cone that engages the first friction ring; guiding means for guiding in a direction substantially perpendicular to the axial direction of the transmission device, the guiding means being slidably supported in the casing of the transmission device in the guiding direction, ie in the direction of the adjusting movement, and the first friction cone In an adjustable friction plate transmission, in which the body or the first friction ring is axially displaceable, an intermediate shaft 10. with a second friction cone 4, 4a and a second friction ring 3, 3a. 10a is supported so as not to slide in the axial direction with respect to the supporting members 8, 8a, and the supporting members 8, 8a are supported in the axial direction 1 of the transmission device by guide means 1212a, 13, 13a.
5゜15a Movably supported and intermediate shaft 1
The shafts 7 and 7a at 0°10a are the driven and driving shafts 6 and 6a.
A transmission device characterized in that it is inclined at 6 to 9 degrees with respect to the earth.