JPS58200822A - Torsion vibration damping device - Google Patents

Abstract

PURPOSE:To lengthen the travel of compression springs and to absorb an excessive input effectively by inserting floating pieces for balancing the springs between multiple compression springs housed in window holes of a hub in the lock- up clutch of an automatic speed changer. CONSTITUTION:When the rotating drive power of an engine is transmitted to a drive member 1, said device transmits the rotating power from drive plates 2, 3 fastened to each other with rivets to a hub 6 through compression springs 8-10 housed in window holes 4, 5 of plates 2, 3 and a window hole 6a provided on the plate 6b of a hub 6. In this case, the compression springs 8-10 are arranged in series through floating pieces 11 with a lug 11b at one end supported slidably on a linear ring 12 arranged along the spring passage of the hub 6. Accordingly, the travel of the springs 8-10 can be lengthened when the compression springs 8-10 are twisted in response to the twist angle of the drive plates 2, 3, and also the shock absorbing capability can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a torsional vibration damping device applied to a clutch of an automobile manual transmission or a lock-up clutch of an automatic transmission using a torque converter.

Torsional vibrations generated from an automobile engine cause undesirable vibrations or noise in a power transmission system. For this reason, it is well known that a torsional vibration damping device using a compression spring acting in an arc shape is applied to the clutch. One of the current problems with such bending vibration damping devices is that the device has a relatively small deflection range (amplitude).
That's just something that can't be tolerated.

For this purpose, a pair of counterbalancing devices are disposed facing each other on both sides of a hub having a plurality of outwardly projecting hub arms, and the radially outwardly directed arms of these counterbalancing devices are arranged between adjacent hub arms of the hub. and a compression spring is arranged between these arms and the hub arm, and the compression spring is configured as a group of springs that act in series between adjacent hub arms of the hub, and the drive plate engages with the compression spring. It has been proposed to increase the relative rotation angle of .

However, in such a torsional vibration damping device IT, two large-diameter balancing devices are provided on both sides of the hub, which increases the weight and complexity and causes an increase in cost.

Also, these balancing devices! - There was a problem in that the width of the hysteresis characteristic of the torsional torque was increased due to the sliding resistance due to the free sliding contact with the plate and boss of the screw.

The present invention has been made by focusing on such conventional problems, and its purpose is to eliminate the conventional large-diameter balancing device, reduce iii, and reduce the sliding resistance against the hub with a long travel spring. The purpose of the present invention is to provide a torsional vibration damping device which is designed to reduce vibrations, and its gist is to provide a torsional vibration damping device which has a structure in which: a plurality of compression springs are interposed in a window hole, and a roller for spring balance is interposed between the springs; , these idlers are connected so as not to be movable in the radial direction by a linear ring disposed along the threaded path of the hub.

Below, the implementation fee of the present invention will be specifically explained with reference to the drawings.

Figures 1 and 2 show a feed according to the present invention, where I is a drive member into which the driving force of the engine is input, and two drive plates 2 and 3 are riveted to the side of this member. At three locations facing each other on the drive plates 2.degree.3, there are provided grooves 95 that engage with a plurality of compression springs arranged in series, as will be described later. Reference numeral 6 denotes a hub interposed between the drive plates 2.3, and this hub 6 is composed of a post 6a and a plate 6b, and its grate 6b
At equal intervals in the circumferential direction, with the same length as the circumferential direction length of the corresponding groove 4.5 of the drive plate 2゜3,
Three long fan-shaped window holes 1 are formed.

Inside each of these window holes 1 is an insert, a type of compression spring 8°9#.
Three pieces of 10 are interposed. Furthermore, a swinger 11 is interposed between these compression springs #, 9, and 10 so as to be held therebetween. This floating element 11 is shown in FIG. 3(a).
, As shown in (b), the circumferential surface of a round bar body 11 a whose both ends of a substantially cylindrical synthetic resin or metal material are obliquely cut off in a substantially symmetrical manner.
A protrusion 11 m) such as a metal member is provided on the side of the round bar body 11 a, and the protrusion f
A ring receiving hole 11a is provided for inserting a linear ring to be inserted into the ib. And these children 11
. . . 11 connects the protrusion 111) with compression springs #, #
, 1ff inside than the circumferential surface of 10! With IIK protruding and both inclined end surfaces in contact with the end surfaces of compression springs II, 9, and 10, these compression springs 1! , 9
, 20. I2 is a linear ring arranged along the spring path of the hub 6, and the linear ring/g1
2 is inserted into the ring receiving hole 110 provided in the protrusion 11t) of the above-mentioned idler 11.
. . 11 are connected movably in the rotational direction (one circumferential direction) and immovably in the radial direction, and these idlers 11 . . .
11 is the drive plate 2. While preventing sliding contact with the inner surfaces of @a and S of II, the sliders 11...11 to compression springs #, #, and 10 are made to move smoothly in the rotational direction.

In the torsional vibration damping device having such a structure, the driving rotational force of the engine is transmitted to the driving member, and this rotational force is further transmitted to the drive plates 2, 3 and the compression springs 8, 9, 1.
0 to the hub 6, and further transmitted to the wheels etc. via the output shaft fitted into the spline 6C of the hub 6.

At this time, each compression spring #, 9, 10 is bent according to the twist angle of the drive plate 2°3 with respect to the hub 6,
As described above, since the plurality of compression springs 8, 9, and 10 are arranged in series via the spring balance roller 11, the torsional action causes a long travel movement, causing an excessive impact on the drive plate 2.3. Even when human power is applied, each compression spring 8, 9, 10 can absorb the human power with sufficient margin. Then, due to the rotation of the roller, the idler 11...1] is affected by the centrifugal force and compression spring load component force
...11 is restricted from moving in the radial direction by the linear ring U, so it moves p@wivIjh without being pressed against the inner surface of @i, 5, and the floating element 11...1
The frictional resistance between 1 and the inner surface of the window (, 5 can be made zero.The linear ring L is the roller 1)...!!In order to smoothly move in the rotational direction, the peripheral surface The paper is coated with lubricating oil or coated with Teflon resin, which has excellent self-warming properties.

Figures 4 and 5 show another embodiment of the present invention.
By inserting the floater 1 in the above embodiment,
The protrusion 11b of No. 1 is made dull, and the pond portion is exactly the same as in the case of the above-mentioned example m.

As explained above, according to the present invention, a spring balancing floater is interposed between a plurality of vertical rows of compression springs interposed in a window hole of a hub, and these floaters are arranged in a spring path. Since they are connected so as not to be movable in the radial direction by a linear ring placed along the line, the following effects can be obtained.

(1) It becomes possible to achieve a long travel of the compression spring and to sufficiently absorb excessive human force.

(2) It is possible to prevent sliding contact between the floater and the inner surface of the window, and eliminate the generation of frictional force caused by the sliding contact when the damper is operated.

[Brief explanation of drawings]

@Figure 1 is a drawing showing an embodiment of the torsional vibration damping device of the present invention, and the second IE front view with a portion of the drive plate removed.
The figures are a sectional view along the I-line in Figure 1, and a cross-sectional view along the I-line in Figure 3 (AI
, 1B+ is a front view and a side view showing one embodiment of the rotor, FIG. 4 is a view similar to FIG. 1 showing another example of the torsional vibration damping device of the present invention, and FIG. It is a sectional view taken along the line ■-■ in the figure. 1... Drive member, 2, 3... Drive plate, 4
゜5...Window, 6...Hub, IIa...Boss, 61
3...Plate, r...Window hole, g, J, 10...
Compression spring, 11... Idle element, 12... Linear ring. Figure 2 Figure 3A Figure 3B Figure 5

Claims (1)

[Claims] A hub having a plurality of window holes provided in a plate at equal intervals in the circumferential direction, a driving member disposed on one side of the hub, a plurality of compression springs arranged in tandem in each of the window holes, and a plurality of compression springs arranged in a row in each of the window holes; a drive plate that is fixed and has a groove that has the same length in the circumferential direction as the corresponding window hole of the hub and engages with a compression spring in each of the window holes, and is interposed between the plurality of compression springs. A torsional vibration damping device comprising a roller and a linear ring connecting the rollers so that they are movable in the circumferential direction but not in the radial direction.